Granted Patent
Utility
US 6,087,295 · App. 09/107,673
Reduction of NO.sub.x in the exhaust gases from internal combustion engines containing excess oxygen
Inventors:
Karl Kharas, Heinz J. Robota
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Jun 30, 1998
Inventors
Karl Kharas
Heinz J. Robota
Assignee (at issue)
ASEC Manufacturing
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.