Patents by Inventor Karsten Friedrich Keidel

Karsten Friedrich Keidel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7017284
    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: Grant
    Filed: February 19, 2004
    Date of Patent: March 28, 2006
    Assignee: Sympatex Technologies GmbH
    Inventors: Karsten Friedrich Keidel, Liviu Mihai Pavalescu, Paul Edmund Raith, Peter Mügge
  • Patent number: 6820352
    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: Grant
    Filed: July 25, 2002
    Date of Patent: November 23, 2004
    Assignee: Sympatex Technologies GmbH
    Inventors: Karsten Friedrich Keidel, Liviu-Mihai Pavelescu, Paul Edmund Raith
  • 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
  • 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