Granted Patent
Utility
US 5,288,432 · App. 07/026,227
High temperature synthetic lubricants and related engine lubricating systems
Inventor:
Alfred K. Jung
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Feb 12, 1987
Inventor
Alfred K. Jung
Assignee (at issue)
Akzo America 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.