Granted Patent
Utility
US 5,897,846 · App. 08/788,214
Catalytic converter having a catalyst with noble metal on molecular sieve crystal surface and method of treating diesel engine exhaust gas with same
Inventors:
Karl Kharas, Heinz J. Robota
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: Jan 27, 1997
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.