Patents by Inventor Reinhold Rudisch

Reinhold Rudisch 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).

  • Modified chromium oxide pigment
    Patent number: 3960590
    Abstract: Chromium oxide pigments intimately admixed with an alkoxylated alkyl sulphonamide to obtain a pigment having a low degree of flocculation.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: June 1, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Birger Knickel, Siegfried Keifer, Hermann Perrey, Hans Rudolph, Hans Jurgen Rosenkranz, Reinhold Rudisch