Granted Patent
Utility
US 6,431,224 · App. 10/081,399
Catalyst removal workstations and systems incorporating same for tubular reactors
Inventor:
Paul Fry
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Feb 21, 2002
Inventor
Paul Fry
Assignee (at issue)
Catalyst Services, Inc.
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.