Patents by Inventor Weicheng Wu

Weicheng Wu 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).

  • Patent number: 8658816
    Abstract: The present invention relates to precipitated silicic acids, which have a particularly narrow particle size distribution in combination with a special pore size distribution, to a method for the production thereof, and to the use thereof as a filler for rubber mixtures.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 25, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Andre Wehmeier, Oleg Stenzel, Weicheng Wu, Christian Goetz, Werner Niedermeier, Marinus Haddeman, Anke Blume
  • Publication number: 20110021801
    Abstract: The present invention relates to precipitated silicic acids, which have a particularly narrow particle size distribution in combination with a special pore size distribution, to a method for the production thereof, and to the use thereof as a filler for rubber mixtures.
    Type: Application
    Filed: March 19, 2009
    Publication date: January 27, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Andre Wehmeier, Oleg Stenzel, Weicheng Wu, Christian Goetz, Werner Niedermeier, Marinus Haddeman, Anke Blume
  • Patent number: 7445864
    Abstract: The present invention relates to functionalized polyazoles comprising recurring imidazole units of the general formula where the radicals Ar, Ar1 and Ar2 are tetravalent, divalent or trivalent aromatic or heteroaromatic groups, Y is a bond or a group having from 1 to 20 carbon atoms, v is an integer from 1 to 10 and Z is a group of the general formula where R1 and R2 are each, independently of one another, a hydrogen atom or a group having from 1 to 20 carbon atoms, characterized in that the polyazole is soluble in organic solvents. Furthermore, the present invention relates to intermediates and to a process for preparing the polyazoles. Furthermore, the present invention describes polymer electrolyte membranes and fuel cells in which the polyazoles of the invention are present.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: November 4, 2008
    Assignee: BASF Fuel Cell GmbH
    Inventors: Klaus Muellen, Markus Klapper, Vesselin Sinigersky, Weicheng Wu, Oemer Uensal, Jochen Baurmeister