Granted Patent
Utility
US 5,374,365 · App. 07/870,280
Polyphenol compounds and their use in lubricants and coatings
Inventor:
John Rutledge Lawson
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: Apr 17, 1992
Inventor
John Rutledge Lawson
Assignee (at issue)
Zeneca Limited
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.