Patents by Inventor Wilhelm Schumann

Wilhelm Schumann 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).

  • Polymeric hydrogenation catalysts, the production thereof and their use to promote hydrogenation
    Patent number: 4419490
    Abstract: The invention relates to polymeric soluble hydrogenation catalysts in which a metal of the eighth subgroup of the periodic system is bound by covalent and/or secondary valent bond to a soluble polymer. The hydrogenation catalysts are produced by reacting the selected polymer having a functional group with a metal, metal complex or metal salt wherein the metal is of the eighth subgroup of the periodic table, the reaction taking place in aqueous solution or in solution in an organic solvent. The catalysts of the invention can be used for the catalytic hydrogenation of organic compounds in solution.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: December 6, 1983
    Assignee: Heyl & Co. Chemisch-Pharmazeutische Fabrik
    Inventors: Ernst Bayer, Wilhelm Schumann