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:
Aug. 23, 2011
Filed:
Jun. 15, 2009
Takafumi Nonaka, Tokyo, JP;
Takashi Kumagai, Tokyo, JP;
Noriyuki Matsubara, Tokyo, JP;
Kazuo Ban, Tokyo, JP;
Koichi Saito, Tokyo, JP;
Takafumi Nonaka, Tokyo, JP;
Takashi Kumagai, Tokyo, JP;
Noriyuki Matsubara, Tokyo, JP;
Kazuo Ban, Tokyo, JP;
Koichi Saito, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Mitsubishi Electric Lighting Corporation, Kamakura-Shi, Kanagawa-Ken, JP;
Abstract
A series load circuit is a circuit formed by connecting a light-emitting device unit(the first load circuit) and a light-emitting device unit(the second load circuit) in series. A voltage generating circuitgenerates voltage to be applied to the series load circuit. A current detecting circuitdetects electric current flowing through the light-emitting device unit. A controlling circuitcontrols the voltage generating circuitso that the electric current detected by the current detecting circuitbecomes a predetermined current value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile