Granted Patent
Utility
US 4,477,417 · App. 06/542,313
Catalyst for reducing the ignition temperature of diesel soot
Inventors:
Rainer Domesle, Herbert Volker, Edgar Koberstein, Hans-Dieter Pletka
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Oct 14, 1983
Inventors
Rainer Domesle
Herbert Volker
Edgar Koberstein
Hans-Dieter Pletka
Assignee (at issue)
Degussa 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.