Classifications

• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
  • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
  • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47C—CHAIRS; SOFAS; BEDS
  • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
  • A47C31/001—Fireproof means
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
  • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
  • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
  • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
  • D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/425—Cellulose series
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4266—Natural fibres not provided for in group D04H1/425
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4326—Condensation or reaction polymers
  • D04H1/4334—Polyamides
  • D04H1/4342—Aromatic polyamides
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
  • D04H1/43825—Composite fibres
  • D04H1/43828—Composite fibres sheath-core
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
  • D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
  • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
  • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2503/00—Domestic or personal
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/697—Containing at least two chemically different strand or fiber materials
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
  • Y10T442/697—Containing at least two chemically different strand or fiber materials
  • Y10T442/698—Containing polymeric and natural strand or fiber materials

Definitions

• This invention relates to a fire resistant fabric particularly useful as a fire-blocking batting in a mattress and furniture.
• a fire barrier into a mattress
• one of the existing layers of material be converted to one that can act as a fire blocking layer.
• most mattresses have a high loft fiber batting, and this batting can provide additional fuel if made from flammable materials. Replacing this high loft material with material having a low thermal performance temperature typically represents an acceptable solution.
• Fire resistant cellulosic fibers can be used effectively to thermally protect a mattress, however these battings are typically dense and not soft to the touch.
• PCT Publication WO 03/023108 discloses a nonwoven high loft flame barrier for use in mattresses and upholstered furniture. These barriers have very low density, ranging from 5 to 50 kilograms per cubic meter, most preferably 7.5 to 15 kilograms per cubic meter.
• the preferred nonwoven high loft flame barrier comprises a blend of fibers including fibers that are inherently fire resistant and resistant to shrinkage by direct flame, and fibers from polymers made with halogenated monomers.
• United States Patent Application Publication US 2004/0060119 discloses a fire barrier fabric having a fire barrier layer and a thermally insulating layer.
• the fire barrier layer can be composed of a blend of aramid and modacrylic fibers and the thermally insulating layers can be composed derived from fire resistant viscose and modacrylic fibers.
• This invention relates to a fire-resistant fabric useful as a batting in fire blocking an article such as a mattress or upholstery and a method of incorporating the fabric into an article.
• the fabric comprises:
• the fabric will have a least one of the following: (a) a thermal performance temperature in a range from 125°C to 500°C.
• the present invention also relates to a method of incorporating the fabric into a final article of manufacture such as a batting in a mattress or furniture.
• FIGURE 1 is a graph of thermal performance temperature versus wool content in a fabric on a basis of cellulose fiber and wool. All fabrics displayed in this figure have a nominal basis weight of 5.0 ounces per square yard (169.5 grams per square meter) 20% of which is binder fiber.
• a first necessary material in the present invention is a cellulose fiber which retains at least 10 percent of weight when heated in air at a rate of 20°C. per minute.
• a preferred cellulose fiber is one formed from viscose fiber containing hydrated silicon dioxide in the form of a silicic acid with aluminum silicate sites.
• Viscose fiber containing silicic acid is sold under the trademark Visil® by Sateri Oy Company of Finland.
• a second necessary material in the present invention is animal wool such as from sheep and goats. Sheep's wool is preferred due to availability and cost.
• the amount of wool present in the fabric will be in a range from 15 to 70% by weight on a basis of the cellulosic fiber and wool.
• the wool will be in a range from 20 to 50 % on the same basis of cellulosic fiber and wool.
• Weight as employed herein can also be expressed as basis weight measured in accordance with ASTM D 6242-98.
• a preferred embodiment is a non-woven fabric that contains a binder.
• the preferred non-woven fabrics are high loft battings having thermoplastic binders.
