Granted Patent
Utility
US 6,369,731 · App. 09/724,170
Delta sigma D/A converter
Inventors:
Minoru Takeda, Yoshihiro Hanada, Akira Toyama
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Nov 28, 2000
Inventors
Minoru Takeda
Yoshihiro Hanada
Akira Toyama
Assignee (at issue)
Nippon Precision Circuits Inc.
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.