Granted Patent
Utility
US 5,002,730 · App. 07/383,693
Preparation of vanadium rich hydrogen storage alloy materials
Inventor:
Michael A. Fetcenko
Patented Case
View Patent ↗
Granted: Mar 26, 1991
Filed: Jul 24, 1989
Inventor
Michael A. Fetcenko
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.