Granted Patent
Utility
US 5,840,260 · App. 08/741,502
Catalyst removal system
Inventors:
Thomas Peyton Easterly, William O. Jones
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Oct 31, 1996
Inventors
Thomas Peyton Easterly
William O. Jones
Assignee (at issue)
SHELL OIL COMPANY
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.