Granted Patent
Utility
US 6,737,843 · App. 10/354,570
PWM switching regulator and electronic apparatus
Inventors:
Yoshihide Kanakubo, Atsuo Fukui
Patented Case
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Granted: May 18, 2004
Filed: Jan 30, 2003
Inventors
Yoshihide Kanakubo
Atsuo Fukui
Assignee (at issue)
SEIKO INSTRUMENTS 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.