Granted Patent
Utility
US 5,182,041 · App. 07/620,688
Dispersant - anti-oxidant additive and lubricating oil composition containing same
Inventors:
Nicholas Benfarmeo, Theodore E. Nalesnik
Patented Case
View Patent ↗
Granted: Jan 26, 1993
Filed: Dec 3, 1990
Inventors
Nicholas Benfarmeo
Theodore E. Nalesnik
Assignee (at issue)
Texaco Inc.
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.