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:
May. 04, 2004
Filed:
Mar. 21, 2002
Applicant:
Inventors:
Hisashi Yoshida, Tokyo, JP;
Maki Minamoto, Tokyo, JP;
Kazuya Ito, Tokyo, JP;
Yosuke Nishikage, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/102 ; C09K 1/178 ;
U.S. Cl.
CPC ...
H01J 1/102 ; C09K 1/178 ;
Abstract
A phosphor represented by the formula (1−x)CaO.EU(O).yMgO.nSiO , wherein x, y and n represent number of moles, respectively, provides increased initial luminous intensity and exhibits superior sustainability of luminous intensity over long periods of use in a fluorescent lamp including the above phosphor.