Granted Patent
Utility
US 5,320,764 · App. 07/914,165
Multifunctional lubricant additives
Inventors:
Hugo Camenzind, Kay S. Groninger, Miles J. Hutchings
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Jul 14, 1992
Inventors
Hugo Camenzind
Kay S. Groninger
Miles J. Hutchings
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.