Granted Patent
Utility
US 4,406,801 · App. 06/397,606
Grease compositions containing quaternary phosphonium thiostannates
Inventors:
Judith B. Onopchenko, Gary M. Singerman, Raynor T. Sebulsky
Patented Case
View Patent ↗
Granted: Sep 27, 1983
Filed: Jul 12, 1982
Inventors
Judith B. Onopchenko
Gary M. Singerman
Raynor T. Sebulsky
Assignee (at issue)
Gulf Research & Development Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.