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:
Apr. 25, 2006
Filed:
Apr. 06, 2004
Kiyoshi Takahashi, Kyoto, JP;
Shinichiro Hataoka, Osaka, JP;
Masahiro Yamamoto, Osaka, JP;
Takashi Tsutatani, Shiga, JP;
Tomoyuki Seki, Osaka, JP;
Makoto Horiuchi, Nara, JP;
Tsuyoshi Ichibakase, Osaka, JP;
Kiyoshi Takahashi, Kyoto, JP;
Shinichiro Hataoka, Osaka, JP;
Masahiro Yamamoto, Osaka, JP;
Takashi Tsutatani, Shiga, JP;
Tomoyuki Seki, Osaka, JP;
Makoto Horiuchi, Nara, JP;
Tsuyoshi Ichibakase, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A high pressure discharge lamp with a trigger wire wound around a side tube portion has the structure in which the side tube portion has a first glass portion extending from a luminous bulb and a second glass portion provided in at least a portion of the inside of the first glass portion, and in which the second glass portion contains at least one substance of Li, Na, and K of from 0.001 wt % to 1.0 wt % inclusive. This structure provides a high pressure discharge lamp operable with a drastically reduced starting voltage.