Granted Patent
Utility
US 6,722,121 · App. 10/200,711
Control strategy for regenerating a NOx adsorber catalyst in an exhaust system of an engine having a variable valve actuation mechanism
Inventors:
Xinqun Gui, Jinhui Sun, Steven Omachi, Xiaoyan Lei, Russell P. Zukouski
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Jul 22, 2002
Inventors
Xinqun Gui
Jinhui Sun
Steven Omachi
Xiaoyan Lei
Russell P. Zukouski
Assignee (at issue)
International Engine Intellectual Property Company, 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.