Granted Patent
Utility
US 4,517,073 · App. 06/406,498
Hydrocracking process and catalyst therefor
Inventors:
John W. Ward, Timothy Carlson
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Aug 9, 1982
Inventors
John W. Ward
Timothy Carlson
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.