Patents by Inventor Frances I. Ratka

Frances I. Ratka 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).

  • Multiply promoted MN-SB oxide catalysts
    Patent number: 4960921
    Abstract: Certain novel multiply promoted Mn-Sb oxides are superior catalysts for the ammoxidation of olefins to the corresponding unsaturated nitriles, the selective oxidation of olefins to unsaturated aldehydes and acids, and the oxydehydrogenation of olefins to diolefins.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: October 2, 1990
    Assignee: The Standard Oil Company
    Inventors: Dev. D. Suresh, Robert K. Grasselli, Frances I. Ratka, James F. Brazdil
  • Multiply promoted Sn/Sb oxide catalysts
    Patent number: 4532083
    Abstract: Certain multiply promoted Sn/Sb oxides are superior catalysts for the ammoxidation of olefins to the corresponding unsaturated nitriles, the selective oxidation of olefins to unsaturated aldehydes and acids, and the oxydehydrogenation of olefins to diolefins.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: July 30, 1985
    Assignee: The Standard Oil Company
    Inventors: Dev D. Suresh, Robert K. Grasselli, James F. Brazdil, Frances I. Ratka
  • Process of ammoxidation of olefins in the presence of multiply promoted Sn-Sb oxide catalysts
    Patent number: 4339394
    Abstract: Certain multiply promoted Sn-Sb oxides are superior catalysts for the ammoxidation of olefins to the corresponding unsaturated nitriles, the selective oxidation of olefins to unsaturated aldehydes and acids, and the oxydehydrogenation of olefins to diolefins.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: July 13, 1982
    Assignee: The Standard Oil Co.
    Inventors: Robert K. Grasselli, Dev D. Suresh, James F. Brazdil, Frances I. Ratka
  • Multiply promoted Sn-Sb oxide catalysts
    Patent number: 4316855
    Abstract: Certain multiply promoted Sn-Sb oxides are superior catalysts for the ammoxidation of olefins to the corresponding unsaturated nitriles, the selective oxidation of olefins to unsaturated aldehydes and acids, and the oxydehydrogenation of olefins to diolefins.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: February 23, 1982
    Assignee: The Standard Oil Co.
    Inventors: Robert K. Grasselli, Dev D. Suresh, James F. Brazdil, Frances I. Ratka