Granted Patent
Utility
US 4,596,783 · App. 06/780,749
Hydrogenation catalysts and selective hydrogenation therewith
Inventor:
Charles A. Drake
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Sep 27, 1985
Inventor
Charles A. Drake
Assignee (at issue)
Phillips Petroleum Company
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.