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. 26, 2005
Filed:
Jun. 06, 2003
Applicant:
Kazuhiro Matsuo, Takatsuki, JP;
Inventor:
Kazuhiro Matsuo, Takatsuki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J001/62 ;
U.S. Cl.
CPC ...
Abstract
A fluorescent lamp has a translucent container and a phosphor layer formed on an inner surface of the translucent container, and the phosphor layer comprises phosphor particles and a metal oxide that is arranged to adhere to any of contact portions among the phosphor particles and to partially expose surfaces of the phosphor particles. According to the present invention, film strength of the phosphor layer is improved while suppressing a drastic drop in an initial flux of the fluorescent lamp and deterioration of the luminance.