Granted Patent
Utility
US 5,697,221 · App. 08/569,487
Robust metal hydride hydrogen storage system
Inventors:
Krishna Sapru, Srinivasan Venkatesan, Ned T. Stetson, Krishnaswamy Rangaswamy
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Dec 8, 1995
Inventors
Krishna Sapru
Srinivasan Venkatesan
Ned T. Stetson
Krishnaswamy Rangaswamy
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.