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. 09, 1999
Filed:
Feb. 08, 1996
Matsushita Electronics Corporation, Osaka, JP;
Abstract
A highly safe fluorescent lamp is disclosed, in a mixed layer having couplings of phosphors and a metal oxide such as yttrium oxide is formed on the inner surface of a glass bulb. The couplings of the mixed layer strongly couples the grains arranged in crosslinked state between the phosphor grains of the phosphor material. A first thin film of the metal oxide is formed between the glass bulb and the mixed layer. A second thin film of the same metal oxide is formed on the inner surface of the mixed layer nearer to the bulb center. The amount of mercury sealed in the glass bulb thus is reduced, thereby minimizing the mercury consumption which has so far been the problem against environmental protection.