The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2006
Filed:
Dec. 13, 2002
Applicants:
Junpei Uruno, Tokai, JP;
Yasuhiko Kouno, Naka, JP;
Inventors:
Junpei Uruno, Tokai, JP;
Yasuhiko Kouno, Naka, JP;
Assignee:
Hitachi, Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
F02P 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An igniter of the present invention has an insulated gate semiconductor device having a collector terminal, an emitter terminal and a gate terminal, a current control circuit which limits current by controlling voltage at the gate terminal when current for flowing through the insulated gate semiconductor device exceeds a fixed value, a voltage monitor circuit for detecting a potential of the collector, and a control current adjusting circuit for controlling current which flows through the gate terminal by receiving output from the voltage monitor circuit.