Granted Patent
Utility
US 6,504,400 · App. 10/122,178
Level conversion circuit and semiconductor integrated circuit device employing the level conversion circuit
Inventors:
Kazuo Tanaka, Hiroyuki Mizuno, Rie Nishiyama, Manabu Miyamoto
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Apr 16, 2002
Inventors
Kazuo Tanaka
Hiroyuki Mizuno
Rie Nishiyama
Manabu Miyamoto
Assignees (at issue)
HITACHI, LTD.
Hitachi Ulsi Systems 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.