Patents by Inventor Hans Peter Simson

Hans Peter Simson 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).

  • Pigment compositions in paste or powder form for use in printing inks
    Patent number: 3950288
    Abstract: A pigment compositon in powder or paste form, which comprises, as a preparation agent, a mixture consisting of (a) an alkyd resin having a high oil content, (b) a hydrocarbon resin, (c) a mineral oil boiling between 240.degree. and 320.degree.C, the ratio of component (a) to component (b) being from 1 : 1 to 1 : 1.5 and that of components (a)+(b) to component (c) varying from 4 : 1 to 0.7 : 1. This pigment composition is used in printing inks.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: April 13, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Willy Herbst, Albert Rudolphy, Hans Peter Simson