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:
Jan. 08, 2013
Filed:
Sep. 24, 2009
Hirohisa Ishikawa, Hyogo, JP;
Hiroyoshi Kitano, Hyogo, JP;
Nobuhiro Nagamachi, Hyogo, JP;
Toyohiko Kumada, Hyogo, JP;
Takashi Yamashita, Hyogo, JP;
Michiko Morooka, Hyogo, JP;
Hirohisa Ishikawa, Hyogo, JP;
Hiroyoshi Kitano, Hyogo, JP;
Nobuhiro Nagamachi, Hyogo, JP;
Toyohiko Kumada, Hyogo, JP;
Takashi Yamashita, Hyogo, JP;
Michiko Morooka, Hyogo, JP;
Ushio Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A short arc type discharge lamp comprises a pair of electrodes, at least one of which has an electrode main body portion and an axis portion and/or a taper portion formed between the electrode main body portion and the axis portion, wherein in the at least one of the electrodes, the axis portion has an outer diameter smaller than that of the electrode main body portion, and at least one groove extending in an axis line direction of the electrode is formed in the electrode main body portion, the axis portion or the taper portion.