Granted Patent
Utility
US 4,400,282 · App. 06/216,140
Lubricating oils containing quaternary ammonium thiomolybdates
Inventors:
Gary M. Singerman, Yumi P. Ryu, James R. Anglin
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Dec 15, 1980
Inventors
Gary M. Singerman
Yumi P. Ryu
James R. Anglin
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.