• a preferred binder is in the form of a fiber, namely a sheath/core bicomponent fiber having a core of polyester homopolymer and a sheath of copolyester such as are commonly available from Unitika Co., Japan (e.g., sold under the trademark MELTY®).
• Other binders such as thermoplastic powders or fibers commonly used to bind fibers in webs may be used.
• the fire-resistant fabric will have a thermal performance temperature in a range from 125°C to 500°C. More preferably the range will be from 200 to 400°C.
• thermal performance temperature is measured using the same instrument employed for NFPA1971 Standard on
• the instrument is operated in a data acquisition mode.
• a 2 cal/cm 2 /second (8.38 J/cm 2 /second) heat flux is imposed on a fabric for 90 seconds.
• the heat passing through the material is measured using a calorimeter placed in direct contact with the back face (base layer) of the fabric. This calorimeter slightly compresses the tested material.
• the temperature of the calorimeter thermocouple at the end of the 90 seconds exposure represents the thermal performance temperature. This temperature is a linear positive function of the amount of heat transferred through the test specimen and therefore, can be used to compare the thermal insulating performance of one fabric to another.
• a further desirable property in a preferred embodiment of the flame resistant fabric is that it is perceived as soft and comfortable.
• One way of describing such comfort is its capability to compress at a minimum applied load. Although this property may be measured in different ways, in the present case, compression is measured in ASTM standard D 6571-01 but modified with use of a 17.6 pound (8 kilogram) weight, a fabric sample size of twelve by twelve inches (30.4 x 30.4 centimeters).
• the test procedure in the present invention involves compressing the sample under a 17.6 pound (8 kilogram) weight for 6 hours, removing the load, allowing the sample to recover for a 10 minute period and then measuring the sample thickness.
• This sample thickness designated the initial sample thickness, is the starting value upon which % compression is finally determined.
• the sample is again compressed under the 17.6 pounds (8 kilogram) weight for 24 hours after which period the thickness of the loaded and compressed sample is measured. This thickness value is designated the final thickness. From these initial and final thicknesses the % compression is computed from the following formula:
• This test procedure is labeled herein as modified ASTM D6571-01.
• the test procedure may be described as performing a 6 hour compression period and a 10 minute recovery period to obtain a starting conditioned sample upon which a then a 24 hour period is required to obtain a final compressed thickness from which the % compression is computed.
• the starting fabric sample is considered to relate to fabric such as a batting which is typically stored in roll form prior to actual use in the final material such as a portion of a mattress, upholstery, sleeping bag, comforter, etc.
• the fabric as a batting in a mattress when tested according to the State of California test standard TB603 can result in a peak rate of heat release less than 200 kW during the 30 minutes test duration and a total heat release less than 25 MJ within 10 minutes of test start.
• An important property which can be obtained with fabrics of the present invention is an ability of the fabric to be evaluated as soft. It is understood that softness is a subjective term and it will vary from person to person. Also, there is no sharp line between a fabric which is perceived as soft as opposed to not being soft. Also, a fabric perceived as soft such as in use as upholstery may not be perceived as soft as part of a mattress construction.
• a soft fabric has a compression of at least 40% when measured in accordance with modified ASTM D6571-01 as previously described. If higher thermal performance is required, the total basis weight of the cellulose and wool batting can be increased. If higher thermal performance combined with increased structural integrity during the flame resistant test is required, it may be desirable to add a further material to the cellulose fiber and wool.
• these materials are heat resistant and include aramid, especially para-aramid, polybenzazole polybenzimidazole and polyimide. Generally, the material will be present as a fiber.
• the fire resistant fabric will have a density in a range from 0.3 to 6.0 pounds per cubic foot (5 to 96 kilograms per cubic meter) and more preferably a density in a range from 0.3 to 4.3 pounds per cubic foot 5 to 70 kilograms per cubic meter).
• a suitable basis weight is in a range of 3 to 18 ounces per square yard (102 to 610 grams per square meter and more preferably 4 to 12 ounces per square yard (136 to 407 grams per square meter). Basis weight can be measured in accordance with ASTM D6242-98.
