Patents by Inventor Rudolf-Jurgen Klee

Rudolf-Jurgen Klee 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 preparing hydroxybiphenyl
    Patent number: 5763717
    Abstract: A description is given of the preparation of hydroxybiphenyl by dehydrogenation of completely or partially hydrogenated precursors using a supported Rh catalyst which additionally contains chromium, manganese and alkali metal and can contain a sulphur compound. The Rh catalyst which can be used according to the invention is prepared from halide-free starting materials. The Rh catalyst is distinguished by a low dependence of the initial selectivity, with the selectivity in the run-in state and the running-in time on the conditions of the reductive pretreatment and requires only short running-in times to reach the optimum state.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: June 9, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Christine Mendoza-Frohn, Jurgen Scharschmidt, Ulrich Notheis, Rudolf Jurgen Klee, Gerhard Darsow
  • Dressing agent for synthetic fibers
    Patent number: 4863478
    Abstract: Improved dressings for synthetic fibers, especially acrylonitrile fibers, comprise an anion-active preparation, a polyethylene dispersion and a dicarboxylic acid semi-ester salt.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: September 5, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Kolbe, Ferdinand Kummeler, Ralf Miessen, Rudolf-Jurgen Klee