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:
Nov. 06, 2012
Filed:
Nov. 30, 2010
Satoru Watanabe, Tokyo, JP;
Kazuhiro Itoh, Tokyo, JP;
Naomichi Miyakawa, Tokyo, JP;
Kazunari Watanabe, Tokyo, JP;
Setsuro Ito, Tokyo, JP;
Satoru Watanabe, Tokyo, JP;
Kazuhiro Itoh, Tokyo, JP;
Naomichi Miyakawa, Tokyo, JP;
Kazunari Watanabe, Tokyo, JP;
Setsuro Ito, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
The present invention relates to a fluorescent lamp including: a discharge space containing a discharge gas and being surrounded by a glass; a discharge electrode; a phosphor; and a mayenite type compound provided on at least a part of an inner surface contacting the discharge gas. According to the fluorescent lamp of the present invention, a fluorescent lamp that has good luminous efficiency of ultraviolet ray from a discharge gas, has good discharge characteristics such as discharge starting voltage and discharge sustaining voltage in a fluorescent lamp, is chemically stable, has excellent oxidation resistance, has excellent sputtering resistance, and can achieve electric power saving is provided.