Granted Patent
Utility
US 4,741,845 · App. 06/937,261
Lubricant additive mixtures of antimony thioantimonate and antimony trioxide
Inventor:
James P. King
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Dec 3, 1986
Inventor
James P. King
Assignee (at issue)
Pennwalt Corporation
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.