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:
Jul. 02, 2013
Filed:
Aug. 26, 2009
Noriyuki Kitamura, Hadano, JP;
Keiichi Shimizu, Yokohama, JP;
Hiroshi Terasaka, Yokohama, JP;
Tomokazu Usami, Yokohama, JP;
Noriyuki Kitamura, Hadano, JP;
Keiichi Shimizu, Yokohama, JP;
Hiroshi Terasaka, Yokohama, JP;
Tomokazu Usami, Yokohama, JP;
Abstract
An LED lighting device includes light emitting diode, a current control circuit having a first series circuit of first and second switching elements, a second series circuit of third and fourth switching elements, and a condenser, which is configured so that the first and second series circuits are parallel connected and the condenser is connected between a connection point of the first and second switching elements and a connection point of the third and fourth switching elements, and a control circuit for alternatively on-off controlling a pair of the first and fourth switching elements and a pair of the second and third switching elements.