Patent Grant
9687086
The invention relates to a refrigerated sales furniture.
Refrigerated sales furnitures of the front access type allowing for horizontal front access to the goods over almost their entire height are known in the state of the art.
One such front access type refrigerated sales furniture is known from the GB 2 231 947 A, which however has the drawback, that no goods to be presented and sold can be placed in the bottom portion thereof, since according to the embodiment of FIG. 2 the fan 40 and the evaporator 60 are arranged underneath the lowest goods presentation shelf. This limits the available space for presenting goods to be sold which is a drawback, since there is a demand for maximizing the available space for presenting goods to be sold.
With many refrigerated sales furnitures of the front access type it is a problem that the bottom areas thereof cannot be cooled as efficiently as it is the case with the goods presentation shelves and the middle and upper portion thereof.
Accordingly, it would be beneficial to provide a refrigerated sales furniture that maximizes the available space for presenting goods to be sold and provides an efficient cooling in the entire goods presentation space and particularly in the bottom area thereof.
This object is attained by the subject-matter of the independent claim, advantageous embodiments are defined in the sub-claims.
A refrigerated sales furniture according to exemplary embodiments of the invention, as described herein, comprises a furniture rear wall extending substantially upright from a base; a goods presentation space including a bottom area; an air suction channel for sucking air from a lower front end portion of the refrigerated sales furniture, the air suction channel having a rear air suction channel portion being arranged at a position behind the bottom area of the goods presentation space and arranged adjacent to and substantially in parallel to the furniture rear wall; a fan for conveying air from the air suction channel through an air pressure channel, through an evaporator, through a cold air channel and through a perforated goods presentation space rear wall to the goods presentation space, the fan being arranged between the air suction channel and the air pressure channel at a height corresponding to the height of the bottom area of the goods presentation space; the air pressure channel having a lower air pressure channel portion that extends in front of and substantially in parallel to the rear air suction channel portion of the air suction channel; the cold air channel having a lower cold air channel portion for conveying cold air through the lower rear wall portion of the perforated goods presentation space rear wall to the bottom area of the goods presentation space, the lower rear wall portion of the perforated goods presentation space rear wall being positioned behind the bottom area of the goods presentation space, the lower cold air channel portion extending between the lower air pressure channel portion of the air pressure channel and the lower rear wall portion of the perforated goods presentation space rear wall.
Exemplary embodiments of the invention are described in greater detail below with reference to the FIGURE, wherein:
The refrigerated sales furniture 2 is of the front access type and can also be called refrigerated sales cabinet. The refrigerated sales furniture 2 allows for a substantially horizontal access to the goods presented therein by a customer standing in front (in
The refrigerated sales furnitures described herein can be operated at normal cooling temperatures of above 0° C. and at freezing temperatures of below 0° C. In one embodiment, the refrigerated sales furniture can be of the open front access type without front access doors, as described with respect to the attached FIGURE. In particular, the refrigerated sales furnitures described herein can be of such kind and/or can be operated to provide for such cooling temperatures at the evaporator(s) and such air temperatures of the air flowing within the goods presentation space that the lowest temperature commonly achievable for products within the goods presentation space is −1° C.
Although the refrigerated sales furniture 2 of
The refrigerated sales furniture of
The interior space of the refrigerated sales furniture 2 comprises a goods presentation space 10, which is confined by a goods presentation space bottom wall 14, by a perforated goods presentation space rear wall 16 and by an upper goods presentation space wall 19, as well as air channels 20, 32, 48, 60, a fan 30 and an evaporator 46 that are at least partly located outside of the goods presentation space 10. The air channels 20, 32, 48, 60, the fan 30 and the evaporator 46 are arranged between the furniture rear wall 6 and the perforated goods presentation space rear wall 16, part of an air suction channel 20 is arranged between the base 4 and the goods presentation space bottom wall 14 and substantially horizontal channel portions 52 and 64 of a cold air channel 48 and a warm air channel 60 extend between the upper goods presentation space wall and the upper furniture wall 8.
In the exemplary embodiment of
Although three goods presentation shelves 70, 72 are shown in
The lowermost of the three goods presentation shelves 70 is formed as an air guiding goods presentation shelf 72. Cold air from the cold air channel 48 (to be described later) flows into the interior of such air guiding goods presentation shelf 72 and is directed through appropriate openings at the underside of such shelf 72 in a substantially vertical direction to the goods compartment lying underneath such air guiding goods presentation shelf 72, which is in the embodiment of
Between the front end of the goods presentation space bottom wall 14 and the lower front portion of the refrigerated sales furniture 2, that can be provided with a removable bumper 76, there is an air entry opening 22 of an air suction channel 20, into which relatively warm return air enters and is conveyed through a substantially horizontal air suction channel portion 24 arranged between the base 4 and the goods presentation space bottom wall 14 and through a substantially vertical rear air suction channel portion 26 that is arranged at a position behind the bottom area 12 of the goods presentation space 10 and arranged adjacent to and substantially in parallel to the furniture rear wall 6, to a fan 30 that sucks the relatively warm return air through such air suction channel 20 and pushes it through an air pressure channel 32, through an evaporator 46, through a cold air channel 48 and through the perforated goods presentation space rear wall 16 to the goods presentation space 10.
The size of the fan 30 in the figures is only of exemplary kind, also fans of greater height can be used as long as their width is sufficient to fit into the available space between the rear air suction channel portion 26 and the lower air pressure channel portion 34.
The substantially vertical rear air suction channel portion 26 is separated from a lower air pressure channel portion 34 of the air pressure channel 32 by means of a vertical wall 28, and in the present embodiment it ends at a height corresponding substantially to the height of the bottom area 12 of the goods presentation space 10. However, there is no functional relationship between the height of the bottom area and the substantially vertical rear air suction channel portion, and consequently the vertical wall 28 can also end at another position of height. The fan 30 is arranged in an appropriate opening of such vertical wall 28, and it is driven by an electric motor that can be at least partly arranged within the substantially vertical rear air suction channel portion 26.
The air pressure channel 32 comprises a lower air pressure channel portion 34, that extends in front of and substantially in parallel to the rear air suction channel portion 26 of the air suction channel 20, and an upper air pressure channel portion 36 having a greater width than the lower air pressure channel portion 34, the upper air pressure channel portion 36 extending between the furniture rear wall 4 and the cold air channel 48. In other words, in the present embodiment the lower air pressure channel portion 34 extends between the rear air suction channel portion 26 and a lower cold air channel portion 54 of the cold air channel 48 (to be described later) up to a height where the rear air suction channel portion 26 ends, which corresponds to the height of the bottom area 12 of the goods presentation space 10. The rear air suction channel portion 26 is that high that the fan 30 can be accommodated therein with its entire height, and consequently the minimum height of the vertical rear air suction channel portion 26 depends on the height of the fan 30. It is understood, that it is possible to have several fans.
The upper air pressure channel portion 36 extends from the position of height, where the rear air suction channel portion 26 ends, up to a position of height corresponding to the lower end of the evaporator 46, and it is confined on the rear side by the furniture rear wall 6 and on the front side by the cold air channel 48.
The vertical wall 42 that separates the air pressure channel 32 from the cold air channel 48 makes a bend approximately at a middle portion of the height of the upper air pressure channel portion 36, in particular a bent to the back so as to define a reduced width upper section 40 of the upper air pressure channel portion 36 and a higher width lower section 38 of the upper air pressure channel portion 36. At the upper end of the reduced width upper section 40 of the upper air pressure channel portion 36 there is an entry side of a warm air channel 60, in particular a vertical warm air channel portion 62, and an evaporator 46, in particular an entry side of an evaporator 46.
The height and the shape of the vertical wall 42 are described in detail with respect to the non-limiting embodiment of
Likewise, the position and the height of the fan 30, of the channel portions 26, 34 and 54, and of the bottom area 12, are described in detail with respect to the non-limiting embodiment of
The warm air channel 60 extends from the position of height corresponding to the entry side of the evaporator 46 along the furniture rear wall 6 and the upper furniture wall 8 to a warm air curtain opening 66, which can be a honeycomb, that is positioned at the front of the upper furniture wall 8, and it comprises a substantially vertical cold air channel portion 50 and a horizontal cold air channel portion 52. The partial air flow flowing through the warm air channel 60 is not cooled by the evaporator 46. Such warm air exits the warm air channel 60 through the warm air opening 66 and forms a curtain of warm air 68 in front of the goods presentation space 10 extending between the warm air curtain opening 66 and the air entry opening 22 of the air suction channel 20.
