Granted Patent
Utility
US 6,448,836 · App. 09/731,710
Operational amplifier and its offset cancel circuit
Inventors:
Masatoshi Kokubun, Shinya Udo, Seiji Yamagata, Chikara Tsuchiya
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Dec 8, 2000
Inventors
Masatoshi Kokubun
Shinya Udo
Seiji Yamagata
Chikara Tsuchiya
Assignee (at issue)
Fujitsu Limited
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.