Granted Patent
Utility
US 4,078,992 · App. 05/788,372
Process for oxidation of mercaptans in hydrocarbon distillates and in akaline medium
Inventor:
Walter M. Douglas
Patented Case
View Patent ↗
Granted: Mar 14, 1978
Filed: Apr 18, 1977
Inventor
Walter M. Douglas
Assignee (at issue)
UOP LLC
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.