Patent Grant
12091860
The technical field generally relates to gutter assemblies, and more specifically to gutter assemblies including a gutter cover and a gutter and to methods for installing a gutter.
Rain gutters are useful to collect rainwater that runs off the roof of a house or of a building and to route collected rainwater away from the foundation to a proper drainage area in order to avoid damages to the foundation, the soffit, the windows and/or the doors, for instance. Rain gutters generally include a trough channeling the rainwater to a downpipe or downspout, the trough being affixed to a supporting structure of the house or building such as the fascia board.
Leaves and debris may accumulate within the trough of the gutter, which can prevent the rainwater from flowing through the trough. Gutter guards or gutter covers are used to protect the gutter by preventing leaves and debris from enter the trough of the gutter while still permitting rainwater to enter the trough.
Some gutters are further mounted to a surface, such as a wall and/or a roof of a building, using a plurality of mounting hooks which support the gutter. In existing systems, the hooks are usually positioned in alignment with each other along the surface and secured to the surface, and the gutter is then mounted on the mounting hooks. In addition to supporting the gutter, the mounting hooks may provide a visual appearance which may be aesthetically pleasing to some users.
According to one aspect, there is provided a gutter assembly comprising: a gutter having a gutter wall extending between a front gutter wall end and a rear gutter wall end, the gutter wall defining a gutter channel having an open top, the gutter wall further having an inner face delimiting the gutter channel and an outer face; at least one bracket member sized and shaped to conform to the outer face of the gutter wall, each bracket member including front and rear bracket connectors connectable respectively to the front and rear gutter wall ends for attaching the bracket member to the gutter to form a bracketed gutter subassembly including the gutter and the at least one bracket member; a gutter cover for covering the open top of the gutter, the gutter cover comprising front and rear cover mounting portions and a central cover portion extending between the front and rear cover mounting portions, the front cover mounting portion being engageable with at least one of the front gutter wall end and the front bracket connector, and the rear cover mounting portion being engageable with at least one of the rear gutter wall end and the rear bracket connector to attach the gutter cover to the bracketed gutter subassembly.
In at least one embodiment, the at least one bracket member includes a plurality of bracket members disposed along the gutter and spaced apart from each other in a longitudinal direction.
In at least one embodiment, the gutter wall has a first stiffness and each bracket member has a second stiffness greater than the first stiffness such that the bracketed gutter assembly is stiffer than the gutter.
In at least one embodiment, each bracket member includes a base panel extending substantially parallel to the outer face of the gutter wall and an outer rib member extending away from the base panel.
In at least one embodiment, the outer rib member extends substantially perpendicularly to the base panel.
In at least one embodiment, the gutter wall is curved.
In at least one embodiment, the gutter wall is substantially semicircular.
In at least one embodiment, the gutter wall is made from a single piece of sheet metal.
In at least one embodiment, the gutter includes a front gutter connector engageable with the at least one bracket members to connect the gutter and the bracket members together.
In at least one embodiment, the front cover mounting portion is configured for engaging both the front gutter connector of the gutter located at the front gutter wall end and the front bracket connector.
In at least one embodiment, the front connector includes a front lip extending frontwardly from the gutter wall at the front gutter wall end.
In at least one embodiment, the front lip includes a front lip segment folded at an acute angle relative to the gutter wall at the front gutter wall end, thereby forming a front lip elbow between the front lip segment and the gutter wall.
In at least one embodiment, the front lip segment extends forwardly and is folded downwardly.
In at least one embodiment, the front bracket connecting portion includes a hook member sized and shaped to receive therein the front lip elbow.
In at least one embodiment, the front bracket connecting portion further includes: a bottom segment extending frontwardly; and an upright segment extending upwardly and rearwardly from the bottom segment, the hook member extending rearwardly from the upright segment.
In at least one embodiment, the upright segment is angled relative to the bottom segment so as to extend against the front lip segment and parallel thereto when the front bracket connecting portion engages the front gutter connector.
In at least one embodiment, the front cover mounting portion includes a front receptacle sized and shaped to receive at least one of the front bracket connector and the front gutter connector therein.
In at least one embodiment, the front cover mounting portion entirely covers the front gutter connector and the front bracket connector when the front gutter connector and the front bracket connector are engaged in the front cover mounting portion.
In at least one embodiment, the front receptacle is sized and shaped to receive both the front bracket connector and the front gutter connector therein.
