Granted Patent
Utility
US 6,788,513 · App. 10/351,516
Switching power supply circuit
Inventor:
Kazuhito Kimura
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Jan 27, 2003
Inventor
Kazuhito Kimura
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, LTD.
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.