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:
Sep. 24, 2013
Filed:
Mar. 10, 2011
Kosuke Saka, Hyogo, JP;
Kazuhiro Goto, Hyogo, JP;
Takashi Yamashita, Hyogo, JP;
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A first energy ratio A/B of a first alternating current of a steady frequency supplied to a lamp is set to a value C, when the lamp is horizontally placed. A second alternating current of a lower frequency, whose second energy ratio A/B is set to the value C, is inserted. When the lamp is vertically placed, a first energy ratio A'/B′ is set to the value C or a value D, which is smaller than the value C. A second ratio A′/B′ is set to the value D or a value E, which is lower than the value C. A and A′ each represents an energy that flows from a first electrode of a pair of electrodes of the lamp to a second electrode of the pair. B and B′ each represents an energy that flows from the second electrode to the first electrode.