Patents by Inventor Harry Orttmann

Harry Orttmann 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).

  • Granular preparation of vat dyestuffs and/or disperse dyestuffs
    Patent number: 4285692
    Abstract: Process for the production of granular mixtures of vat dyestuffs and/or disperse dyestuffs, characterized in that liquid or pasty, finished formulations of two or more vat dyestuffs and/or disperse dyestuffs are spray-dried together to form granules.
    Type: Grant
    Filed: October 4, 1979
    Date of Patent: August 25, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Willy Schiwy, Jurgen Schulze, Ferdinand Hummes, Peter Schulze, Reinhold Hornle, Hans-Heinz Molls, Harry Orttmann