Granted Patent
Utility
US 4,360,421 · App. 06/332,053
Method for treating mercaptans contained in a sour petroleum distillate
Inventor:
Robert R. Frame
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: Dec 17, 1981
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.