Granted Patent
Utility
US 5,300,217 · App. 08/025,057
Hydroprocess utilizing a delta alumina-supported nickel and molybdenum catalyst
Inventors:
Howard D. Simpson, Milan Skripek
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Mar 2, 1993
Inventors
Howard D. Simpson
Milan Skripek
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.