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. 12, 2009
Filed:
Sep. 26, 2005
Shinichiro Hataoka, Katano, JP;
Kiyoshi Takahashi, Kyotanabe, JP;
Jun Sakaguchi, Takatsuki, JP;
Yoshitaka Kurimoto, Takatsuki, JP;
Syunsuke Ono, Takatsuki, JP;
Takashi Tsutatani, Otsu, JP;
Tomoyuki Seki, Takatsuki, JP;
Makoto Horiuchi, Sakurai, JP;
Tsuyoshi Ichibakase, Takatsuki, JP;
Shinichiro Hataoka, Katano, JP;
Kiyoshi Takahashi, Kyotanabe, JP;
Jun Sakaguchi, Takatsuki, JP;
Yoshitaka Kurimoto, Takatsuki, JP;
Syunsuke Ono, Takatsuki, JP;
Takashi Tsutatani, Otsu, JP;
Tomoyuki Seki, Takatsuki, JP;
Makoto Horiuchi, Sakurai, JP;
Tsuyoshi Ichibakase, Takatsuki, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A method for manufacturing a high pressure mercury lamp having a high pressure resistance strength includes an electric field application step of applying an electric field to at least a light emitting part while keeping the high pressure mercury lamp at a high temperature. As a result of the electric field application step, impurities such as hydrogen and an alkali metal existing in a discharge space and in glass used for forming the light emitting part () and sealing parts () can be reduced, with it being possible to suppress blackening and devitrification during lighting.