Granted Patent
Utility
US 5,240,889 · App. 07/729,458
Hydrated alkylation catalyst
Inventors:
Martin West, Suheil F. Abdo
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Jul 12, 1991
Inventors
Martin West
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.