Patents by Inventor Rainer Raab

Rainer Raab 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 production of polyisocyanates with a biuret structure
    Patent number: 3976622
    Abstract: Comparatively low viscosity biuret containing polyisocyanates are produced by reacting diisocyanates and biuretizing agents in proportions corresponding to a molar ratio of diisocyanate to monofunctional biuretizing agent of at least 11 : 1.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: August 24, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kuno Wagner, Johannes Eimer, Joachim Zirner, Rainer Raab, Dietrich Liebsch