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:
Feb. 24, 2009
Filed:
Jun. 15, 2006
Kiyoshi Nishimura, Kanagawa-ken, JP;
Miho Watanabe, Kanagawa-ken, JP;
Kiyoshi Otani, Kanagawa-ken, JP;
Kiyoshi Nishimura, Kanagawa-ken, JP;
Miho Watanabe, Kanagawa-ken, JP;
Kiyoshi Otani, Kanagawa-ken, JP;
Toshiba Lighting & Technology Corporation, Tokyo, JP;
Abstract
An object of the present invention to provide a fluorescent lamp in which after formation of a phosphor layer, a glass bulb is bent and in which the phosphor layer is not subject to cracking or peel-off even in bent parts with a small radius of curvature, thus offering a good appearance. A fluorescent lamp includes a glass bulbhaving bent parts, a protective filmhaving a fine grain layercomprising fine grains of average grain size at most 100 nm and attached to an inner surface of the glass bulb, and large-sized grains some of which are buried in the fine grain layerthe other large-sized grains projecting from the fine grain layera phosphor layerformed on the protective filmof the glass bulbdischarge inducing meanssealably installed in opposite ends of the glass bulband a discharge medium sealed in the glass bulb