Granted Patent
Utility
US 5,037,568 · App. 07/522,630
Lubricant compositions
Inventors:
Robert M. O'Neil, Hugo Camenzind, Kay S. Groninger, John David Payne
Patented Case
View Patent ↗
Granted: Aug 6, 1991
Filed: May 14, 1990
Inventors
Robert M. O'Neil
Hugo Camenzind
Kay S. Groninger
John David Payne
Assignee (at issue)
Ciba-Geigy
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.