Patents by Inventor William Platt Lewis

William Platt Lewis 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).

  • Apparatus and process for manufacture of variegated soap bars
    Patent number: 4092388
    Abstract: In manufacture of variegated soap bars, noodles are choke fed into the final plodder through an opening communicating essentially only with a portion of the worm of the plodder which turns downwardly.
    Type: Grant
    Filed: November 3, 1976
    Date of Patent: May 30, 1978
    Assignee: The Procter & Gamble Company
    Inventor: William Platt Lewis