Granted Patent
Utility
US 5,419,122 · App. 08/130,804
Detection of catalytic converter operability by light-off time determination
Inventors:
Ferdinand E. Tabe, Charles F. Aquino, John E. Bradley
Patented Case
View Patent ↗
Granted: May 30, 1995
Filed: Oct 4, 1993
Inventors
Ferdinand E. Tabe
Charles F. Aquino
John E. Bradley
Assignee (at issue)
Ford Motor Company
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.