Patents Assigned to Sympatex Technologies GmbH
  • Patent number: 6790926
    Abstract: Claimed is a non-porous, waterproof film having a water vapor permeability of at least 1000 g/m2 day, based on a thermoplastic polyurethane, wherein the polyurethane is composed of a) 40 to 52 wt. % of polyether glycol having an atomic ratio of carbon to oxygen in the range of 2,0 to 4,3, with at least 30 wt. % of the polyurethane being composed of a polyether glycol having an atomic ratio of carbon to oxygen in the range of 2,0 to 2,4, b) 30 to 45 wt. % of polyisocyanate, calculated as 4,4′-diphenyl methane diisocyanate, c) 0,5 to 10 wt. % of araliphatic diol, and d) 5 to 20 wt. % of low-molecular weight chain extender, calculated as 1,4-butane diol, less the amount of araliphatic diol. Also claimed is the use of these films in rainwear, shoes, tents, seats, as mattress covers, as understating, in garments for medical purposes, and for the manufacture thereof of wound dressings.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: September 14, 2004
    Assignee: Sympatex Technologies GmbH
    Inventors: Jozef C. W. Spijkers, Hendricus J. M. Van De Ven, Thomas Mezger, Dirk Bontinck, Luc De Koninck
  • Publication number: 20040159012
    Abstract: A waterproof shoe structure having an exterior upper (1), an interior upper including a waterproof, water vapor permeable functional layer (2a) arranged adjacent to the exterior upper (1) and a lining (2) facing the shoe interior, an insole (4, 4a, 4c) and an outsole (6), wherein the interior upper has a lower end region (2b) that extends at least for the most part beyond the lower end of the exterior upper, and which is joined on the one hand to the exterior upper (1) and on the other hand to the insole (4, 4a, 4c). The lower end region of the interior upper that extends beyond the exterior upper (1) is folded outwards in such a way that the functional layer in the entire end region (2b) is turned back on itself, and the interior upper has a lower edge arising from this folding, that the free end of the outwardly folded interior upper is joined to the exterior upper (1), and that the lower edge of the interior upper is joined to the insole (4, 4a, 4c).
    Type: Application
    Filed: February 19, 2004
    Publication date: August 19, 2004
    Applicant: SYMPATEX TECHNOLOGIES GMBH
    Inventors: Karsten Friedrich Keidel, Liviu Mihai Pavalescu, Paul Edmund Raith, Peter Mugge
  • Patent number: 6769201
    Abstract: Waterproof shoe structure with an exterior upper (1), an interior upper containing at least a waterproof, water vapor permeable functional layer (2) and a lining (3), an insole (4), and an outsole (8). The lower end of the exterior upper (1) and the insole (4) are joined by a seam (5), wherein the functional layer (2) at the lower end of the interior upper extends past the lining (3) and possibly additional layers of the interior upper by a lower portion of the functional layer. The extending portion of the functional layer (2) is joined to the lower end of the exterior upper (1) in a waterproof manner, and that the seam (5) joining the lower end of the exterior upper (1) to the insole (4) is located exclusively in the portion (a) of the lower end of the exterior and interior uppers in which the lower portion of the functional layer is joined to the exterior upper (1) in a waterproof manner.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: August 3, 2004
    Assignee: Sympatex Technologies GmbH
    Inventors: Liviu Mihai Pavelescu, Karsten Keidel
  • Patent number: 6706413
    Abstract: The present invention is a non-porous, breathable membrane of at least polyamide-4,6, with an elongation at rupture of about 250 to about 500% in the longitudinal direction and about 200 to about 500% in the transverse direction. The membrane has a higher heat resistance than a non-porous, breathable membrane made from polyether ester and, if it also contains an antioxidant, passes the oven/watertightness test. If the membrane is produced from a mixture of polyamide-4,6 and about 10 to about 30% by weight polyether amide, the membrane exhibits a surprisingly increased water-vapor permeability. The membrane is usable in the manufacture of thermally protective clothing.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: March 16, 2004
    Assignee: Sympatex Technologies GmbH
    Inventors: Bertram R. Böhringer, Henricus Joannes Maria Van De Ven, Jozef Christiaan Wilhelmus Spijkers
  • Patent number: 6698108
    Abstract: Waterproof, water vapor permeable shoe construction including an exterior upper, a waterproof, water vapor permeable functional-layer upper, a lining upper, and a sole. Both the waterproof, water vapor permeable functional-layer upper and the lining upper are in the shape of a sock and introduced separately into the shoe. The functional-layer upper and lining upper are preferably joined to the exterior upper only at a top opening of the shoe construction through which a foot is inserted. The functional-layer upper can be composed of individual pieces that are joined together by seams that are sealed, or it can be seamless.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: March 2, 2004
