This application is the national stage entry of International Application No. PCT/EP2020/075181, filed on Sep. 9, 2020, which is based upon and claims priority to European Patent Application No. 19382784.7 filed on Sep. 10, 2019, the entire contents of which are incorporated herein by reference.
The present invention relates to a forehead bindi-holding device created to facilitate, improve and enrichen the experience of wearing bindis.
Bindis (from Sanskrit word ‘bindu’, meaning ‘drop’ or ‘spot’) are generally defined as simple small decorative marks or elements that many people (principally women from Meridional and Southeast Asia) carry on a precise horizontally-centered point of their foreheads (on the position of the so called ‘third eye’). People wear bindis for different often-mixed reasons: to beautify themselves, to socially-identify themselves, or to try to positively influence themselves (or their surrounding environment) in aspects such as health, wellbeing, spirituality, intellectual capacity, physical performance, and luck.
A wide majority of users of bindis stick them directly on the approximate center of the skin of their foreheads via some kind of adhesive material. This system implies quite many inconveniencies, namely:
In spite of the numerous limitations and inconveniences associated to the current ways of wearing bindis via adhesive materials, a convincing alternative system does not yet exist in the prior art, due to general old-habits inertia and to lack of sufficient popular ingenuity in trying to resolve regular mundane inconveniences.
A market research results in finding only a few possible alternative solutions to glue-sticking bindis:
A patent prior-art search results in finding, not specific bindi-holding inventions, but some indirectly-related patents presenting mechanisms that allow attachment of decorative elements to eyewear, for example:
The Patent Application US 20082392 A1 discloses an interchangeable eyewear adornment-attachment accessory comprising a mounting member with the shape of a shallow cup allowing an aesthetic adornment to be temporarily attached to it, by means of a clip-type connection. The adornment disclosed in this document is attached to the glasses bridge, via the mentioned clip connection. However, no adornment of the bindi type could be attached to glasses using this configuration, such that the adornment could be placed on a user's forehead. Moreover, no correct orientation or placement of the adornment is described or hinted by the mentioned patent application, which remains silent in this respect. The problematic of wearing bindis correctly placed substantially in the middle of the user's forehead and also under a certain constant pressure ensuring no movement is not solved neither mentioned by this application, which remains silent in this regard.
For example, Japanese Utility Model JPS616820 U discloses an eyewear adornment, of the jewelry type, that is attached to the user's glasses by supporting means. These supporting means comprise a central element attaching the adornment to the glasses bridge and comprises two side elements joining the adornment to the glasses structure. In this way, the adornment is fixed to the glasses structure and remains in place. However, the eyewear adornment is not interchangeable, and is also intended to be put in place with respect to the glasses structure, that is, no placement of the adornment is intended by the present document with respect to the user's face, specifically the user's forehead. Once again, the problematic of supporting bindis correctly in place on/by a user's forehead with time is not mentioned by this document, which remains fully silent over this and provides no hint in this respect.
It is also known, for example, Chinese Utility Model CN 204832698 U, disclosing a mechanism that uses magnets to facilitate the anchoring of nose-pads to an eyewear central bridge. It also contemplates the possibility of adding decorative elements, that will be placed on the glasses bridge. As already mentioned for the previous documents of prior art, nothing in this document describes or hints towards placing any decoration on the forehead of a user, such as a bindi or the like. Moreover, placing these decorative objects such as bindis on/by the user's forehead over time, at a certain central position, would not be achieved by this document, neither would it be obvious to create a structure allowing this.
It is also known in the state of the art the Japanese Utility Model JPS5516546 U, disclosing a clipping mechanism to attach an adornment piece to an eyewear rim, typically to a glasses bridge. Once again, this document does not disclose any attachment structure allowing placing decorative elements on/by a user's forehead, such as bindis or the like.
The known Patent Application US 2018267337 A1 discloses a pair of eyeglasses with interchangeable parts to allow randomly changes in the lens, nose support and decorative parts of the frame. However, this document does not mention neither would allow placing a decorative object, such as a bindi or the like, on/by a user's forehead, neither at a certain positioning.
The document WO2004/0239245A1 discloses a band for ornament that can be attached to the face.
