Patents by Inventor Josef Witte

Josef Witte 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 polymerisation of cyclooctadiene
    Patent number: 3933778
    Abstract: Ring opening polymerisation of cyclooctadiene-(1,5) (COD) optionally in an inert organic solvent on a catalyst ofA. a tungsten salt,B. a halogenated alcohol in which the halogen and OH group are attached to adjacent carbon atoms, and/or an epoxide and/or a halogenated phenol, andC. an organo aluminium compound and/or an aluminium halide.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: January 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gottfried Pampus, Gunther Lehnert, Josef Witte