In at least one embodiment, the front receptacle includes a plurality of segments, at least one of the plurality of segments abutting at least one of the gutter wall, the front gutter connector and the front bracket connector to hold the front gutter connector in the front receptacle.
In at least one embodiment, the plurality of segments includes a first segment extending upwardly and slightly forwardly from a front end of the central cover portion and a second segment extending upwardly and slightly rearwardly from the first segment, the first and second segments being angled relative to each other to form an apex therebetween, the first and second segments being sized and shaped such that the apex abuts the gutter wall when the front gutter connector and the front bracket connector are received in the front receptacle.
In at least one embodiment, the front receptacle further includes a face panel extending forwardly and downwardly and curving back rearwardly and downwardly, and an end segment extending upwardly and rearwardly from the curved portion, the end segment abutting the front bracket connector when the front bracket connector is received in the front receptacle.
In at least one embodiment, the front bracket connector is shaped to conform to the front cover mounting portion and extends along an exterior of the front cover mounting portion.
In at least one embodiment, the front bracket connector terminates in a hook member which engages the front cover mounting portion.
In at least one embodiment, the front cover mounting portion has a front mounting portion end which is spaced from the gutter wall.
In at least one embodiment, the rear cover mounting portion is configured for engaging both a rear gutter connector of the gutter located at the rear gutter wall end and the rear bracket connector.
In at least one embodiment, the rear bracket connector includes a vertical wall portion and a forwardly-extending protrusion defined in the vertical wall portion.
In at least one embodiment, the rear cover mounting portion includes a bracket engaging portion which has an inverted U-shape for straddling the vertical wall portion.
In at least one embodiment, the bracket engaging portion includes first and second vertical segments folded at a substantially 180-degree angle relative to each other.
In at least one embodiment, the rear cover mounting portion further includes a hook portion located below the bracket engaging portion and engageable with the forwardly-extending protrusion of the rear bracket connector.
In at least one embodiment, the hook portion is formed by a fold in the gutter cover and extends rearwardly and upwardly so as to abut the forwardly-extending protrusion.
In at least one embodiment, the central cover portion is substantially planar and has a plurality of drainage throughholes, not shown, defined therein to allow liquid such as rainwater to enter the gutter through its open top.
In at least one embodiment, the central cover portion is double-walled and includes an upper panel and a lower panel spaced vertically from the upper panel.
In at least one embodiment, the upper panel is integrally formed with the front and rear cover mounting portions and the lower panel is provided as a distinct piece which is attachable to the upper panel.
In at least one embodiment, the gutter assembly further includes at least one extension member distinct from the bracket member and positionable in alignment with a corresponding one of the at least one bracket member to form an upward extension to the corresponding one of the at least one bracket member.
In at least one embodiment, the bracket extension member is attachable to the front cover mounting portion.
According to another aspect, there is also provided a method for installing a gutter on a surface, the method comprising: attaching at least one bracket member to the gutter to form a bracketed gutter subassembly including the at least one bracket member and the gutter, each bracket member being sized and shaped to conform to an outer face of the gutter; attaching a gutter cover to the bracketed gutter subassembly such that the gutter cover extends over an open top of the gutter; positioning the bracketed gutter subassembly at a desired position against the surface; securing the bracketed subassembly to the surface.
In at least one embodiment, attaching the at least one bracket member to the gutter comprises attaching a plurality of bracket members to the gutter at desired positions along the gutter.
In at least one embodiment, attaching the gutter cover to the bracketed gutter subassembly includes engaging both a front bracket connector of the bracket and a front gutter connector of the gutter in a front cover mounting portion of the gutter cover such that both the front bracket connector and the front gutter connector are entirely covered by the front cover mounting portion.
According to another aspect, there is also provided a gutter assembly comprising: a gutter having a gutter wall extending between a front gutter wall end and a rear gutter wall end, the gutter wall defining a gutter channel having an open top, the gutter wall further having an inner face delimiting the gutter channel and an outer face; a gutter cover for covering the open top of the gutter, the gutter cover comprising front and rear cover mounting portions and a central cover portion extending between the front and rear cover mounting portions, the front cover mounting portion being engageable with the front gutter wall portion, and the rear cover mounting portion being engageable with the front gutter wall portion and the front connecting end of the bracket member to attach the gutter cover to the gutter, the front cover mounting portion including a face panel including a curved portion extending convexly frontwardly from the gutter.
