Granted Patent
Utility
US 4,217,374 · App. 05/884,664
Amorphous semiconductors equivalent to crystalline semiconductors
Inventors:
Stanford R. Ovshinsky, Masatsugu Izu
Patented Case
View Patent ↗
Granted: Aug 12, 1980
Filed: Mar 8, 1978
Inventors
Stanford R. Ovshinsky
Masatsugu Izu
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.