Patents by Inventor Dorothy P. Carter

Dorothy P. Carter 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).

  • Preparation of zirconium oxychloride
    Patent number: 4256463
    Abstract: A method of crystallizing zirconium or hafnium oxychloride to remove metallic impurities and phosphorus by maintaining the normality of the mother liquor in which the zirconium or hafnium tetrachloride is dissolved.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: March 17, 1981
    Assignee: Teledyne Industries, Inc.
    Inventor: Dorothy P. Carter
  • Removal of 3-mercapto-4-methyl-2-pentanone from zirconium/hafnium separation processes
    Patent number: 4202862
    Abstract: A method of essentially preventing the formation of 3-mercapto-4-methyl-2-pentanone by selectively controlling an ammonium thiocyanate-methyl isobutyl ketone regeneration system by maintaining the pH in the range of 4 to 9, and the temperature below 150.degree. F.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: May 13, 1980
    Assignee: Teledyne Industries, Inc.
    Inventors: Lawrence J. Jacoby, Richard A. Rosenau, Dorothy P. Carter, Ralph H. Nielsen, Kenneth C. Ash