The evaporator 46 is of relatively small width and it is positioned in the intermediate space between the front side of the vertical warm air channel portion 62 and the perforated goods presentation space wall 16 and leaves free enough space in front of the evaporator 46 so as to form a substantially vertical cold air channel portion 50. The evaporator 46 is part of a refrigeration cycle comprising at least a compressor, a condenser, an expansion device, the evaporator 46 and refrigerant conduits connecting these elements serially so as to form a closed refrigeration cycle. The other elements of such refrigeration cycle except for the evaporator 46 are not shown in
The partial air flow flowing through the evaporator 46 is cooled in the evaporator 46 in heat exchange against a refrigerant circulating in a refrigeration cycle and having been expanded by means of the expansion device before entering the evaporator 46. The air exiting the evaporator 46 from its upper outlet side is called cold discharge air, and it leaves the cold air channel 48 from which it is supplied as cooling air flow to the goods presentation space 10 from the back through the perforated goods presentation space rear wall 16 and as cold air curtain flow to an air curtain opening 56 positioned at the front of the upper furniture wall 8 adjacent to and immediately behind the warm air curtain opening 66 so as to form a curtain of cold air 58 flowing from the cold air curtain opening 56 along the front side of the goods presentation space 10 to the air entry opening 22 of the air suction channel 20. The curtain of cold air 58 is formed behind the curtain of warm air 68, which combination has been shown as particularly effective for minimizing the amount of warm air entering into the goods presentation space 10 from the front.
The cold air channel 48 comprises a substantially vertical cold air channel portion 50 extending over the entire height of the goods presentation space 10, and a horizontal cold air channel portion 52 being positioned underneath the horizontal warm air channel portion 64, the lower wall of which also forms the upper goods presentation space wall.
The substantially vertical cold air channel portion 50 basically has three portions of different widths, namely an upper portion of greater width extending between the upper outlet side of the evaporator 46 and the lower wall of the horizontal warm air channel portion 64, a middle portion of medium-sized width extending between the level of height where the vertical wall 42 makes a bend to the back and level of height corresponding to the upper outlet side of the evaporator 46, and a lower cold air channel portion 54 of smaller width extending between the goods presentation space bottom wall 14 and a level of height where the vertical wall 42 makes a bend to the back.
The width of the upper portion corresponds to the width between the furniture rear wall 6 and the perforated goods presentation space rear wall 16 minus the width of the vertical warm air channel portion 62. The width of the middle portion corresponds to the width between the furniture rear wall 6 and the perforated goods presentation space rear wall 16 minus the width of the evaporator 46 and minus the width of the vertical warm air channel portion 62. The width of the lower cold air channel portion 54 corresponds to the width between the furniture rear wall 6 and the perforated goods presentation space rear wall 16 minus the width of the substantially vertically rear air suction channel portion 26 and minus the width of the lower air pressure channel portion 34.
By the substantially vertical cold air channel portion 50, cold air can be supplied from the back through the perforated goods presentation space rear wall 16 to the goods presentation space 10 over the entire height of the goods presentation space 10, which provides for an efficient cooling of the entire goods presentation space 10, in particular also of the bottom area 12 thereof which could not be attained in conventional refrigerated sales furnitures.
As can be seen in
Likewise such horizontal cold airflow is also present in the goods compartments in the middle and the upper portions of the goods presentation space 10, in particular in the goods compartments over the three goods presentation shelves 70, 72 shown.
Furthermore, by means of the air guiding goods presentation shelf 72 arranged above the bottom area/base compartment 12, cold air from the cold air channel 48, particularly from the substantially vertical cold air channel portion 50, entering the air guiding goods presentation shelf 72 and exiting the same through openings in its bottom enters from above in a downward direction into the bottom area/base compartment 12. This substantially vertical airflow in downward direction is schematically depicted by vertical arrows, and it can be seen that by the combination of cold air entering from behind in a horizontal direction and cold air entering from above in a substantially downward direction, a very efficient matrix cooling can be attained.
