Granted Patent
Utility
US 6,313,598 · App. 09/463,591
Power semiconductor module and motor drive system
Inventors:
Akihiro Tamba, Toshio Ogawa, Kazuji Yamada
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Jan 28, 2000
Inventors
Akihiro Tamba
Toshio Ogawa
Kazuji Yamada
Assignee (at issue)
HITACHI, 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.