Granted Patent
Utility
US 6,492,056 · App. 09/687,717
Catalytic hydrogen storage composite material and fuel cell employing same
Inventor:
Stanford R. Ovshinsky
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Oct 13, 2000
Inventor
Stanford R. Ovshinsky
Assignee (at issue)
Energy Conversion Devices, 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.