Granted Patent
Utility
US 6,756,150 · App. 10/118,389
Fuel cell having a non-electrolytic layer
Inventors:
Chockkalingham Karuppaiah, Yaobang Wu
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Apr 8, 2002
Inventors
Chockkalingham Karuppaiah
Yaobang Wu
Assignee (at issue)
Plug Power 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.