In at least one embodiment, the gutter includes a front gutter connector located at the front gutter wall end and engageable in the front cover mounting portion.
In at least one embodiment, the front cover mounting portion being sized and shaped to entirely cover the front gutter connector when the front gutter connector is engaged in the front cover mounting portion.
In at least one embodiment, the front cover mounting portion includes a front receptacle comprising the face panel, the front receptacle further including a plurality of segments, at least one of the plurality of segments abutting the gutter wall proximal the front gutter wall end to hold the front gutter connector in the front receptacle.
In at least one embodiment, the plurality of segments includes a first segment extending upwardly and slightly forwardly from a front end of the central cover portion and a second segment extending upwardly and slightly rearwardly from the first segment, the first and second segments being angled relative to each other to form an apex therebetween, the first and second segments being sized and shaped such that the apex abuts the gutter wall when the front gutter connector is received in the front receptacle.
In at least one embodiment, the front receptacle further includes an end segment extending upwardly and rearwardly from the curved portion of the face panel.
In at least one embodiment, the gutter assembly further comprises at least one bracket member sized and shaped to conform to the outer face of the gutter wall, each bracket member including front and rear bracket connecting portions connectable respectively to the front and rear gutter wall ends for attaching the bracket member to the gutter to form a gutter subassembly including the gutter and the at least one bracket member.
According to another aspect, there is also provided a gutter cover for covering the open top of a gutter, the gutter having a gutter wall extending between a front gutter wall end and a rear gutter wall end, the gutter wall defining a gutter channel having an open top, the gutter wall further having an inner face delimiting the gutter channel and an outer face, the gutter cover comprising: front and rear cover mounting portions; and a central cover portion extending between the front and rear cover mounting portions, the front cover mounting portion being engageable with the front gutter wall portion, and the rear cover mounting portion being engageable with the front gutter wall portion and the front connecting end of the bracket member to attach the gutter cover to the gutter, the front cover mounting portion including a face panel including a curved portion extending convexly frontwardly from the gutter.
In at least one embodiment, the front cover mounting portion includes a front receptacle comprising the face panel, the front receptacle further including a first segment extending upwardly and slightly forwardly from a front end of the central cover portion and a second segment extending upwardly and slightly rearwardly from the first segment, the first and second segments being angled relative to each other to form an apex therebetween.
In at least one embodiment, the front receptacle further includes an end segment extending upwardly and rearwardly from the curved portion of the face panel.
According to another aspect, there is also provided a gutter assembly comprising: a gutter having a gutter wall extending between a front gutter wall end and a rear gutter wall end, the gutter wall defining a gutter channel having an open top, the gutter wall further having an inner face delimiting the gutter channel and an outer face, the gutter wall having a first stiffness; at least one bracket member sized and shaped to conform to the outer face of the gutter wall, each bracket member including front and rear bracket connectors connectable respectively to the front and rear gutter wall ends for attaching the bracket member to the gutter to form a gutter subassembly including the gutter and the at least one bracket member, each bracket member having a second stiffness greater than the first stiffness such that attaching the at least one bracket member to the gutter stiffens the gutter to facilitate manipulation of the gutter.
It will be appreciated that, for simplicity and clarity of illustration, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements or steps. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein. However, it will be understood by those of ordinary skill in the art, that the embodiments described herein may be practiced without these specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to obscure the embodiments described herein. Furthermore, this description is not to be considered as limiting the scope of the embodiments described herein in any way but rather as merely describing the implementation of the various embodiments described herein.
For the sake of simplicity and clarity, namely so as to not unduly burden the figures with several references numbers, not all figures contain references to all the components and features, and references to some components and features may be found in only one figure, and components and features of the present disclosure which are illustrated in other figures can be easily inferred therefrom. The embodiments, geometrical configurations, materials mentioned and/or dimensions shown in the figures are optional, and are given for exemplification purposes only. Moreover, it will be appreciated that positional descriptions such as “above”, “below”, “top”, “bottom”, “forward”, “rearward” “left”, “right” and the like should, unless otherwise indicated, be taken in the context of the figures and correspond to the position and orientation in the gutter, gutter cover and corresponding parts when being used. Positional descriptions should not be considered limiting.
