Granted Patent
Utility
US 6,475,453 · App. 09/133,004
Configuration for decomposing nitrogen oxides in a gas stream and method for using the configuration
Inventors:
Wieland Mathes, Lothar Hofmann, Frank Witzel
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Aug 12, 1998
Inventors
Wieland Mathes
Lothar Hofmann
Frank Witzel
Assignee (at issue)
Siemens Aktiengesellschaft
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.