Granted Patent
Utility
US 4,857,169 · App. 07/119,168
Hydrocracking process utilizing a catalyst having a reduced zeolite content
Inventor:
Suheil F. Abdo
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Nov 10, 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.