Granted Patent
Utility
US 6,737,033 · App. 09/677,356
Method and device for the catalytic removal of a pollutant contained in an exhaust gas of a combustion system
Inventors:
Lothar Hofmann, Wieland Mathes
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Oct 2, 2000
Inventors
Lothar Hofmann
Wieland Mathes
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.