The airflow flowing down from the air guiding goods presentation shelf 72 is diverted on its way to the goods presentation space bottom wall 14 in a forward direction by means of the horizontal airflow coming from the back, and so the horizontal and the downwardly directed vertical airflows mix. After having flown through the bottom area/base compartment 12, the air has warmed up in heat exchange against the goods to be sold positioned in the bottom area/base compartment 12 and such airflow enters the air entry opening 22 together with the airflows coming from above, in particular the cold air and warm air curtains 58 and 68.
As a matter of course, also the other goods presentation shelves 70 can be formed as air guiding goods presentation shelves so as to enable an airflow from above in a downward direction to the goods compartment respectively arranged underneath the air guiding goods presentation shelf.
At the front side of the goods presentation space 10, the curtain of cold air 58, the cold air flow coming from the back and the warm air flow coming from the front are depicted schematically by arrows.
A refrigerated sales furniture according to exemplary embodiments of the invention, as described herein, provides for a maximized goods presentation space extending from a very low level of height to a very high level of height within the refrigerated sales furniture, while at the same time an efficient cooling of the entire goods presentation space and in particular of the critical bottom area/base compartment is ensured.
The inventors have discovered that it is advantageous that the fan which is typically quite space-consuming is arranged behind the bottom area of the refrigerated sales furniture. This provides for a refrigerated sales furniture where the entire height can be used for presenting goods to be sold, which meets the demand for a maximized available space for presenting goods to be sold. With the configuration of the exemplary embodiments as described herein, a horizontal cold air flow can be led into the bottom area/base compartment from the back, which ensures an efficient cooling of the entire goods presentation space and in particular of the critical bottom area/base compartment.
The inventors have further discovered that the space available behind the lower rear wall portion of the perforated goods presentation space rear wall can be sufficient for arranging the rear air suction channel portion of the air suction channel, the lower air pressure channel portion of the air pressure channel and the lower cold air channel portion of the cold air channel behind it provided that the width of these channel portions are optimized.
In order to integrate such lower cold air channel portion, the construction depth of the fan area has been optimized and reduced, and the perforated goods presentation space rear wall has been provided with a perforated lower rear wall portion thereof forming the backside of the bottom area/base compartment.
This new backside gets cooled by cold discharge air over the entire height of the base compartment/bottom area and, additionally, the bottom of the base compartment/bottom area gets in contact with cold discharge air too. In conventional refrigerated sales furnitures, the backside of the bottom area of the goods presentation space often came into contact with warmer return air leading to a poor energy efficiency at this point which is reliably avoided according to the refrigeration sales furniture according to exemplary embodiments as described herein, where not only cold air enters the bottom area/base compartment from the back, but also the lower rear wall portion of the perforated goods presentation space rear wall is cold.
Especially in combination with the air guiding goods presentation shelf arranged directly above the bottom area/base compartment, a stable and consistent matrix airflow through the bottom area/base compartment can be provided.
In a refrigerated sales furniture according to exemplary embodiments of the invention lower temperatures of goods stored within the base compartment of the refrigerated sales cabinet can be reached, in particular those lower temperatures correspond to the discharge air temperature.
Further the amount of circulating air can be reduced, since the base compartment gets flown through by cold air directly.
The energy consumption of the refrigerated sales furniture can be reduced because of the advantages as described herein. Moreover, a better temperature performance can be attained, because the air curtain within the base compartment is made more stable even when goods are partly sold.
If the term “the fan” or “a fan” is mentioned within this description and within this claims, this term should be construed to also comprise more than one fan and particularly any appropriate number of fans.
According to an embodiment, the fan is arranged in an opening of a vertical wall separating the rear air suction channel portion of the air suction channel from the lower air pressure channel portion of the air pressure channel. By such arrangement of the fan the available space can be used in a very efficient manner.
According to a further embodiment, the fan is configured to rotate around a substantially horizontal axis. Such fan sucks the air very efficiently from the air entry opening at the front portion of the bottom area and blows the air efficiently through the channels and the evaporator and the perforated goods presentation space rear wall located downstream thereof into the goods presentation space.
According to a further embodiment, the air suction channel has an air entry opening at a front portion of the bottom area, and a substantially horizontal air suction channel portion extending between the base of the refrigerated sales furniture and a goods presentation space bottom wall. By such air suction channel the warm return air can effectively be drawn off from the goods presentation space.
