Granted Patent
Utility
US 4,827,043 · App. 07/146,756
Impurity removal from carbon monoxide and/or hydrogen-containing streams
Inventor:
Gerald E. Butler
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Jan 22, 1988
Inventor
Gerald E. Butler
Assignee (at issue)
EASTMAN KODAK 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.