Granted Patent
Utility
US 6,116,021 · App. 09/158,460
Method for monitoring the performance of a catalytic converter using a rate modifier
Inventors:
Darren Schumacher, Michael A. Badalament, Jeffrey D. Naber, Alan Chewter, Kevin J. Bush, Bruce A. Church, David Frankowski, David Price
Patented Case
View Patent ↗
Granted: Sep 12, 2000
Filed: Sep 22, 1998
Inventors
Darren Schumacher
Michael A. Badalament
Jeffrey D. Naber
Alan Chewter
Kevin J. Bush
Bruce A. Church
David Frankowski
David Price
Assignee (at issue)
Motorola, Inc.
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.