Patents by Inventor Helmut Fehl

Helmut Fehl 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).

  • Three-dimensional tread sipes and mold blade for forming three-dimensional tread sipes
    Publication number: 20060027295
    Abstract: Both a mold blade for forming sipes and the sipe so formed in a tire tread element have three-dimensional portions. In the formed sipe, the three-dimensional portion creates a constant interlocking of the opposing sipe faces. The blade and the sipe have two radially adjacent rows of projections, wherein the projections are separated by a planar section, the planar section having a defined length and width.
    Type: Application
    Filed: May 19, 2005
    Publication date: February 9, 2006
    Inventors: Oliver Knispel, Thomas Hirsch, Helmut Fehl, Saburo Miyabe
  • Tire tread
    Patent number: D558125
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: December 25, 2007
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Saburo Miyabe, Christian Windisch, Helmut Fehl, Yasuo Wada, Osamu Abe
  • Tire Tread
    Patent number: D491517
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: June 15, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Tadao Matsumoto, Nobuaki Minami, Saburo Miyabe, Helmut Fehl, Christian Windisch
  • Tire tread
    Patent number: D491518
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: June 15, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Saburo Miyabe, Helmut Fehl, Christian Windisch, Wako Iwamura, Tadao Matsumoto, Nobuaki Minami