Patents by Inventor Theodor Hild

Theodor Hild 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 dyestuff preparations based on polyvinylalcohol as the carrier
    Patent number: 3967922
    Abstract: Pulverulent or granular dyestuff preparations containing water-soluble dyestuffs and polyvinyl alcohol are suitable for the preparation of concentrated dyestuff solutions in water, water-soluble organic solvents or in mixtures thereof.
    Type: Grant
    Filed: August 8, 1974
    Date of Patent: July 6, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlheinz Wolf, Reinhold Hornle, Hans Kunzelmann, Theodor Hild