Granted Patent
Utility
US 4,257,918 · App. 06/137,700
Catalyst mixture for the catalytic reduction of nitrogen oxides in gaseous mixtures
Inventor:
Edward A. Ginger
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Apr 7, 1980
Inventor
Edward A. Ginger
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.