Granted Patent
Utility
US 4,678,765 · App. 06/657,482
Catalytic cracking catalysts for high octane gasoline products
Inventors:
Robert L. Chiang, Mark T. Staniulis
Patented Case
View Patent ↗
Granted: Jul 7, 1987
Filed: Oct 3, 1984
Inventors
Robert L. Chiang
Mark T. Staniulis
Assignee (at issue)
Union Carbide Corporation
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.