As can be noticed, the referred inventions have the object of allowing simple decorative customizations to eyewear, not of providing systems to facilitate and perfectly place one or more bindis in their exact central forehead positions, nor to customize, improve and enrichen the bindi-wearing experience, as it is the object of the present invention. No element or part of any of these documents could be based to obtain by combination the present invention, as it will be further described, and no part of the documents either hints to the problematic of correctly placing and wearing one or more bindis, as it is the object of the invention.
In view of the foregoing prior art, an object of the present invention is to provide a device for holding forehead bindi-like objects, further enhancing the user's experience of wearing them.
The device object of the present invention allows the user many advantages, such as the ones described below:
According to a first aspect, the invention relates to a forehead bindi-holding device BH for holding at least one bindi BI and configured to be arranged on a supporting object SO worn by a user US: when the user wears the supporting object SO with the forehead bindi-holding device BH, the at least one bindi BI is placed on or by the user's forehead. The forehead bindi-holding device BH of the invention comprises: one or more cups CU each of them supporting, holding and containing each of the one or more bindis BI; one cups-holder CH to support the one or more cups CU; one stem element ST to support the cups-holder CH at the upper end of the stem element ST, and one attachment unit AU for attaching the lower end of the stem element ST to the supporting object SO.
Preferably, the stem element ST in the forehead bindi-holding device BH of the invention comprises a plurality of consecutive segments, these segments being of longitudinal straight shape and/or of longitudinal curved shape.
Typically, in the forehead bindi-holding device BH according to the present invention, the attachment unit AU is fixed, not leaving any substantial degree of movement between the lower portion of the stem element ST and the supporting object SO.
In a preferred embodiment, at least one of the segments of the stem element ST is made out of a material sufficiently malleable to allow the stem element ST to modify its inclination relative to the supporting object SO and/or the position of the upper end of the stem element ST relative to the supporting object SO.
According to one possible embodiment, the attachment between the stem element ST and the supporting object SO is articulated, comprising a movable joint MJ to allow a degree of rotational movement of the stem element ST about its point of union with the supporting object SO.
Preferably, the attachment unit AU further comprises a forehead pressure-mechanism PM configured to exert a sufficient constant force to push the top end of the stem element ST towards the user's forehead.
The attachment unit AU can also further comprise an adjustment mechanism AM allowing to modify the degree of inclination of the stem element ST with respect to the supporting object SO.
According to another possible embodiment, the articulated attachment unit AU allows up to 180° of rotation of the stem element ST about the movable joint MJ and relative to the supporting object SO to facilitate folding of the bindi-holding device into/with the supporting object SO.
In an embodiment of the forehead bindi-holding device BH of the invention, the stem element ST comprises a transparent and/or translucid material to minimize the visual impact of the forehead bindi-holding device BH and to maximize the visual impact of a bindi BI via said forehead bindi-holding device BH.
Typically, the one or more cups CU in the forehead bindi-holding device BH of the invention are configured attachable and/or detachable to and/or from the cups-holder CH via a magnets-, screwing-, fitting- or clipping-mechanism.
According to a possible embodiment of the invention, the forehead bindi-holding device BH comprises two cups CU, one external cup CU1 configured to hold an external bindi BI1 oriented towards the public, and another internal cup CU2 configured to hold an internal bindi BI2 oriented towards the forehead skin of the user US.
Preferably, the forehead bindi-holding device BH can also be configured in such a way that, when the external and internal bindis BI1, BI2 are mounted on their respective cups CU1, CU2, the internal bindi BI2 is majorly engulfed by the external bindi BI1 and remains fundamentally hidden from an observer placed in front of the user US, whilst keeping its orientation towards the forehead skin and/or its direct contact with it.
Typically, the one or more cups CU in the forehead bindi-holding device BH of the invention can be hidden by the bindis BI they support.
According to yet another embodiment of the invention, the cups-holder CH is configured attachable and/or detachable to and/or from the stem element ST via a magnets-, screwing-, fitting- or clipping-mechanism.
Prior to describing different embodiments of the invention, the following key concepts are explained: bindis, user, nose plane, eyes line/plane, central line, forehead, target location, forehead line/plane, observer's line, and bindis region.
In some of the subsequent text paragraphs, reference signs are mentioned which appear in the attached drawings.
Bindis
Forehead-worn bindi-like objects (referred as “bindis” or BI or BI1/2) are defined as small marks or elements that some individuals carry on precise horizontally-centered positions of their foreheads, be it in direct or apparent contact with the surface of the forehead skin or at exact distances from it.
