Granted Patent
Utility
US 4,816,538 · App. 07/081,472
Nickel-containing hydrocracking catalyst
Inventor:
Suheil F. Abdo
Patented Case
View Patent ↗
Granted: Mar 28, 1989
Filed: Aug 4, 1987
Inventor
Suheil F. Abdo
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.