Patents by Inventor Josef Strehle

Josef Strehle 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 preparation of oxidation products of ethylene copolymers, and their use
    Patent number: 4378998
    Abstract: Low-melting, easily processable and at the same time hard polar waxes are obtained by treating copolymers, which are composed of ethylene and 0.5 to 50% by weight of a monomer containing oxygen-containing groups and have melt indices (MFI 190/2) of between 0.01 and 400 g/10 minutes, in the molten state, dispersed in a dispersing agent which is inert towards oxygen, with oxygen or oxygen-containing gases. Preferably, ethylene/vinyl acetate copolymers are oxidized, and these oxidation products are particularly suitable as the wax component in water-based and/or organic solvent-based polishes and in pastes.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: April 5, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Korbanka, Karl-Heinz Stetter, Gunther Illmann, Rolf Jacob, Otto Malitschek, Josef Strehle