Granted Patent
Utility
US 4,120,825 · App. 05/436,605
Hydrogenative conversion catalyst
Inventor:
John W. Ward
Patented Case
View Patent ↗
Granted: Oct 17, 1978
Filed: Jan 25, 1974
Inventor
John W. Ward
Assignee (at issue)
Union Oil Company of California
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.