Granted Patent
Utility
US 4,694,563 · App. 06/342,912
Process for making Schottky-barrier gate FET
Inventor:
Kenichi Kikuchi
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: Jan 26, 1982
Inventor
Kenichi Kikuchi
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.