Granted Patent
Utility
US 6,144,232 · App. 09/256,293
Chopper type voltage comparing circuit capable of correctly determining output polarity, and voltage comparing method
Inventors:
Akira Yukawa, Toshio Ohkido
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Feb 24, 1999
Inventors
Akira Yukawa
Toshio Ohkido
Assignee (at issue)
NEC CORPORATION
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.