Granted Patent
Utility
US 4,632,749 · App. 06/648,432
Fluid catalytic cracking hydrocarbon conversion process
Inventor:
Lee Hilfman
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Sep 7, 1984
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.