Granted Patent
Utility
US 4,290,913 · App. 06/091,929
Catalytic composite useful for the treatment of mercaptan-containing sour petroleum distillate
Inventor:
Robert R. Frame
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Nov 7, 1979
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.