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:
Jun. 23, 1992
Filed:
Nov. 13, 1990
Applicant:
Inventors:
Yoshinori Ohtaka, Takatsuki, JP;
Haruo Shibata, Takatsuki, JP;
Toyokazu Amano, Kyoto, JP;
Mutsuo Takahashi, Nagaokakyo, JP;
Shigeru Kamiya, Hirakata, JP;
Assignee:
Matsushita Electronics Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ; H01K / ;
U.S. Cl.
CPC ...
313489 ; 313112 ; 313493 ; 313635 ; 313312 ;
Abstract
A shatter-proof fluorescent lamp which includes a glass tube, electrodes connected to opposite terminal ends of the glass tube, a phosphor layer coated on the inside surface of the glass tube, a gaseous mixture containing mercury and rare gases confined in the glass tube, at least one ultraviolet ray absorbing layer capable of absorbing ultraviolet rays of 400 nm or less formed on the glass tube, and a transparent polymer resin layer formed on the ultraviolet ray absorbing layer.