Referring to
In this embodiment, the bracket members 100 are connectable to the gutter 50 to form a bracketed gutter subassembly 80. Still in this embodiment, the bracket members 100 are configured to stiffen the gutter 50, such that the bracketed gutter subassembly 80 is easier to manipulate than the gutter 50 would be without the bracket members 100.
In the illustrated embodiment, the bracket members 100 may be configured to substantially have the appearance of mounting hooks, such as mounting hooks which are used in the art to secure a gutter to a supporting surface, such as a wall and/or a roof of a building. In prior systems, the mounting hooks would have had to be first aligned with each other and secured on the supporting surface. Since gutters are usually installed relatively high above a ground surface, this operation could be relatively difficult and time-consuming. The gutter would then have to be raised at the height of the mounting hooks and deposited on the mounting hooks in a separate operation, which again could be relatively time-consuming.
In the present embodiment, the bracket members 100 could be connected to the gutter 50 on or substantially near the ground surface to form the bracketed gutter subassembly 80, and the entire bracketed gutter subassembly 80 can then be raised at the desired distance above the ground surface. This would greatly simplify the installation of the bracket members 100 and the gutter 50, while allowing the user to benefit from the same visual appearance as conventional mounting hooks.
Still in the illustrated embodiment, once the bracketed gutter subassembly 80 has been formed, the gutter cover 200 can then be connected to the bracketed gutter subassembly 80. Specifically, the gutter cover 200 can be connected to the bracketed gutter subassembly 80 while the bracketed gutter subassembly 80 is still on or substantially near the ground surface, and the entire gutter assembly 10 including the bracketed gutter subassembly 80 with the gutter cover 200 connected thereto can then be raised at the desired distance above the ground surface and secured to the surface on which the gutter is to be installed.
Still referring to
The gutter 50 further includes a front gutter connector 66 located at the front gutter wall end 54 and a rear gutter connector 68 located at the rear gutter wall end 56. The front gutter connector 66 is engageable with the bracket members 100 to connect the bracket members 100 and the gutter 50 together. In the illustrated embodiment, the front gutter connector 66 is substantially wedge-shaped and includes a front lip 70 which extends forwardly, i.e. away from the gutter channel 58, from the gutter wall 52 at the front gutter wall end 54. Specifically, the front lip 70 includes a front lip segment 72 which is substantially planar and which is folded at an acute angle relative to the gutter wall 52 such that the front lip segment 72 points substantially downwardly. As shown in
Still in the illustrated embodiment, the rear gutter connector 68 includes a forwardly-extending bend 76 which extends forwardly from the gutter wall 52 at the rear gutter wall end 56. The forwardly-extending bend 76 is generally wedge-shaped and delimitates a rearwardly-facing recess 78. The forwardly-extending bend 76 and rearwardly-facing recess 78 are configured for attaching the gutter 50 to both the bracket members 100 and the gutter cover 200, as will be explained further below.
Still referring to
In the illustrated embodiment, each bracket member 100 includes front and rear bracket connectors 102, 104 and a central bracket portion 106 extending between the front and rear bracket connectors 102, 104. The central bracket portion 106 includes a base panel 107 which is curved and extends along the outer face 64 of the gutter wall 52 and an outer rib member 108 which extends away from the base panel 107. More specifically, the outer rib member 108 is generally flat and extends substantially perpendicular to the base panel 107 to thereby stiffen the base panel 107 and maintain the curved shape of the base panel 107. In this configuration, the central bracket portion 106 therefore has a substantially T-shaped cross section. It will be understood that this configuration provides a relatively high stiffness to the bracket member 100. In comparison, the gutter wall 52 has a relatively lower stiffness. When the bracket members 100 are engaged with the gutter 50, the bracket members 100 therefore stiffen the gutter 50. It will be appreciated that a greater stiffness allows the gutter 50 to be manufactured into gutter pieces having a greater length without the gutter pieces bending as they are being manipulated and while still allowing the gutter 50 to be manufactured from a sheet of metal having a relatively small thickness. In other embodiments, other rib members or stiffening members could be used in addition to the outer rib member 108 or instead of the outer rib member 108. In yet another embodiment, instead of an outer rib member 108 or other stiffening members, the central bracket portion 106 could be configured in a configuration providing a relatively high stiffness. For example, the base panel 107 could be substantially thick or, instead of the base panel 107, the central bracket portion 106 could include a curved member which has a box cross-section or any other cross-section shape that would impart stiffness to the bracket member 100.
