Granted Patent
Utility
US 4,209,384 · App. 05/972,629
Hydrocarbon hydroprocessing
Inventor:
Lee Hilfman
Patented Case
View Patent ↗
Granted: Jun 24, 1980
Filed: Dec 22, 1978
Inventor
Lee Hilfman
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.