Granted Patent
Utility
US 6,677,067 · App. 09/986,940
Safety process and device for starting up a fuel cell
Inventor:
Pierre Charlat
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Nov 13, 2001
Inventor
Pierre Charlat
Assignee (at issue)
L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude
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.