Granted Patent
Utility
US 4,752,379 · App. 06/910,516
Arsenic removal from shale oil by oxidation
Inventor:
Dennis D. Delaney
Patented Case
View Patent ↗
Granted: Jun 21, 1988
Filed: Sep 23, 1986
Inventor
Dennis D. Delaney
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.