GB2439532A - Water absorbing sheet-like material - Google Patents

Water absorbing sheet-like material Download PDF

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Publication number
GB2439532A
GB2439532A GB0711578A GB0711578A GB2439532A GB 2439532 A GB2439532 A GB 2439532A GB 0711578 A GB0711578 A GB 0711578A GB 0711578 A GB0711578 A GB 0711578A GB 2439532 A GB2439532 A GB 2439532A
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GB
United Kingdom
Prior art keywords
layer
fabric
sheet
sheet according
wicking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0711578A
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GB0711578D0 (en
Inventor
Wendy Patricia Barraclough
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB0711578D0 publication Critical patent/GB0711578D0/en
Publication of GB2439532A publication Critical patent/GB2439532A/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D10/00—Pyjamas; Nightdresses
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/02—Bed linen; Blankets; Counterpanes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/02—Bed linen; Blankets; Counterpanes
    • A47G9/0238—Bed linen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/538—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by specific fibre orientation or weave
    • A61F2013/5386—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by specific fibre orientation or weave by the fibre orientation in the z plane or vertical direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2459/00—Nets, e.g. camouflage nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2601/00—Upholstery

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Bedding Items (AREA)

Abstract

A sweat-absorbent, multi-layer sheet includes a first layer 1 comprising a wicking fabric such as a polyester micro-brushed material and a second layer 3 comprising a water-absorbent fabric such as needle felt layer. A third, liquid permeable layer 5 such as polyester-cotton may also be provided which provides support to the second layer. The sheet may be in the form of bedsheet, quilt cover, pillowcase or item of nightwear.

