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:
Apr. 09, 1991
Filed:
Jul. 28, 1989
Applicant:
Inventors:
Kunihiko Yoneshima, Hiratsuka, JP;
Fumio Takahashi, Odawara, JP;
Assignee:
Kasei Optonix, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
2523 / ;
Abstract
A fluorescent composition having improved luminance, which is composed of a phosphor consisting essentially of a sulfide represented by the formula: (Zn.sub.1-x, Cd.sub.x)S, [wherein x is a number satisfying a condition of 0.ltoreq.x.ltoreq.1], as the host material; and indium oxide (In.sub.2 O.sub.3), both being mixed or adhered each other, and in which zinc oxide (ZnO) and/or a compound of zinc which can be converted to zinc oxide (ZnO) by heat-treatment is adhered onto the surface of said phosphor or the respective surfaces of said phosphor and said indium oxide.