According to a further embodiment, the rear air suction channel portion ends at a height corresponding substantially to the height of the bottom area of the goods presentation space. By such air suction channel portion of optimized height a compact arrangement can be ensured.
According to a further embodiment, the air pressure channel has an upper air pressure channel portion of greater width than the lower air pressure channel portion, the upper air pressure channel portion extending between the furniture rear wall and the cold air channel. By such air suction channel, the air can be blown effectively back into the goods presentation space.
According to a further embodiment, the wall separating the upper air pressure channel portion from the cold air channel makes a bend so as to define a reduced width upper section of the upper air pressure channel portion. By such reduced width upper section of the upper air pressure channel portion the occupied space in the middle rear portion of the refrigerated sales furniture is minimized and the channel width of the cold air channel is maximized.
According to a further embodiment, the cold air channel comprises a substantially vertical cold air channel portion and a horizontal cold air channel portion for conveying cold air to the front side of the top portion of the refrigerated sales furniture. By such cold air channel portions the cold air can effectively be fed to the goods presentation space through the perforated goods presentation space rear wall from behind and at the same time a curtain of cold air can be formed.
According to a further embodiment, at the front side of the top portion of the refrigerated sales furniture there is an air curtain opening of the cold air channel for providing a curtain of cold air in front of the goods presentation space that extends between the air curtain opening and the air entry opening of the air suction channel. By such cold air channel the amount of warm air entering into the goods presentation space from the front can be minimized which provides for a highly efficient cooling.
According to a further embodiment, goods presentation shelves are arranged in the goods presentation space, wherein at least one of the goods presentation shelves is an air guiding goods presentation shelf directing cold air from the cold air channel through its bottom to the compartment of the goods presentation space arranged directly below the goods presentation shelf. By such air guiding goods presentation shelf the goods compartment underneath such shelf can be effectively cooled by means of cold airflows coming from above.
According to a further embodiment, the goods presentation shelf arranged on top of the bottom area of the goods presentation space is an air guiding goods presentation shelf for directing cold air from the cold air channel through its bottom to the bottom area of the goods presentation space. Particularly this portion which is conventionally very difficult to cool, can be cooled reliably by forming the goods presentation shelf arranged above it as air guiding goods presentation shelf.
According to a further embodiment, by conveying cold air through the lower rear wall portion of the perforated goods presentation space rear wall to the bottom area of the goods presentation space and by directing cold air from the cold air channel through the bottom of the air guiding goods presentation shelf to the bottom area of the goods presentation space, a stable and consistent matrix air flow through the bottom area of the goods presentation space is ensured.
According to a further embodiment, a warm air channel is fluidly connected to the air pressure channel. By such warm air channel a partial airflow which is used to form a curtain of warm air along the front side of the goods presentation space is branched off from the air pressure channel.
According to a further embodiment, the warm air channel comprises a vertical warm air channel portion extending basically parallel to the furniture rear wall and a horizontal warm air channel portion extending basically parallel to an upper furniture wall of the goods presentation space.
According to a further embodiment, the vertical warm air channel portion extends between the furniture rear wall and the vertical cold air channel portion, and wherein the horizontal warm air channel portion extends between the upper furniture wall and the horizontal cold air channel portion.
According to a further embodiment, the horizontal warm air channel portion comprises a warm air curtain opening at the front of the upper furniture wall for providing a curtain of warm air in front of the goods presentation space, that extends between the warm air curtain opening and the air entry opening of the air suction channel.
According to a further embodiment, the warm air curtain opening is arranged in front of the cold air curtain opening so that the curtain of warm air will be positioned before the curtain of cold air. By positioning the curtain of cold air behind the curtain of warm air, a further improved efficiency of the refrigerated sales furniture can be attained.
According to a further embodiment, the bottom area of the goods presentation space is formed as a trough, is configured to accommodate or is equipped with a removable container. By such trough or removable container the goods to be presented and cooled can be supported and presented well.
According to a further embodiment, the bottom area of the goods presentation space is confined by a bumper at its front side. By such a bumper the front side of the refrigerated sales furniture can be protected against scratches and the like.
