Granted Patent
Utility
US 6,209,315 · App. 09/302,660
Method and device for exhaust gas after-treatment in an internal combustion engine equipped with an SCR catalyst
Inventor:
Manfred Weigl
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Apr 30, 1999
Inventor
Manfred Weigl
Assignee (at issue)
Siemens Aktiengesellschaft
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.