Patents by Inventor Wolfgang Lucke

Wolfgang Lucke 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).

  • Stable, phenolic modified hydrocarbon resins for leucopigments
    Patent number: 4598138
    Abstract: Stable phenolic-modified hydrocarbon resins with an OH number which is 4.5 or greater are resonably priced and toxicologically generally regarded as safe resins for the development of leucopigments, especially for the development of colors in pressure sensitive recording materials. The softening point may be varied by copolymerization with multivalent phenolic compounds and vinyl phenol within the range of 70.degree.-90.degree. C.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: July 1, 1986
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Wolfgang Lucke, Herbert Beneke, Peter Staglich