Patents by Inventor Holger Berkmann

Holger Berkmann 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).

  • Tire tread
    Patent number: D627706
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: November 23, 2010
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Ulrich Behr, Holger Berkmann, Markus Fischer
  • Tire tread
    Patent number: D660783
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 29, 2012
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Ulrich Behr, Holger Berkmann, Markus Fischer