Granted Patent
Utility
US 6,552,402 · App. 09/287,310
Composite MOS transistor device
Inventors:
Masayuki Ozasa, Tatsuo Okamoto, Hidehiko Kurimoto, Shiro Dosho, Kazuhiko Nagaoka
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Apr 7, 1999
Inventors
Masayuki Ozasa
Tatsuo Okamoto
Hidehiko Kurimoto
Shiro Dosho
Kazuhiko Nagaoka
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.