Granted Patent
Utility
US 4,498,977 · App. 06/555,910
Catalytic oxidation of mercaptan in petroleum distillate
Inventor:
Robert R. Frame
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Nov 29, 1983
Inventor
Robert R. Frame
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.