Granted Patent
Utility
US 6,158,397 · App. 09/171,883
Process for reducing the soot content of diesel engine exhaust gases and device for implementing it
Inventors:
Norbert Peters, Caroline Born, Christian Antoni, Tobias Plessing
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Jan 28, 1999
Inventors
Norbert Peters
Caroline Born
Christian Antoni
Tobias Plessing
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.