Granted Patent
Utility
US 4,701,429 · App. 06/920,556
Catalyst regeneration with varying air flow to burn-off zone from drying zone through halogenation zone
Inventor:
Arthur R. Greenwood
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: Oct 20, 1986
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.