Granted Patent
Utility
US 4,909,945 · App. 07/226,408
Method for increasing the size of elemental sulfur particles produced by a hydrogen sulfide removal process
Inventor:
Dennis D. Delaney
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Jul 29, 1988
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.