Patents by Inventor Richard B. Knohl

Richard B. Knohl 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).

  • Hair bleaching compositions containing an arginine compound
    Patent number: 3997659
    Abstract: Hair bleaching compositions containing arginine or various proteins or polypeptides having a high arginine content, a peroxide compound and a bleaching accelerator as essential components.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: December 14, 1976
    Assignee: The Procter & Gamble Company
    Inventors: Richard B. Knohl, Eugene Zeffren