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:
Mar. 25, 1997
Filed:
Jan. 31, 1995
Applicant:
Inventor:
Shigeo Fujino, Odawara, JP;
Assignee:
Kasei Optonix, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313485 ; 427 67 ;
Abstract
A fluorescent lamp includes either laminated layers including a non-fluorescent substance layer, and a phosphor layer, or a layer including a mixture of the non-fluorescent substance, and a phosphor, wherein the non-fluorescent substance is a rare earth oxide of either yttrium, gadolinium, or lanthanum. The rare earth oxide is fired to at least 1000.degree. C. thereby providing the lamp with a higher luminous flux maintaining ratio.