Patents by Inventor Judith B. Onopchenko

Judith B. Onopchenko 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).

  • Quaternary phosphonium thiostannates
    Patent number: 4462935
    Abstract: Novel quaternary phosphonium tetrathiostannates and quaternary phosphonium hexathiodistannates are prepared by the reaction of a quaternary phosphonium salt with a tetrathiostannate or a hexathiodistannate salt.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: July 31, 1984
    Assignee: Gulf Research & Development Company
    Inventors: Judith B. Onopchenko, Gary M. Singerman, Raynor T. Sebulsky
  • Grease compositions containing quaternary phosphonium thiostannates
    Patent number: 4406801
    Abstract: A grease composition having improved antifriction properties and improved extreme pressure properties comprising a thickened hydrocarbon lubricating oil, calcium carbonate and a novel quaternary phosphonium thiostannate, for example, hexadecyltri-n-butylphosphonium tetrathiostannate.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: September 27, 1983
    Assignee: Gulf Research & Development Company
    Inventors: Judith B. Onopchenko, Gary M. Singerman, Raynor T. Sebulsky