Granted Patent
Utility
US 6,232,254 · App. 09/147,477
Method of cleaning and/or regenerating wholly or partially de-activated catalysts for stack-gas nitrogen scrubbing
Inventors:
Gunter Schneider, Jochen Benz, Peter Buck
Patented Case
View Patent ↗
Granted: May 15, 2001
Filed: Jan 7, 1999
Inventors
Gunter Schneider
Jochen Benz
Peter Buck
Assignee (at issue)
Energie-Versorgung Schwaben AG
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.