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:
Oct. 16, 2007
Filed:
Sep. 20, 2004
Applicants:
Hisashi Yoshida, Tokyo, JP;
Ryo Yoshimatsu, Tokyo, JP;
Inventors:
Hisashi Yoshida, Tokyo, JP;
Ryo Yoshimatsu, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 11/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vacuum ultraviolet-excited phosphor is composed of a gadolinium-activated rare-earth aluminum-scandium borate that is represented by a general formula (YGd)AlSc(BO)(where 0<x≦1, 0<y≦3). This vacuum ultraviolet-excited phosphor, when irradiated by vacuum ultraviolet light having a wavelength of 200 nm or less, can produce ultraviolet light having wavelength in the range from 312 nm to 315 nm with higher efficiency and stronger emitted intensity, and can obtain a higher areal intensity ratio than a phosphor of the prior art.