Granted Patent
Utility
US 6,794,940 · App. 10/453,812
Operational amplifier circuit
Inventor:
Hisao Suzuki
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Jun 4, 2003
Inventor
Hisao Suzuki
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.