Patents by Inventor Roland P. Duke

Roland P. Duke 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).

  • Patent number: 5409640
    Abstract: A personal cleansing product comprising:(a) from about 0.1% to about 20% of anionic surfactant,(b) from about 0.1% to about 20% of amphoteric surfactant,(c) from about 0.5% to about 25% of a vegetable oil adduct and,(d) water.The vegetable oil adduct can be made by Dies-Alder addition of a conjugated, elaidinized form of the vegetable oil with acrylic acid, fumaric acid or maleic anhydride. The preferred adduct is maleated soybean oil. The compositions provide excellent in-use and efficacy benefits including cleansing and lathering as well as improved mildness and skin conditioning.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: April 25, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Michel J. Giret, Anne Langlois, Roland P. Duke
  • Patent number: 4261851
    Abstract: A detergent composition for personal use such as skin cleansing or care of the hair, comprising at least two surfactants, one being of a particular nonionic type and another being of a different type such as an amphoteric/anionic surfactant. The nonionic surfactant has a thickening effect and is typified by diabasic and tribasic acid reaction products of alkoxylated polyol fatty esters.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: April 14, 1981
    Assignee: Johnson & Johnson Products, Inc.
    Inventor: Roland P. Duke