Granted Patent
Utility
US 6,017,650 · App. 09/056,298
Gas-diffussion electrodes for polymeric membrane fuel cell
Inventors:
Enrico Ramunni, Manfred Kienberger
Patented Case
View Patent ↗
Granted: Jan 25, 2000
Filed: Apr 7, 1998
Inventors
Enrico Ramunni
Manfred Kienberger
Assignee (at issue)
De Nora S.p.A.
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.