Description

<p>WATER ABSORBING SHEET-LIKE MATERIAL</p>
<p>Field of the invention</p>
<p>This invention relates to sheet-like materials for absorbing water, particularly sweat generated by the body of a user, thereby assisting moisture management and avoiding discomfort otherwise felt by the user.</p>
<p>Background to the invention</p>
<p>Various proposals have been made for the management of sweat or perspiration generated by the body of a user, particularly the heavy night sweats associated with menopausal and post-menopausal women, as well as sweats caused by various medical conditions and as a result of side-effects of various medications.</p>
<p>JP 6316014 discloses a water absorbing/dehumidifying sheet made from a first sheet having a number of fine pores superimposed on a second sheet which is water absorbing and dehumidifying. Sweat generated by a body of a user passes through the fine pores of the first sheet and is absorbed by the second sheet.</p>
<p>The provision of pores in the second sheet is intended to allow sweat to pass through this sheet into contact with the second sheet. However, this is of limited effectiveness since the liquid sweat does not readily pass through the pores of the first sheet to make contact with the second sheet.</p>
<p>Statement of the invention</p>
<p>According to the present invention there is provided a sweat-absorbent, multi-layer sheet including a first layer comprising a wicking fabric and a second layer comprising a water absorbent fabric. Preferably the sheet includes a third fabric layer which provides support to the second layer.</p>
<p>A sheet of the present invention may have a variety of uses, for instance as a bed sheet, a quilt cover, a pillowcase or an item of nightwear such as a nightdress.</p>
<p>The teim "wicking fabric", as used herein, means a fabric which passes liquid from one surface to the other by means of capillary action, which is the ability to draw liquid against the force of gravity. This occurs when the adhesive intermolecular forces between the liquid and solid are stronger than the cohesive intermolecular forces within the liquid.</p>
<p>The wicking fabric comprises micro-fibres which are normally packed together and which provide a surface such that when liquid droplets contact that surface they are wicked swiftly from that surface down the parallel gaps between the fibres to the other opposed surface to the fabric.</p>
<p>The wicking fabric can be any suitable fabric having wicking properties, an example of which is a polyester micro-brushed material, a particular example being 100% Polytricot micro-brushed fabric.</p>
<p>The water absorbent layer may be any suitable fabric, an example being needle felt which has a strong water absorbing character.</p>
<p>Finally, where the sheet of the invention has a third fabric layer, this may be any suitable support layer such as a Polycotton material. The third layer is permeable to liquid allowing the absorbent material at least partially to be removed from the sheet by passing through the third layer.</p>
<p>Brief description of the drawings</p>
<p>The accompanying drawings are as follows: Figure 1 is a diagrammatic cross-sectional view of a multi-layer sheet of the present invention; Figure 2 is a detailed cross-sectional view of the wicking fabric of the sheet of Figure 1; Figure 3 isa further detailed view of part of the sheet of Figure 1; Figure 4 shows again the sheet of Figure 1 after fluid absorbance has occurred; Figure 5 shows graphs of wicking height (widthwise) versus time for fabric of use in the present invention and a comparative fabric; and Figure 6 shows wicking height (lengthwise) versus time for the same fabrics as Figure 6.</p>
<p>Detailed description of the invention</p>
<p>The present invention will now be described, by way of example, and with reference to the accompanying drawings A sweat-absorbent multi-layer sheet is formed from three fabric layers. A first layer comprises a wicking fabric formed from 100% Polytricot micro-brushed. A second layer from PA 150 WT needle felt and a third support layer from 9672 Polycotton.</p>
<p>First and third layers are connected together by stitching extending around the edges thereof. The third support layer is quilted to the second layer so that the entire sheet retains its integrity and may be used, for instance, as a bed sheet with the first layer uppermost.</p>
<p>The mode of action of the bed sheet in managing sweat from the body of a user is illustrated in the accompanying drawings. Figure 1 is a cross-section through the sheet material showing the wicking fabric I, the intermediate absorbent layer 3 and the support fabric 5. The wicking fabric 1 and the upper surface of absorbent layer 3 are shown in more detail in Figure 2. Droplets of sweat 7 can be seen descending towards the upper surface of the wicking fabric. Once they have contacted the wicking fabric then they are caused to wick downwardly as illustrated at 9 until they reach the bottom of layer 1 and make contact with the top of layer 3. The strong absorbent action of layer 3 causes the liquid to pass from layer 1 into layer 3 and be retained therein.</p>
<p>Figure 3 shows the accumulation of several droplets of sweat, which has wicked through layer I and is in the process of passing into absorbent layer 3. Finally, Figure 4 shows the presence of the absorbed liquid 11 in the absorbent layer 3.</p>
<p>A comparative test was carried out to examine the wicking characteristics of materials used in the present invention and comparative materials, in particular the wicking characteristics of a composite wicking pad (comprising a multi-layer sheet of the invention having wicking fabric (100% polyester), needle felt and a polyester-cotton bottom fabric) were compared with those of a printed sheeting fabric.</p>
<p>Table 1 shows the wicking distances (both length and width) against time for the printed sheeting fabric and Table 2 shows corresponding data for the wicking fabric. These results are also shown in Figure 5 and 6.</p>
<p>TABLE 1</p>
<p>Printed sheeting fabric: ________________________ Wicking distance in mm Time minutes Fabric Length Fabric Width 34 29 2 46 38 3 59 46 4 63 53 72 58 95 77 116 92 129 103 137 III 144 120</p>
<p>TABLE 2</p>
<p>Wicking fabric: _________________________ Wicking distance in mm Time minutes Fabric Length Fabric Width 1 57 55 2 72 70 3 79 76 4 88 85 93 91 124 113 131 128 146 145 150 150</p>
<p>--</p>
<p>The wicking rate is considerably faster with the wicking fabric than with the sheeting fabric. Maximum wicking height (150 mm) is achieved by the wicking fabric in 25 minutes but it is not reached on the sheeting fabric.</p>
<p>The overall moisture absorption on the composite is 297% of its matter as compared to 92% for the sheeting.</p>
<p>The liquid absorption time for 5 ml of fluid was much quicker for the composite sample (2.5 seconds) than for the sheeting (16 seconds). Furthermore, more wet-back (size of wet area and mass) occurred with the sheeting fabric than with the composite. These results are shown in Tables 3 and 4.</p>
<p>TABLE 3</p>
<p>Liquid Absorbency Time and Wet Back Printed sheeting fabric Time for complete Maximum spread length Wet-back mass penetration of liquid of liquid on filter paper ie (wet mass -dry mass) of filter paper s mm 16 12.5 1,425 2 16 12.5 1.572 Mean -16 12.5 1.499</p>
<p>TABLE 4</p>
<p>Liquid Absorbency Time and Wet Back Composite wicking pad Time for complete Maximum spread length Wet-back mass penetration of liquid of liquid on filter paper Ic (wet mass -dry mass) of filter paper s mm 1 3 9.8 0.765 2 3 10.60 0.837 Mean -2.5 10.2 0.801</p>

Claims (1)

  1. <p>CLAIMS</p>
    <p>1. A sweat-absorbent multi-layer sheet including a first layer comprising a wicking fabric and a second layer comprising a water absorbent fabric.</p>
    <p>2. A sheet according to Claim I and further including a third fabric layer which provides support to the second layer.</p>
    <p>3. A sheet according to Claim 1, wherein the wicking fabric is a polyester micro-brushed material.</p>
    <p>4. A sheet according to Claim 3, wherein the micro-brushed material is a 100% Polytricot micro-brushed fabric.</p>
    <p>5. A sheet according to any of the preceding claims, wherein the water absorbent layer is a needle felt layer.</p>
    <p>6. A sheet according to any of the preceding claims and having a third fabric layer which is a Polycotton material.</p>
    <p>7.. A sheet according to any of claims 1 to5, wherein the sheet has a third layer which is permeable to liquid.</p>
    <p>8. A sheet according to any of the preceding claims in the form of a bedsheet, quilt cover, a pillowcase or an item of nightwear.</p>
    <p>9. A sheet according to any of the preceding claims, wherein the first layer is I 00% polyester and the second layer is needle felt.</p>
    <p>10. A sheet according to Claim 9, wherein the sheet has a third layer which is a polyester-cotton layer.</p>
    <p>11. A sweat-absorbent multi-layer sheet substantially as described herein with reference to the accompanying drawings.</p>
    <p>12. A sheet according to any of Claims I to 10 and substantially as herein described.</p>
GB0711578A 2006-06-14 2007-06-14 Water absorbing sheet-like material Withdrawn GB2439532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0611748.5A GB0611748D0 (en) 2006-06-14 2006-06-14 Water absorbing sheet-like material

