Granted Patent
Utility
US 4,226,898 · App. 05/887,353
Amorphous semiconductors equivalent to crystalline semiconductors produced by a glow discharge process
Inventors:
Stanford R. Ovshinsky, Arun Madan
Patented Case
View Patent ↗
Granted: Oct 7, 1980
Filed: Mar 16, 1978
Inventors
Stanford R. Ovshinsky
Arun Madan
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.