Patents by Inventor Erwin Winterberg

Erwin Winterberg 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).

  • Roof material for motor vehicles
    Patent number: 5385774
    Abstract: A roof material for motor vehicles includes an upper fabric, a lower fabric and a rubber layer arranged between them. The upper fabric includes polyacrylonitrile warp and filling threads. The warp threads are endless filaments (multifilaments). The upper fabric has a protective, polymeric coating on its top side. The rubber layer includes two rubber layers with an intermediate layer of high-strength material.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 31, 1995
    Assignee: Gebr. Happich GmbH
    Inventors: Johannes Cramer, Erwin Winterberg, Hans Nockemann