Patents by Inventor Robert B. Doan

Robert B. Doan 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).

  • Detergent-containing cleansing article
    Patent number: 4145302
    Abstract: Detergent pads having rapid detergent release and longer lasting detergency properties are presented. The detergent pads are made by incorporating into a suitable cleansing article capable of retaining dry detergent at least one sodium, lithium, potassium, ammonium or magnesium sulfonate or sulfate ester and at least one calcium or barium sulfonate or sulfate ester.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: March 20, 1979
    Assignee: Atlantic Richfield Company
    Inventor: Robert B. Doan