Granted Patent
Utility
US 6,447,942 · App. 09/524,116
Alkaline fuel cell
Inventors:
Stanford R. Ovshinsky, Srinivasan Venkatesan, Boyko Aladjov, Rosa Young, Thomas Hopper
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Mar 13, 2000
Inventors
Stanford R. Ovshinsky
Srinivasan Venkatesan
Boyko Aladjov
Rosa Young
Thomas Hopper
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.