Bindis are worn by people for miscellaneous sometimes-mixed purposes such as those of self-beautification, self-bettering, social-identification, and surrounding-environment/people improvement.
Bindis can be considered of two types, depending on the way they are oriented when worn:
Bindis are not claimed as part of the device object of this invention.
User, Nose Plane, Eyes Line/Plane, Central Line, Forehead
A common individual using the bindi-holding device is referred as a “user” or US. When wearing the apparatus on his/her head, the user is presumed to be standing up and looking to the front, with his/her head straight and aligned with his/her upper body (as in
The imaginary vertical plane that approximately crosses between a user's eyes splitting the head in two approximately-symmetrical left and right halves, is referred as the “nose plane” or NP. The imaginary horizontal line joining both of the user's eyes is referred as the “eyes line” or EL. The imaginary horizontal plane containing the eyes line is referred as the “eyes plane” or EP. The imaginary line resulting from the intersection between the nose plane and the eyes plane is referred as the “central line” or CL. The external surface of the skin of the user's forehead is referred as “forehead” or FO.
Target Location, Forehead Line/Plane, Observer's Line and Bindis Region
The user requires at least one bindi to be placed at a precise location relative to the specific physiognomy of his/her eyes, nose and forehead (referred as “target location”).
The imaginary line that is contained within the nose plane, is approximately perpendicular to the forehead, and crosses a target location, is referred as “forehead line” or FL. The imaginary plane that is perpendicular to the forehead line and contains a portion of the forehead skin is referred as “forehead plane” or FP.
The forehead plane is different for each user as it depends on the specific physiognomy of the user's eyes, nose and forehead, as well as on his/her desired target locations for bindis. The inclination of the forehead plane (which usually varies between 0 and 45 degrees from the vertical) is especially important for determining the optimal orientation of an internal bindi. By way of example, a forehead plane of an average female user wearing bindis at an average position can be estimated to be inclined backwards approximately between 5° and 30° away from the vertical.
It is referred as “observer's line” or OL the imaginary line that:
The inclination of the observer's line is different for each user as it depends on his/her perceived difference between the vertical height of a worn external bindi and the height of the eyes of targeted potential viewers of the worn bindi. By way of example, a lower-than-average sized individual, may aim for a 75°-from-vertical observer's line because he/she believes most people looking at his/her external bindi from an average proximity when on a standard standing conversation, will be looking down at his/her bindi following a sight line with 25° of descending inclination.
Target locations are within or near the approximate central vertical frame of the user's forehead. More precisely, target locations are considered to be always within a volumetric region (referred as “bindis region” or BR) defined by the set of points:
The solution involves a forehead bindi-holding device (referred as BH) conceived to facilitate, improve and enrichen the experience of wearing bindis.
Key Components
In a first embodiment, the bindi-holding device of the invention comprises:
Each bindi is associated to one cup, and the function of each cup is to support, contain and hold an associated bindi. A set comprising a cup and its associated bindi is referred as a “bindi unit” or BU1/2.
The cup is a small solid piece, usually with a hollow side, to facilitate supporting/containment/holding of the associated bindi; however, it may also be a simple component with not a hollow space but with a flat or a convex shape such as a small plate or a small protruding shape to which the associated bindi is fixedly attached.
The cup can vary in size and shape depending on the characteristics of the bindi it is to support.
In a preferred embodiment of the invention, the cups are easily attachable/detachable to/from the cups holder via a magnets-, screwing-, fitting- or clipping-mechanism. This mechanism permits bindis fixedly attached to their cups (forming solid bindi units) to be attached/detached to/from the bindi-holding device with ease, thus allowing bindi units to be easily exchangeable.
In a further preferred embodiment of the invention, the cups are two in number: one configured to hold an external bindi (oriented towards the public and referred as “external cup” or CU1) and another one configured to hold an internal bindi (oriented towards the forehead skin and referred as “internal cup” or CU2).
In a still further preferred embodiment of the invention, the two cups are oriented in opposite directions, this is, one configured to hold an external bindi (oriented towards the public) and one configured to hold an internal bindi (oriented towards the forehead skin).
In a further possible embodiment of the invention, one or more of the cups are hidden by the bindis they support. This results in bindi units that, when attached to the cups holder, completely hide the cups to an external viewer.
