Granted Patent
Utility
US 6,774,680 · App. 10/379,540
Comparator including a differential transistor pair and a diode arrangement
Inventors:
Kengo Imagawa, Norio Chujo, Kaoru Arita, Yoshiharu Umemura, Masahiro Imanari
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Mar 6, 2003
Inventors
Kengo Imagawa
Norio Chujo
Kaoru Arita
Yoshiharu Umemura
Masahiro Imanari
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.