Granted Patent
Utility
US 5,204,988 · App. 07/729,390
MOS semiconductor device having a surge protecting element
Inventor:
Kenya Sakurai
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jul 12, 1991
Inventor
Kenya Sakurai
Assignee (at issue)
FUJI ELECTRIC CO., 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.