Granted Patent
Utility
US 6,715,281 · App. 10/232,784
Oxygen storage management and control with three-way catalyst
Inventor:
Dannie Zhu
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Aug 28, 2002
Inventor
Dannie Zhu
Assignee (at issue)
Daimlerchrysler AG
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.