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. 11, 2003
Filed:
Aug. 09, 2000
Applicant:
Inventors:
Yoriko Suda, Mobara, JP;
Kenichi Honda, Mobara, JP;
Yoshitaka Sato, Mobara, JP;
Hitoshi Toki, Mobara, JP;
Assignee:
Futaba Corporation, Mobara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 1/106 ;
U.S. Cl.
CPC ...
C09K 1/106 ;
Abstract
A phosphor in the form of a columnar powder capable of exhibiting enhanced luminous efficiency, providing various luminous colors by electron excitation depending on the selection of elements added thereto and having improved life characteristics. The phosphor is made by heating a starting material constituted by a GaN based phosphor material to a temperature equal to or greater than a sublimation temperature thereof. The phosphor thus obtained is represented by Ga In N:A,B, wherein x is larger than or equal to 0 and smaller than 1 (0≦x<1), A is Zn or Mg, and B is Si or Ge.