In a still further possible embodiment of the invention, when the internal bindi and the external bindi are mounted on the bindi-holding device, the internal bindi is engulfed by the external bindi and remains fundamentally hidden from an observer placed in front of the user, whilst keeping its orientation towards the forehead and/or maintaining its direct contact with it.
Cups Holder
The cups holder has the function of supporting one or several of the cups of the bindi-holding device.
In a preferred embodiment of the invention, the cups holder allows easy attachment and detachment of the bindi units.
In a still further preferred embodiment of the invention, the cups holder is inexistent, imperceptible, or hidden by the cups and/or the bindis it supports.
When a cups holder is configured to support an external cup and an internal cup (or, equivalently, an external bindi unit and an internal bindi unit), it is configured to allow placement of the two cups with their bindi placing sides facing opposite directions: one towards the outside of the forehead and one towards the inside of the forehead.
In an alternative embodiment of the invention, the cups holder is easily attachable/detachable to/from the stem via a magnets-, screwing-, fitting- or clipping-mechanism. This allows a pair of bindi units to be easily attached/detached to/from the bindi-holding device not one by one, but both simultaneously.
When adequately worn, the cups holder is approximately placed within the nose plane.
Stem
The stem is an elongated-shape element presenting a longitudinal length that ranges from 1 mm to 4 cm.
The principal functions of the stem comprise:
When adequately worn, the stem is approximately placed within the nose plane.
In a preferred embodiment of the invention, the stem further comprises 5 consecutive segments (referred as “stem segments”):
Stem segments are configured as follows:
Longitudinal lengths of stem segments range from 0 cm to 2 cm, and at least one of them is greater than 1 mm.
Any stem segment presenting a longitudinal length of 0 cm is considered as physically-inexistent but virtually existent, hence non-consecutive physically-existing stem segments are physically attached to one another when all of in-between stem segments are physically-inexistent.
Curvature profiles of stem segment 2 and stem segment 4, if physically-existent, are the former of concave nature and the latter of convex nature or, vice versa, the former of convex nature and the latter of concave nature.
If the attachment unit includes a fixed joint, the stem, or at least one of the stem segments, is made out of a material sufficiently malleable to allow the stem to be bent within the nose plane in order to modify the inclination of the stem relative to the supporting object and/or the position or orientation of the upper end of the stem relative to the supporting object.
The stem can be composed by a transparent or translucid material to minimize visual impact of the bindi-holding device and maximize visual impact of a worn bindi via said bindi-holding device by possibly providing the apparent look of an air-floating bindi.
Supporting Object
The supporting object is an object worn by the user on his/her head such as an eyewear, a diadem-like object, or a specific supporting component created for the bindi-holding device. The fundamental function of the supporting object, relative to the bindi-holding device, is to solidly support said bindi-holding device.
The supporting object can in turn be supported by miscellaneous parts of the user's head, or combinations of them, such as the upper portion of the head, the sides of the head, the forehead, the upper portion of the ears, the upper portion of the nose, or the bridge or lateral sides of the nose.
The supporting object comprises a solid portion (referred as “supporting segment” or SS) that is located approximately within the nose plane and not further than 4 cm away from the bindis region. For a proper usage of the bindi-holding device, the supporting segment must be stable relative to the user's head.
When the supporting object is an eyewear, the supporting segment is usually placed approximately on the central line, below the target location, and touching or almost-touching the skin of the user's nose bridge.
When the supporting object is a diadem-like object, the supporting segment is usually placed on the upper portion of the user's forehead, above the target location, touching or almost-touching its skin.
The imaginary plane parallel to the eyes line, approximately containing the supporting segment, and including the longest dimension within a section of the supporting segment when intersected by the nose plane, is referred as the “supporting plane” or SP.
The supporting object is not claimed as part of this invention.
Attachment Unit
The key function of the attachment unit is to facilitate an attachment arrangement between a lower end of the stem and the supporting segment.
In a possible embodiment of the invention, the attachment between the stem and the supporting segment is of fixed nature (referred as “fixed joint” of FJ), thus not leaving any degree of movement between the lower portion of the stem and the supporting segment. In this case, the attachment unit can be as simple and minimal as a welding, gluing, clipping or screwing arrangement.
