Patents by Inventor Andrei S. Karpov

Andrei S. Karpov 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: 7662227
    Abstract: The present invention relates to compounds on apatite basis, having the general formula M5 (A04)3X wherein X is situated in the hexagonal channels of the apatite structure and includes Cu-atoms, processes for the preparation thereof as well as applications of these compounds. The compounds presented herein are particularly useful as pigments.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 16, 2010
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Pavel E. Kazin, Andrei S. Karpov, Martin Jansen
  • Patent number: 7481876
    Abstract: The present invention relates to compounds on apatite basis, having the general formula M5 (AO4)3X wherein X is situated in the hexagonal channels of the apatite structure and includes Cu-atoms, processes for the preparation thereof as well as applications of these compounds. The compounds presented herein are particularly useful as pigments.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 27, 2009
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften E.V.
    Inventors: Pavel E. Kazin, Andrei S. Karpov, Martin Jansen