Granted Patent
Utility
US 4,520,380 · App. 06/540,153
Amorphous semiconductors equivalent to crystalline semiconductors
Inventors:
Stanford R. Ovshinsky, Arun Madan
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Oct 7, 1983
Inventors
Stanford R. Ovshinsky
Arun Madan
Assignee (at issue)
Sovonics Solar Systems
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.