Granted Patent
Utility
US 6,764,664 · App. 10/127,252
Catalyst for the combustion of diesel soot, methods for making the catalyst and methods of using the catalyst
Inventor:
Wenzhong Zhang
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Apr 22, 2002
Inventor
Wenzhong Zhang
Assignee (at issue)
Delphi Technologies
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.