Granted Patent
Utility
US 6,326,253 · App. 09/333,050
Method for fabricating semiconductor device including MIS and bipolar transistors
Inventor:
Naoki Kotani
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Jun 15, 1999
Inventor
Naoki Kotani
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.