Granted Patent
Utility
US 4,664,939 · App. 06/837,925
Vertical semiconductor processor
Inventor:
Herbert C. Ovshinsky
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Mar 10, 1986
Inventor
Herbert C. 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.