Patents by Inventor Werner Pasche

Werner Pasche 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 preparing organic pigments of high tinctorial strength and grain softness
    Patent number: 4156617
    Abstract: An improved process for preparing an organic pigment having a high tinctorial strength by heating a crude organic pigment as an aqueous suspension having a consistency suitable for being pumped, to a temperature of from 80.degree. to 300.degree. C. and for a period of from 10 seconds to 20 minutes in a continuously operating flow apparatus which is shaped as a heat exchanger provided with moving internal elements.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: May 29, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Reinhold Deubel, Erich Dietz, Werner Pasche, Rolf Staal