According to a further embodiment, the bumper is of reduced width so as to provide for a sufficient width of the bottom area of the goods presentation space with the rear air suction channel portion of the air suction channel, the lower air pressure channel portion of the air pressure channel and the lower cold air channel portion of the cold air channel being arranged behind the lower rear wall portion of the perforated goods presentation space rear wall. By such reduced width bumper the available goods presentation space can be maximized.
According to a further embodiment, the bumper is removable.
According to a further embodiment, the fan is of reduced width so as to provide for a sufficient width of the bottom area of the goods presentation space. Such a fan has been developed by the inventors. In particular, the vertical rear air suction channel portion can have a width of 30-150 mm, which also limits the width of the fan, such that the fan can have a width of 30-150 mm.
According to a further embodiment, the rear air suction channel portion of the air suction channel, the lower air pressure channel portion of the air pressure channel and the lower cold air channel portion of the cold air channel are of reduced width so as to provide for a sufficient width of the bottom area of the goods presentation space. In particular the width of the lower cold air channel portion can be made smaller than the widths of the rear air suction channel portion and the lower air pressure channel portion. In particular, the vertical rear air suction channel portion can have a width of 30-150 mm, the lower air pressure channel portion can have a width of 30-100 mm and the lower cold air channel portion can have a width of 3-50 mm.
While the invention has been described with reference to an exemplary embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention is not limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP2011/065195 | 9/2/2011 | WO | 00 | 2/28/2014 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2013/029686 | 3/7/2013 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3289432 | Brennan | Dec 1966 | A |
| 3392544 | Perez | Jul 1968 | A |
| 4760708 | Karashima | Aug 1988 | A |
| 5138843 | Tamayama et al. | Aug 1992 | A |
| 5357767 | Roberts | Oct 1994 | A |
| 5502979 | Renard | Apr 1996 | A |
| 5675983 | Ibrahim | Oct 1997 | A |
| 5755108 | Ibrahim et al. | May 1998 | A |
| 6379240 | Livchak et al. | Apr 2002 | B2 |
| 6539741 | Navarro | Apr 2003 | B2 |
| 6701735 | Daddis, Jr. et al. | Mar 2004 | B1 |
| 6742344 | Vormedal | Jun 2004 | B2 |
| 6912864 | Roche | Jul 2005 | B2 |
| 7062932 | Downs | Jun 2006 | B2 |
| 7065977 | Upton et al. | Jun 2006 | B2 |
| 7121104 | Howington et al. | Oct 2006 | B2 |
| 7137438 | Nomura et al. | Nov 2006 | B2 |
| 7681409 | Alahyari et al. | Mar 2010 | B2 |
| 20050126196 | Grassmuck et al. | Jun 2005 | A1 |
| 20050257548 | Grassmuck | Nov 2005 | A1 |
| 20060042288 | Downs | Mar 2006 | A1 |
| 20090044553 | Tilley | Feb 2009 | A1 |
| Number | Date | Country |
|---|---|---|
| 460066 | Jul 1968 | CH |
| EP 0628775 | Dec 1994 | DE |
| 202010008333 | Nov 2010 | DE |
| 0583152 | Feb 1994 | EP |
| 0628775 | Dec 1994 | EP |
| 1741367 | Jan 2007 | EP |
| 2231947 | Nov 1990 | GB |
| 2269657 | Feb 1994 | GB |
| 52-001557 | Jan 1977 | JP |
| 52-019354 | Feb 1977 | JP |
| 52-040865 | Mar 1977 | JP |
| 53-063653 | Jun 1978 | JP |
| 53-064863 | Jun 1978 | JP |
| 54-030565 | Mar 1979 | JP |
| 1-208688 | Aug 1989 | JP |
| 1-222183 | Sep 1989 | JP |
| 1-239374 | Sep 1989 | JP |
| 1-285770 | Nov 1989 | JP |
| 6-011236 | Jan 1994 | JP |
| 6-011245 | Jan 1994 | JP |
| 6-018145 | Jan 1994 | JP |
| 6-026753 | Feb 1994 | JP |
| 6-241641 | Sep 1994 | JP |
| 2005074755 | Aug 2005 | WO |
| Entry |
|---|
| International Search Report and Written Opinion; PCT/EP2011/065195; date of mailing May 11, 2012. |
| Number | Date | Country | |
|---|---|---|---|
| 20140216090 A1 | Aug 2014 | US |
