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:
Nov. 01, 2005
Filed:
Oct. 30, 2003
Yuichiro Imanari, Tsukuba, JP;
Takayoshi Ezuhara, Tsukuba, JP;
Susumu Miyazaki, Fujishiro, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A phosphor for vacuum ultraviolet ray-excited light-emitting elements which comprises a compound represented by the following formula (I):MMMMMMO  (I)(wherein Mis at least one element selected from the group consisting of La, Y and Gd, Mis at least one element selected from the group consisting of Ce and Tb, Mis at least one element selected from the group consisting of Ca, Sr and Ba, Mis at least one element selected from the group consisting of Mg and Zn, Mis at least one element selected from the group consisting of Al and Ga, and Mis at least one element selected from the group consisting of Mn and Eu, and a, b, c, d, e and f are numbers satisfying the conditions of 0≦a<1, 0≦b≦0.6, 0≦c≦0.5, 0≦d≦0.5, 0≦e<1, 0≦f<1, a+b+c+d<1 and 0<c+d+e+f), respectively.