Patents by Inventor Peter Ringe

Peter Ringe 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).

  • Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3
    Patent number: 4617061
    Abstract: Yellow to orange-red bismuth oxide-chromium oxide mixed phase pigments having a specific surface from about 1 to 10 m.sup.2 /g and the composition Bi.sub.2-x Cr.sub.x O.sub.3 wherein x is from about 0.05 to 0.5 are produced by mixing the appropriate quantities of finely disperse bismuth-(III)-- and chromium-III-- or chromium-(VI)-compounds, calcining the mixture in air at a temperature from about 500.degree. to 800.degree. C. and subsequently grinding. The products are suitable for pigmenting lacquers, plastics and dispersion dyes.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: October 14, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Kohler, Peter Ringe, Heinrich Heine
  • Mixed phases having the composition Bi.sub.2-x Cr.sub.x O.sub.3 and a process for their production
    Patent number: 4529448
    Abstract: Yellow to orange-red bismuth oxide-chromium oxide mixed phase pigments having a specific surface from about 1 to 10 m.sup.2 /g and the composition Bi.sub.2-x Cr.sub.x O.sub.3 wherein x is from about 0.05 to 0.5 are produced by mixing the appropriate quantities of finely disperse bismuth-(III)- and chromium-(III)- or chromium-(VI)-compounds, calcining the mixture in air at a temperature from about 500.degree. to 800.degree. C. and subsequently grinding. The products are suitable for pigmenting lacquers, plastics and dispersion dyes.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: July 16, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Peter Kohler, Peter Ringe, Heinrich Heine