Patents by Inventor Hans H. Stockmann

Hans H. Stockmann 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).

  • Electrophotographic coating compositions having bromine-containing polymer binders
    Patent number: 3932181
    Abstract: Photoconductive coating compositions for application to solid substrates which are to be utilized in electrophotographic operations are described; the resultant photoconductive coatings comprise a layer of photoconductive pigment particles bonded to themselves and to the solid substrate with a binder comprising a novel interpolymer, at least one of whose constituent monomers contains bromine. Novel bromine-containing monomers are also disclosed.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: January 13, 1976
    Assignee: National Starch and Chemical Corporation
    Inventors: Dilip K. Ray-Chaudhuri, Paul C. Georgoudis, Hans H. Stockmann