Granted Patent
Utility
US 4,615,792 · App. 06/727,152
Hydrogen circulation for moving bed catalyst transfer systems
Inventor:
Arthur R. Greenwood
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Apr 25, 1985
Inventor
Arthur R. Greenwood
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.