Patents by Inventor Peter Birken

Peter Birken 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).

  • Device for the production of a multicomponent yarn composed of at least two synthetic polymer components
    Patent number: 4396366
    Abstract: A multi-component filament consisting of at least two polymer components and having a cross-section in which a matrix component separates several peripherally arranged segments of one or more segment components from each other, and a process for the production of such matrix/segment filaments, wherein the segment component is injected into the matrix component and fed to the spinneret opening in a combined stream with a plurality of segment components separated by the matrix. The multicomponent filament can be drawn to obtain individual microfilaments of less than 1 dtex after splitting, e.g. by false twist texturing.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: August 2, 1983
    Assignee: Akzona Incorporated
    Inventors: Erich Kessler, Peter Birken
  • Process for the production of a multicomponent yarn composed of at least two synthetic polymer components
    Patent number: 4381274
    Abstract: A multi-component filament consisting of at least two polymer components and having a cross-section in which a matrix component separates several peripherally arranged segments of one or more segment components from each other, and a process for the production of such matrix/segment filaments, wherein the segment component is injected into the matrix component and fed to the spinneret opening in a combined stream with a plurality of segment components separated by the matrix. The multicomponent filament can be drawn to obtain individual microfilaments of less than 1 dtex after splitting, e.g. by false twist texturing.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: April 26, 1983
    Assignee: Akzona Incorporated
    Inventors: Erich Kessler, Peter Birken