Granted Patent
Utility
US 6,775,973 · App. 10/309,712
Continuous flow, NOx-reduction adsorption unit for internal combustion engines
Inventors:
Ke Liu, Peter Foley, Eric A. Rohrbach, Wayne G. Wnuck
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Dec 4, 2002
Inventors
Ke Liu
Peter Foley
Eric A. Rohrbach
Wayne G. Wnuck
Assignee (at issue)
HydrogenSource LLC
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.