Publications (2)

Publication Number Publication Date
GB0711578D0 GB0711578D0 (en) 2007-07-25
GB2439532A true GB2439532A (en) 2008-01-02

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Family Applications (2)

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GBGB0611748.5A Ceased GB0611748D0 (en) 2006-06-14 2006-06-14 Water absorbing sheet-like material
GB0711578A Withdrawn GB2439532A (en) 2006-06-14 2007-06-14 Water absorbing sheet-like material

Family Applications Before (1)

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GBGB0611748.5A Ceased GB0611748D0 (en) 2006-06-14 2006-06-14 Water absorbing sheet-like material

Country Status (2)

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GB (2) GB0611748D0 (en)
WO (1) WO2007144651A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011067720A1 (en) 2009-12-01 2011-06-09 Gabriele Zecca System for receiving a user

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501025A (en) * 1983-07-28 1985-02-26 Lawrence Kuznetz Composite fabric for sportswear
US4530873A (en) * 1981-10-15 1985-07-23 Sakashita Co., Ltd. Sweat-absorbent textile fabric
US4537822A (en) * 1983-02-08 1985-08-27 Toyo Boseki Kabushiki Kaisha Three-layered fabric material
US4775575A (en) * 1986-08-18 1988-10-04 Tang Thomas L C Insulative textile fabric
EP0429802A2 (en) * 1989-11-30 1991-06-05 Guilford Mills, Inc. Textile fabric with opposed absorbent and non-absorbent layers and method of fabricating same
FR2716209A3 (en) * 1994-02-16 1995-08-18 Patissier Max Fabric for absorbing human perspiration

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217782A (en) * 1991-11-12 1993-06-08 Moretz Herbert L Multi-layer moisture management fabric
US5249320A (en) * 1991-11-12 1993-10-05 Moretz Herbert L Moisture-managing bed pad and bed sheet
US5902757A (en) * 1997-05-10 1999-05-11 Standard Textile Co., Inc. Stitch bonded fabric and fluid-retaining fabric made therewith
CA2337915A1 (en) * 1998-07-22 2000-02-03 Millennium Ground Control, Inc. Textile including super absorbent fibers
DE19952614A1 (en) * 1999-11-02 2001-08-30 Helmut F Grewe Flexible and elastic composite and textile material use in e.g. bed linen, has high rebound force
US6312051B1 (en) * 1999-12-14 2001-11-06 Christina L. Adams Moisture dispersing seat cover for a wheelchair
CA2370620A1 (en) * 2002-01-28 2003-07-28 Murray I. Levine Perspiration wicking and absorbing sports shirt
WO2004089614A2 (en) * 2003-04-12 2004-10-21 Lightex Limited Wicking, breathable fabrics
US7337749B2 (en) * 2004-10-13 2008-03-04 Christoper Vicari Washable absorbent article and uses therefor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530873A (en) * 1981-10-15 1985-07-23 Sakashita Co., Ltd. Sweat-absorbent textile fabric
US4537822A (en) * 1983-02-08 1985-08-27 Toyo Boseki Kabushiki Kaisha Three-layered fabric material
US4501025A (en) * 1983-07-28 1985-02-26 Lawrence Kuznetz Composite fabric for sportswear
US4775575A (en) * 1986-08-18 1988-10-04 Tang Thomas L C Insulative textile fabric
EP0429802A2 (en) * 1989-11-30 1991-06-05 Guilford Mills, Inc. Textile fabric with opposed absorbent and non-absorbent layers and method of fabricating same
FR2716209A3 (en) * 1994-02-16 1995-08-18 Patissier Max Fabric for absorbing human perspiration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011067720A1 (en) 2009-12-01 2011-06-09 Gabriele Zecca System for receiving a user
US9119476B2 (en) 2009-12-01 2015-09-01 Synergy Business & Finanza Societa′ A Responsabilita′ Limitata System for receiving a user

Also Published As

Publication number Publication date
GB0611748D0 (en) 2006-07-26
WO2007144651A1 (en) 2007-12-21
GB0711578D0 (en) 2007-07-25

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