Patents by Inventor Robert Tanck

Robert Tanck 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).

  • Compositions of pyrithione metal salts and undecylenic acid alkylolamide derivatives
    Patent number: 4307089
    Abstract: Antimicrobial compositions useful in the preparation of cosmetic formulations, including preparations effective for the treatment of dandruff, are provided. The antimicrobial compositions of the invention consist of a pyrithione compound in combination with an undecylenic acid monoalkylolamide sulfosuccinate half ester.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: December 22, 1981
    Assignee: Rewo Chemische Werke GmbH
    Inventors: Wilhelm Melloh, Robert Tanck