Granted Patent
Utility
US 4,337,145 · App. 06/267,097
Fluid catalytic cracking process
Inventor:
Hosheng Tu
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: May 26, 1981
Inventor
Hosheng Tu
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.