Granted Patent
Utility
US 6,627,338 · App. 09/746,856
Integrated fuel cell and pressure swing adsorption system
Inventors:
Jean St-Pierre, David P. Wilkinson, David Wainwright
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: Dec 21, 2000
Inventors
Jean St-Pierre
David P. Wilkinson
David Wainwright
Assignee (at issue)
BALLARD POWER SYSTEMS INC.
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.