Granted Patent
Utility
US 4,775,425 · App. 07/077,722
P and n-type microcrystalline semiconductor alloy material including band gap widening elements, devices utilizing same
Inventors:
Subhendu Guha, Stanford R. Ovshinsky
Patented Case
View Patent ↗
Granted: Oct 4, 1988
Filed: Jul 27, 1987
Inventors
Subhendu Guha
Stanford R. Ovshinsky
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.