Patents by Inventor Robert E. Stidham

Robert E. Stidham 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).

  • Manufacture of tartrate disuccinate/tartrate monosuccinate with enhanced TDS levels
    Patent number: 5015468
    Abstract: Mixtures of tartrate disuccinate and tartrate monosuccinate enriched in the disuccinate species are prepared by reacting isomerically pure D- or L-tartaric acid with maleic anhydride in the presence of sodium hydroxide and calcium hydroxide.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: May 14, 1991
    Assignee: The Procter & Gamble Company
    Inventors: Daniel S. Connor, Robert E. Stidham