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:
Feb. 10, 2004
Filed:
Aug. 28, 2002
Applicant:
Inventors:
Assignee:
Futaba Corporation, Chiba-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/10 ;
U.S. Cl.
CPC ...
G09G 3/10 ;
Abstract
A phosphor without using cadmium having excellent luminous characteristic which emits a light in the visible region. The phosphor is prepared by mixing 1% of B O powder and 10% of In O with CaS:Eu, Ce phosphor to prepare a mixture to which is added vehicle containing an organic binder to form paste. The vacuum fluorescent display using the phosphor exhibits lifetime performance and initial luminance superior to the fluorescent display in which a phosphor without using cadmium is applied.