Granted Patent
Utility
US 4,892,723 · App. 07/243,460
Method for improving the long-term stability of H.sub.2 S absorption-oxidation process solutions
Inventors:
Dennis D. Delaney, Hugh W. Gowdy
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Sep 12, 1988
Inventors
Dennis D. Delaney
Hugh W. Gowdy
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.