Granted Patent
Utility
US 6,778,417 · App. 10/109,049
Electric-power supplying devices switching between a synchronous rectification and a diode rectification by gradually altering a switching pulse
Inventors:
Kazuhiko Itakura, Hiroshi Shimamori, Kazutoshi Fuchigami, Tsunehiro Ohno
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Mar 29, 2002
Inventors
Kazuhiko Itakura
Hiroshi Shimamori
Kazutoshi Fuchigami
Tsunehiro Ohno
Assignees (at issue)
Fujitsu Limited
Fujitsu Denso 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.