Granted Patent
Utility
US 5,200,102 · App. 07/801,220
Multifunctional olefin copolymer and lubricating oil composition
Inventors:
Munmaya K. Mishra, Isaac D. Rubin
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Dec 2, 1991
Inventors
Munmaya K. Mishra
Isaac D. Rubin
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.