Patents by Inventor André Wehmeier

André Wehmeier 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).

  • Highly dispersible precipitated silica
    Patent number: 7855248
    Abstract: The present invention relates to a highly disperse precipitated silica which has a high surface area, to a process for preparing it, and to its use as a tire filler for commercial vehicles, motorbikes, and high-speed vehicles.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: December 21, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Oleg Stenzel, Stefan Uhrlandt, Hans-Detlef Luginsland, André Wehmeier
  • High-surface precipitation silica acids
    Patent number: 7790131
    Abstract: The present invention relates to a highly dispersible silica which has a high surface area, a process to manufacture the aforesaid silica and its use as a tire filler for utility vehicles, motor cycles and high speed vehicles.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: September 7, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Oleg Stenzel, Stefan Uhrlandt, Hans-Detlef Luginsland, André Wehmeier