    Assignee: Sympatex Technologies GmbH
    Inventors: Liviu Pavelescu, Karsten Keidel, Manfred Haderlein, Harry Van De Ven, John J. Mulcahy
  • Publication number: 20030163880
    Abstract: A method for manufacturing a shoe structure including an exterior upper sewn at a lower end of the exterior upper lower end to an insole and an interior upper including a waterproof, water-vapour permeable functional layer and a lining, the interior upper having in the region of the sole, an inwardly folded end portion which is connected in a waterproof manner to the insole and has a perimetral edge enclosing an opening.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 4, 2003
    Applicant: SYMPATEX TECHNOLOGIES GMBH
    Inventors: Karsten F. Keidel, Liviu-Mihai Pavelescu, Paul E. Raith
  • Publication number: 20030143381
    Abstract: A water-vapor-permeable, water-resistant composite material includes a water-resistant, water-vapor-permeable functional layer with a first and a second side, a material attached to the first side of the functional layer, a plurality of discrete polymer spots forming a discontinuous, lining-producing pattern on the surface of the second side of the functional layer, and a water-vapor-permeable cover layer that is joined at least to the polymer spots. Clothing produced from the water-vapor-permeable, water-resistant composite material includes the features listed above.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 31, 2003
    Applicant: SYMPATEX TECHNOLOGIES GMBH
    Inventors: Joachim Hurten, Volker Schuster
  • Publication number: 20030041474
    Abstract: A shoe structure includes an upper made of an outer material, a waterproof and water vapor permeable functional layer, a lining, an insole, and an injection-molded sole. The upper has an extension made of a porous, permeable material and the insole is joined to the extension of the upper. The functional layer and the lining extend beyond a lower edge of the upper and only partially overlap the extension of the upper. The functional layer is spaced from an edge of the insole and the extension of the upper is penetrated by the material of the sole. A part of the functional layer extending beyond a lower edge of the upper is joined to the material of the sole, and a space between the functional layer and the edge of the insole is filled with the material of the sole as far as the interior of the shoe structure.
    Type: Application
    Filed: July 25, 2002
    Publication date: March 6, 2003
    Applicant: SYMPATEX TECHNOLOGIES GMBH
    Inventors: Karsten Friedrich Keidel, Liviu-Mihai Pavelescu, Paul-Edmund Raith
  • Publication number: 20020155307
    Abstract: The present invention is a non-porous, breathable membrane of at least polyamide-4,6, with an elongation at rupture of about 250 to about 500% in the longitudinal direction and about 200 to about 500% in the transverse direction. The membrane has a higher heat resistance than a non-porous, breathable membrane made from polyether ester and, if it also contains an antioxidant, passes the oven/watertightness test. If the membrane is produced from a mixture of polyamide-4,6 and about 10 to about 30% by weight polyether amide, the membrane exhibits a surprisingly increased water-vapor permeability. The membrane is usable in the manufacture of thermally protective clothing.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 24, 2002
    Applicant: SYMPATEX TECHNOLOGIES GMBH
    Inventors: Bertram R. Bohringer, Henricus Joannes Maria Van De Ven, Jozef Christiaan Wilhelmus Spijkers
  • Publication number: 20020078593
    Abstract: Waterproof shoe structure with an exterior upper (1), an interior upper containing at least a waterproof, water vapor permeable functional layer (2) and a lining (3), an insole (4), and an outsole (8). The lower end of the exterior upper (1) and the insole (4) are joined by a seam (5), wherein the functional layer (2) at the lower end of the interior upper extends past the lining (3) and possibly additional layers of the interior upper by a lower portion of the functional layer. The extending portion of the functional layer (2) is joined to the lower end of the exterior upper (1) in a waterproof manner, and that the seam (5) joining the lower end of the exterior upper (1) to the insole (4) is located exclusively in the portion (a) of the lower end of the exterior and interior uppers in which the lower portion of the functional layer is joined to the exterior upper (1) in a waterproof manner.
