Patents by Inventor Don Keith Worster

Don Keith Worster 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).

  • Color improvement of phosphate esters
    Patent number: 3931366
    Abstract: A method for decolorizing and stabilizing alkylphenyl esters of phosphoric acid which comprises the in situ addition of an effective amount of PCl.sub.3 to the POCL.sub.3 reacted with an alkyl phenol so as to produce a decolorized and stabilized phosphate ester.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 6, 1976
    Assignee: Stauffer Chemical Company
    Inventors: Silvio L. Giolito, Don Keith Worster
  • Color improvement of phosphate esters
    Patent number: 3931367
    Abstract: A method for decolorizing and stabilizing alkylphenyl esters of phosphoric acid which comprises contacting the esters with an effective amount of a stannous fatty acid salt for a sufficient length of time to decolorize and stabilize the esters against subsequent color formation.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 6, 1976
    Assignee: Stauffer Chemical Company
    Inventors: Silvio L. Giolito, Don Keith Worster