Patents by Inventor Wolf Krummheuer

Wolf Krummheuer 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).

  • Process for the production of uncoated technical fabrics with low air permeability
    Patent number: 5581856
    Abstract: Uncoated technical fabric is produced in a dense weave with low air permeability. The fabric contains polyamide filament yarns with a hot air shrinkage of 6 to 15% (determined at 160.degree. C.) and has an at least substantially symmetrical fabric construction. The fabric is adjusted to the required air permeability by a treatment in an aqueous bath at 60.degree. to 140.degree. C.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: December 10, 1996
    Assignee: Akzo N.V.
    Inventors: Wolf Krummheuer, Hans A. Graefe, Volker Siejak
  • Uncoated fabric for airbags
    Patent number: 5093163
    Abstract: A heat shrinkable uncoated fabric of synthetic filament yarn for the production of airbags is produced with an at least substantially symmetric fabric contruction. A yarn with a titre of 300-400 dtex is used.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: March 3, 1992
    Assignee: Akzo N.V.
    Inventors: Wolf Krummheuer, Hans A. Graefe, Volker Siejak
  • Resin coated fabric
    Patent number: 4405341
    Abstract: A coated fabric consisting of continuous multifilament threads chemically activated and roughened to improve adhesion, having a fabric density between 26% and 60% and being coated with two layers of a plastics/synthetic resin mixture with different relative weights of the two layers.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: September 20, 1983
    Assignee: Akzona, Incorporated
    Inventors: Juergen Jaschek, Wolf Krummheuer