Granted Patent
Utility
US 6,275,014 · App. 09/638,195
Switching regulator circuit capable of eliminating power supply recharging operation by reverse coil current
Inventor:
Minoru Sudo
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Aug 11, 2000
Inventor
Minoru Sudo
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.