Granted Patent
Utility
US 4,767,734 · App. 06/801,922
Hydrocarbon conversion process and catalyst for selectively making middle distillates
Inventor:
John W. Ward
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: Nov 26, 1985
Inventor
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.