Granted Patent
Utility
US 4,798,816 · App. 06/943,911
Process for increasing the selectivity of an alkylation catalyst for monoalkylation
Inventors:
Charles T. Ratcliffe, John W. Ward
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Dec 19, 1986
Inventors
Charles T. Ratcliffe
John W. Ward
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.