Patents by Inventor Randall Brian Hall

Randall Brian Hall 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).

  • Substantially uncolored detergent products containing coloring materials
    Patent number: 3931037
    Abstract: Substantially uncolored detergent products containing coloring materials are prepared by mixing the coloring materials in a dry particulate form with a granular material to form a composition to be incorporated in a granular detergent product. With continuous mixing, water or other liquid materials are sprayed on the mixture containing the coloring material to form substantially uncolored agglomerated granules.
    Type: Grant
    Filed: November 1, 1973
    Date of Patent: January 6, 1976
    Assignee: The Procter & Gamble Company
    Inventor: Randall Brian Hall