• flame resistant fabric is employed as a batting and additional durability or strength is desired, such fabric can be contacted and joined with another fabric such a woven or nonwoven scrim fabric such as by sewing or use of an adhesive.
• binder a copolymer polyester sheath/polyester core fiber having a melting temperature of about 120 0 C and an individual filament denier of 4 dpf (4.4 dtex) and average cut length of 2 inches (51 mm) supplied by Samyang Corporation.
• fire resistant type 33 AP Visil® cellulose fiber having cellulose having an individual filament denier of 3.5 dpf (3.9 dtex) and average cut length of 2 inches (51 mm) available from Sateri Oy.
• aramid poly(paraphenylene terephthalamide) supplied as Kevlar® Type 970 by E. I. du Pont de Nemours and Company having an individual filament denier of 2.25 dpf (2.50 dtex) average cut length of 2 inches (51 mm).
• the fibers used in this invention retain a portion of their fiber weight when heated to high temperature at a specific heating rate.
• This fiber weight was measured using a Model 2950 Thermogravimetric Analyzer (TGA) available from TA Instruments (a division of Waters Corporation) of Newark, Delaware.
• TGA Thermogravimetric Analyzer
• the TGA gives a scan of sample weight loss versus increasing temperature.
• percent weight loss can be measured at any recorded temperature.
• the program profile consists of equilibrating the sample to 50 degrees C, placing the sample in a 500 microliter ceramic cup (PN 952018.910) sample container and ramping the temperature of the air, as measured by a thermocouple placed directly above the lip of the sample container, at 20 degrees C per minute from 50 to 1000 degrees C, using air supplied at 10 ml/minute.
• the testing procedure is as follows.
• the TGA was programmed using the TGA screen on the TA Systems 2900 Controller.
• the sample ID was entered and the planned temperature ramp program of 20 degrees per minute selected.
• the empty sample cup was tared using the tare function of the instrument.
• the fiber sample was cut into approximately 1/16" (0.16 cm) lengths and the sample pan was loosely filled with the sample.
• the sample weight should be in the range of 120 to 60 mg.
• the TGA has a balance therefore the exact weight does not have to be determined beforehand. None of the sample should be outside the pan.
• the filled sample pan was loaded onto the balance wire making sure the thermocouple is close to the top edge of the pan but not touching it.
• the furnace is raised over the pan and the TGA is started. Once the program is complete, the TGA will automatically lower the furnace, remove the sample pan, and go into a cool down mode.
• the TA Systems 2900 Universal Analysis program is then used to analyze and produce the TGA scan for percent weight loss over the range of temperatures.
• Fabrics in the form of battings as set forth in Table 1 were blended using conventional carding/garnet machines and crosslappers that opened and blended the fibers.
• the fabrics were heat set using a through-air oven and then cooled at room temperature.
• Table 2 contains % compression data obtained in accordance with modified ASTM D 6571-01 described above
• Thickness values are in inches (centimeters)
• Sample A was 80% cellulose and 20% binder (i.e. 0% wool).
• Sample D was 40% wool, 40% cellulose and 20% binder
• Sample G was 40% cellulose, 20% binder and 40% aramid
• Sample H was 29% wool, 29% cellulose, 13% binder and 29% aramid (i.e. 50% wool on basis of wool and cellulose)
• Sample A (which did not contain wool or aramid) and Sample H (which did not contain wool but contained aramid) did not reach a minimum compression of at least 40%
• Sample D (which contained wool but did not contain aramid) and Sample H (which contained both wool and aramid) had a compression of 50%.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Nonwoven Fabrics (AREA)
• Woven Fabrics (AREA)
• Treatment Of Fiber Materials (AREA)
• Bedding Items (AREA)
• Mattresses And Other Support Structures For Chairs And Beds (AREA)
• Artificial Filaments (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

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Citations (2)

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• 2005
  • 2005-01-31 US US11/047,211 patent/US20060172649A1/en not_active Abandoned
• 2006
  • 2006-01-20 WO PCT/US2006/002167 patent/WO2006083593A1/en not_active Ceased
  • 2006-01-20 JP JP2007553149A patent/JP2008530378A/ja active Pending
  • 2006-01-20 MX MX2007009002A patent/MX2007009002A/es unknown
  • 2006-01-20 CN CNA2006800109953A patent/CN101155954A/zh active Pending
  • 2006-01-20 CA CA 2596072 patent/CA2596072A1/en not_active Abandoned
  • 2006-01-20 KR KR1020077019804A patent/KR20070100822A/ko not_active Ceased
  • 2006-01-20 EP EP20060719131 patent/EP1846604A1/en not_active Withdrawn
  • 2006-01-20 BR BRPI0606552-0A patent/BRPI0606552A2/pt not_active IP Right Cessation
• 2008
  • 2008-12-08 US US12/329,894 patent/US20090083910A1/en not_active Abandoned

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