Granted Patent
Utility
US 4,234,411 · App. 06/020,771
Fluid catalytic cracking process
Inventor:
Gregory J. Thompson
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Mar 15, 1979
Inventor
Gregory J. Thompson
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.