Granted Patent
Utility
US 4,642,303 · App. 06/813,884
Catalyst composition
Inventor:
Terry L. Renken
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Dec 27, 1985
Inventor
Terry L. Renken
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.