    Type: Application
    Filed: December 18, 2001
    Publication date: June 27, 2002
    Applicant: Sympatex Technologies GmbH
    Inventors: Liviu Mihai Pavelescu, Karsten Keidel
  • Publication number: 20020066210
    Abstract: Waterproof, water vapor permeable shoe construction including an exterior upper, a waterproof, water vapor permeable functional-layer upper, a lining upper, and a sole, characterized in that both the waterproof, water vapor permeable functional-layer upper and the lining upper are in the shape of a sock and introduced separately into the shoe. The functional-layer upper and lining upper are preferably joined to the exterior upper only at a top opening of the shoe construction through which a foot is inserted. The functional-layer upper can be composed of individual pieces that are joined together via seams that are sealed, or it can be seamless.
    Type: Application
    Filed: January 18, 2002
    Publication date: June 6, 2002
    Applicant: Sympatex Technologies GmbH
    Inventors: Liviu Pavelescu, Karsten Keidel, Manfred Haderlein, Harry Van De Ven, John J. Mulcahy
  • Publication number: 20020066212
    Abstract: A waterproof, water vapor permeable shoe having a waterproof, water vapor permeable functional layer, an upper, and a lining. The functional layer may be made from a dispersion of a waterproof, water vapor polymer. The functional layer may only be attached to the lining at the top opening of the shoe.
    Type: Application
    Filed: December 6, 2000
    Publication date: June 6, 2002
    Applicant: Sympatex Technologies GmbH
    Inventors: Liviu Pavelescu, Karsten Keidel, Manfred Haderlein, Harry Van De Ven, John J. Mulcahy
  • Publication number: 20020049020
    Abstract: A water-vapor-permeable, watertight, heat-reflecting flat composite is made by a process of combining a metal layer and a nonporous, water-vapor-permeable, watertight, hydrophilic flat substrate. The process includes at least the three steps of (1) selecting the substrate, (2) pre-cleaning the substrate, and (3) applying the substrate to the metal layer. Such a composite offers protection from heat loss, infrared-based detection, ultraviolet radiation, electro-smog, and static electricity.
    Type: Application
    Filed: August 31, 2001
    Publication date: April 25, 2002
    Applicant: Sympatex Technologies GmbH
    Inventors: Henricus J.M. Van De Ven, Jozef C.W. Spijkers, Karl W. Kopp
  • Patent number: 6174584
    Abstract: A washable cover for mattresses and like objects, that is made from textile material and includes a water vapor permeable, allergen- and waterproof barrier layer, and an outer material. The cover includes at least one additional textile fabric and a voluminous batting at least 3 mm thick. The batting is arranged between the outer material and additional textile fabric. The outer material, batting, and additional textile fabric are joined together at least pointwise by threads. The barrier layer is laminated onto the additional textile fabric at least pointwise after the latter is joined to the outer material and batting.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: January 16, 2001
    Assignees: Rudolf Neu GmbH, Sympatex Technologies GmbH
    Inventors: Rainer Keller, Eugeniusz Maderek