In a preferred embodiment of the invention, the attachment between the stem and the supporting segment is articulated comprising a movable joint (referred as MJ) to allow a degree of rotational movement (referred as “stem rotation” or SR) of the stem about its point of union with the supporting object and approximately within the nose plane.
Forehead-Pressure Mechanism
In a further preferred embodiment of the invention, the attachment unit further comprises a mechanism (referred as “forehead-pressure mechanism” or PM) that, based on the elasticity properties of one or more stem segments coupled with the specific configuration of the orientation of the stem relative to the supporting object, and/or based on components such as springs, elastic-bands/plates or any other elements with elastic properties, allows exertion of a mild constant force (referred as “pressure on skin” or PS) directly or indirectly pushing the top end of the stem towards the user's forehead skin and approximately within the nose plane to assure that either an internal bindi, or the back of the cup of an external bindi (via a possible pad-like element), or the cups holder (also via a possible pad-like element), is kept in constant contact with the skin of the user's forehead. Therefore, in some embodiments, the forehead-pressure mechanism (PM) may comprise one or more elastic stem segments orientable disposed in relation to the supporting object and/or comprise a further elastic element or component (i.e. a spring like mechanism or an elastic-band/plate).
The purpose of the forehead-pressure mechanism can be not only to assure constant contact of a bindi with the forehead, but also to provide an additional point of support to the supporting of the supporting object on the head of the user (e.g. when the supporting object is an eyewear, a forehead-pressure mechanism may significantly alleviate the pressure of the weight of the eyewear on the points of contact of the nose pads of the eyewear with the skin of the nose).
In improved embodiments, the supporting object is adapted to integrate the forehead-pressure mechanism with the aim of optimizing volume, manageability and ease of use of the supporting object plus the bindi-holding device.
Adjustment Mechanism
In an alternative embodiment of the invention, the attachment unit further comprises an adjustment mechanism (referred as “adjustment mechanism” or AM) to allow the user to modify and leave fixed the degree of inclination of the stem relative to the supporting object when moving said stem approximately within the nose plane.
In improved embodiments, the supporting object is adapted to integrate the attachment unit with the forehead-pressure mechanism with the aim of optimizing volume, manageability and ease of use of the supporting object plus the bindi-holding device.
Folding Feature
In a further preferred embodiment of the invention, the attachment unit comprises a movable joint that allows up to 180° of rotation of the stem about the movable joint of the attachment unit and relative to the supporting segment in order to facilitate folding of the bindi-holding device into/with the supporting object.
This folding feature (referred as “folding feature” or FF) allows partially hiding the device within the supporting object and/or allows handling a more compact, robust and manageable set comprising the supporting object plus the bindi-holding device when said bindi-holding device is not in operating mode.
The folding of the bindi-holding device with/into the supporting object may not necessarily imply blocking or reducing other uses of the supporting object, nor forcing the user to take off the supporting object from his/her head.
In improved embodiments, the supporting object is adapted to integrate the attachment unit with the forehead-pressure mechanism and/or the adjustment mechanism with the aim of optimizing volume, manageability and ease of use of the supporting object plus the bindi-holding device, for example by having the supporting segment as close as possible to the target location, hence needing a shorter stem easier to be folded with/into the supporting object.
Orientation Mechanism
In a still further advanced embodiment, the cups holder comprises a mechanism (referred as “orientation mechanism” or OM) to allow adjustment of the angle of orientation, within the nose plane, relative to the stem-attached part of the cups holder, of an external portion of the cups holder (referred as “external cups holder” or CH1) capable of holding an external bindi unit, wherein said external cups holder can rotate in a rotational movement (referred as “cup rotation” or CR) about a hinge-like component (referred as “hinge” or HI) that connects said external cups holder with said cups holder CH.
Bearing in mind the exposed concepts and functionalities common to the different embodiments of the invention, figures illustrating said embodiments are below described in greater detail:
Stems ST can be much simpler than the one shown of
Following, there is a list of explanatory steps on how a preferred embodiment of the bindi-holding device can be used/worn:
1) The user takes the supporting object, e.g. a piece of eyewear, to which the bindi-holding device has been previously, temporarily or permanently, attached.
