Granted Patent
Utility
US 4,250,018 · App. 06/073,168
Multiple stage hydrocarbon conversion process
Inventor:
Kenneth D. Peters
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Sep 6, 1979
Inventor
Kenneth D. Peters
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.