In the illustrated embodiment, the front bracket connector 102 is sized and shaped to receive the front gutter connector 66. Specifically, the front bracket connector 102 includes a bottom segment 110 extending frontwardly and substantially horizontally, an upright segment 112 extending upwardly and rearwardly from the bottom segment 110 and a hook member 114 extending rearwardly from the upright segment 112. The bottom segment 110 and the upright segment 112 together delimitate a substantially triangular connector receiving recess 116 sized and shaped to receive the substantially wedge-shaped front gutter connector 66 such that the front lip segment 72 extends along the upright segment 112 and the lip segment end 75 abuts a corner 116 defined between the bottom segment 110 and the upright segment 112. The hook member 114 is further substantially sized and shaped to receive therein the front lip elbow 74 of the front gutter connector 66 to prevent movement of the front gutter connector 66 relative to the front bracket connector 102. When the front gutter connector 66 is received in the front bracket connector 102, the front gutter connector 66 is therefore nested in the front bracket connector 102 and is entirely covered by the front bracket connector 102.
In the illustrated embodiment, the rear bracket connector 104 includes a vertical wall portion 118 and a forwardly-extending protrusion 120 defined in the vertical wall portion 118 and spaced downwardly from an upper end 122 of the vertical wall portion 118. The forwardly-extending protrusion 120 is sized and shaped to engage the rearwardly-facing recess 78 of the rear gutter connector 68 to thereby connect together the rear gutter connector 68 and the rear bracket connector 104. The forwardly-extending protrusion 120 may be formed into the rearwardly-facing recess 78 by clinching or press-joining the vertical wall portion 118 to the rear gutter connector 68. Alternatively, the rear bracket connector 104 could be secured to the rear gutter connector 68 using mechanical fasteners such as screws, rivets or the like, adhesive, by welding, by brazing or using any other suitable securing technique.
Referring now specifically to
Referring again to
In the illustrated embodiment, the front cover mounting portion 204 includes a front receptacle 212 sized and shaped to receive the front bracket connector 102 and the front gutter connector 66 therein. Specifically, the front receptacle 212 includes a first segment 214 extending upwardly and slightly forwardly from a front end 215 of the central cover portion 210, a second segment 216 extending upwardly and slightly rearwardly from the first segment 214, a face panel 218 having a straight top portion 220 extending forwardly from the first segment 214 and a curved portion 222 extending forwardly and downwardly from the straight top portion 220 and curving back rearwardly and downwardly, and an end segment 224 extending upwardly and rearwardly from the curved portion 222. When the front bracket connector 102 is received in the front receptacle 212, the front bracket connector 102 is held by an apex 228 formed between the first and second segments 214, 216 abutting the gutter wall 50 proximal the front gutter wall end 54, by the straight top portion 220 abutting the hook member 114 and the end segment 224 abutting the bottom segment 110 of the front bracket connector 102.
In the illustrated embodiment, the rear cover mounting portion 206 includes a bracket engaging portion 230 which has an inverted U-shape for straddling the upper end 122 of the vertical wall portion 118. Specifically, the bracket engaging portion 230 includes first and second vertical segments 232, 234 which are folded at a 180-degree angle relative to each other.
The rear cover mounting portion 206 further includes a hook portion 236 located below the bracket engaging portion 230 and engageable with the forwardly-extending protrusion 120 of the rear bracket connector 104. In the illustrated embodiment, the hook portion 236 is formed by a fold in the gutter cover 200 and extends rearwardly and upwardly so as to abut the forwardly-extending protrusion 120.
In the illustrated embodiment, the central cover portion 210 is substantially planar and has a plurality of drainage throughholes, not shown, defined therein to allow liquid such as rainwater to enter the gutter 50 through its open top 60. The drainage throughholes may be arranged according to any suitable pattern or configuration on the central cover portion 210, and may have any suitable shape and size.