2) If the bindi-holding device is configured to hold an external bindi, the user may compose his/her own external bindi by choosing and placing its material(s) inside the cup of the bindi-holding device meant to hold the external bindi, or he/she may choose a bindi unit from a possible set of existing exchangeable external bindi units to later attach it to a corresponding part of the cups holder devised for holding the external bindi. As way of example, an external bindi material could be a nicely-odorous sandal-wood paste, or an external bindi unit could be a precious jewel fixedly mounted into a cup specifically designed to be attached to the bindi-holding device.
3) If the bindi-holding device is configured to hold an internal bindi, the user may compose his/her own internal bindi by choosing and placing its material(s) inside the cup of the bindi-holding device meant to hold the internal bindi, or he/she may choose one bindi unit from a set of possible exchangeable internal bindi units to later attach it to a corresponding part of the cups holder devised for holding the internal bindi. As way of example, an internal bindi material could be a mix-of-herbs medicinal powder or an iodine-supplement healing patch, or an internal bindi unit could be a bio-magnetic healing stone fixedly mounted to a cup specifically designed to be attached to the bindi-holding device.
4) The user puts the supporting object on his/her head (e.g. supporting it on the top portion of his/her ears and/or on the laterals of his/her nose bridge) assuring it is sufficiently stable. If the bindi-holding device comprises a folding feature, the user unfolds the bindi-holding device from the supporting object in order to properly put it on his/her forehead (in its operating position).
5) If the bindi-holding device has been already configured to the specific needs and wants of the user, the user can proceed to wear the bindi-holding device and enjoy the bindi-wearing experience until he/she wants to take off or annulate the functioning of the bindi-holding device (step 11).
6) In order to find the target location of a bindi by adjusting the bindi-holding device, the user, consciously or unconsciously, directly or indirectly, is considering the following variables:
7) If the bindi-holding device comprises a forehead-pressure mechanism, and the user wants to wear an internal bindi permanently touching his/her forehead, the user in principle does not need to modify the inclination of the stem relative to the supporting object because the forehead-pressure mechanism assures permanent sufficient contact of the internal bindi with the forehead. Nevertheless, the user may want to modify other variables regarding the shape and positioning of the stem in order to reach the precise target location for the internal bindi.
8) If the attachment unit of the bindi-holding device comprises an adjustment mechanism the user can make use of it to gradually modify the inclination of the stem relative to the supporting object until the bindi(s) attached at the top end of the stem (via their cups and the cups holder) reach target location(s).
9) If the bindi-holding device is composed by a malleable material, and it does not include an adjustment mechanism, or does not include a forehead-pressure mechanism, or if the forehead-pressure mechanism is not enough to place the bindi(s) at its(their) exact desired position(s), the stem can be bent manually in order to reach the aimed target location(s).
10) A short trial-and-error process might be needed to find the optimal configuration of the bindi-holding device in order to reach a permanent perfect user-customized placement for the bindi(s).
11) When wanting to temporarily quit wearing the bindi(s), the user can simply take off from his/her head the supporting object with the bindi-holding device attached. If the bindi-holding device includes a folding feature, the user may want to fold the bindi-holding device into/with the supporting object—and possibly to dismount the bindi unit(s)—and then continue wearing the supporting object with the bindi-holding device in its folded (non-operating) position.
12) In the case of a bindi-holding device with an orientation mechanism, the user may want to use it to modify the inclination of the external bindi relative to the internal bindi or the cups holder by means of simple manual modification of the angle between the external cups holder (holding the cup external cup with the external bindi) and the part of the cups holder attached to the stem.
Number | Date | Country | Kind |
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19382784 | Sep 2019 | EP | regional |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2020/075181 | 9/9/2020 | WO |
Publishing Document | Publishing Date | Country | Kind |
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WO2021/048196 | 3/18/2021 | WO | A |
Number | Name | Date | Kind |
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20080239232 | Guerrero | Oct 2008 | A1 |
20150173468 | Stevenson | Jun 2015 | A1 |
20180267337 | Walker | Sep 2018 | A1 |
Number | Date | Country |
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2016101354 | Sep 2016 | AU |
204832698 | Dec 2015 | CN |
19835585 | Feb 2000 | DE |
2777165 | Oct 1999 | FR |
S5516546 | Feb 1980 | JP |
S616820 | Jan 1986 | JP |
10023906 | Jan 1998 | JP |
2004023921 | Mar 2004 | WO |
Number | Date | Country | |
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20220330667 A1 | Oct 2022 | US |