Patents by Inventor by Anna Elisabeth Wick nee Sommer, heiress

by Anna Elisabeth Wick nee Sommer, heiress 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).

  • Process for the preparation of easily dispersible and stable molybdate red and chrome yellow pigments
    Patent number: 3962173
    Abstract: The dispersibility of molybdate red and chrome yellow pigments is improved by precipitating onto the pigment stabilized by silicium dioxide, aluminum oxide and/or antimony trioxide a mono-, di- or triamine having one aliphatic chain of 10 to 20 carbon atoms and adding to the so-obtained dispersion a water-dilutable lacquer binding agent.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: June 8, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Wick, deceased, by Anna Elisabeth Wick nee Sommer, heiress