Granted Patent
Utility
US 5,374,840 · App. 08/213,362
Semiconductor device with isolated transistors
Inventor:
Katsujiro Arai
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: Mar 15, 1994
Inventor
Katsujiro Arai
Assignee (at issue)
Matsushita Electronics Corporation
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.