Granted Patent
Utility
US 6,570,413 · App. 09/661,905
Driver circuit for switching device
Inventors:
Naoki Kumagai, Hiroyuki Kawakami
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Sep 14, 2000
Inventors
Naoki Kumagai
Hiroyuki Kawakami
Assignee (at issue)
FUJI ELECTRIC CO., 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.