In the illustrated embodiment, the central cover portion 210 is double-walled and includes an upper panel 240 and a lower panel 242 spaced vertically from the upper panel 240. In the illustrated embodiment, the upper panel 240 is integrally formed with the front and rear cover mounting portions 204, 206 and the lower panel 242 is provided as a distinct piece which is attachable to the upper panel 240 via front and rear lower panel connectors 244, 246. Still in the illustrated embodiment, the front lower panel connector 244 is configured to conform to the first and second segments 214, 216 of the front cover mounting portion 204. Specifically, the front lower panel connector 244 includes a first segment 248 extending upwardly and slightly frontwardly and a second segment 250 which extends upwardly and slightly rearwardly. The first and second segments 248, 250 are angled relative to each other at an angle which is substantially similar to the angle between the first and second segments 214, 216 of the front cover mounting portion 204. In this configuration, when the front lower panel connector 244 engages the front cover mounting portion 204, the first segment 248 of the lower panel connector 244 is parallel to and extends along the first segment 214 of the front cover mounting portion 204, and the second segment 250 of the lower panel connector 244 is parallel to and extends along the second segment 216 of the front cover mounting portion 204.
As shown in
In the illustrated embodiment, the rear lower panel connector 246 is configured to engage the hook portion 236 of the rear cover mounting portion 206. Specifically, the rear lower panel connector 246 includes a hook member 252 which is sized and shaped to engage the hook portion 236. As shown in
Alternatively, the central cover portion 210 may not be double-walled and may not include a lower panel, in which case the apex 228 defined between the first and second segments 214, 216 may abut and directly contact the gutter wall 52 and the hook portion 236 may abut and directly contact the forwardly-extending protrusion 120 of the rear bracket connector 104.
Referring to
Turning now to
In this embodiment, the front gutter connector 452 is received in the front cover mounting portion 602 and the front cover mounting portion 602 is received in the front bracket connector 502. Specifically, the front bracket connector 502 is shaped to conform to the front cover mounting portion 602 and extends along an exterior of the front cover mounting portion 602. Specifically, the front bracket connector 502 entirely covers the front cover mounting portion 602. The front bracket connector 502 further terminates in a hook member 650 which engages the second segment 216 of the front cover mounting portion 602.
In the embodiment illustrated in
In this embodiment, to secure the gutter assembly 400 to a surface, instead of the bracket members being first attached to the gutter to form a bracketed gutter subassembly, the gutter cover 600 is instead first attached to the gutter 450 to form a covered gutter subassembly 460. The bracket members 500 can then be attached to the covered gutter subassembly 460, and the covered gutter subassembly 460 with the bracket members 500 attached thereto can be positioned at a desired location along the surface and secured to the surface.
Referring now to
Turning to
Although no bracket members are shown in
While the above description provides examples of the embodiments, it will be appreciated that some features and/or functions of the described embodiments are susceptible to modification without departing from the spirit and principles of operation of the described embodiments. Accordingly, what has been described above has been intended to be illustrative and non-limiting and it will be understood by persons skilled in the art that other variants and modifications may be made without departing from the scope of the invention as defined in the claims appended hereto.
The present application claims priority from U.S. Provisional Patent Application No. 63/203,265, filed on Jul. 15, 2021, the entire specification of which is incorporated herein by reference.
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| Number | Date | Country |
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| 2305159 | Oct 2001 | CA |
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| 2405756 | Mar 2004 | CA |
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| 2723499 | Mar 2011 | CA |
| 2727844 | Jul 2012 | CA |
| 2747513 | Jan 2013 | CA |
| 2783834 | Aug 2013 | CA |
| 2775864 | Nov 2013 | CA |
| 2933239 | Jul 2015 | CA |
| 2863023 | Mar 2016 | CA |
| 166698 | Aug 2016 | CA |
| 169577 | Feb 2017 | CA |
| 2907280 | Feb 2017 | CA |
| 2955268 | Jul 2017 | CA |
| 2919709 | Aug 2017 | CA |
| 2963962 | Oct 2017 | CA |
| 2931540 | Nov 2017 | CA |
| 175672 | Apr 2018 | CA |
| 2985004 | May 2018 | CA |
| 3016527 | Mar 2019 | CA |
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| 3045555 | Dec 2020 | CA |
| 3136440 | Apr 2022 | CA |
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| 1449980 | Aug 2004 | EP |
| 1627974 | Feb 2006 | EP |
| 2159342 | Mar 2010 | EP |
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| 2493284 | Jan 2013 | GB |
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| 2007100320 | Sep 2007 | WO |
| 2008134845 | Nov 2008 | WO |
| 2009150174 | Dec 2009 | WO |
| WO-2015048116 | Apr 2015 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 20230027949 A1 | Jan 2023 | US |
| Number | Date | Country | |
|---|---|---|---|
| 63203265 | Jul 2021 | US |
