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:
Jan. 24, 1978
Filed:
Jun. 01, 1976
Tetsuhiko Tomiki, Kawasaki, JA;
Takeshi Takeda, Kawasaki, JA;
Takeo Miyata, Kawasaki, JA;
Fumio Muramatsu, Kawasaki, JA;
Matsushita Electric Industrial Co., Ltd., Kawasaki, JA;
Abstract
A cerium-activated yttriumaluminate phosphor such as YA10.sub.3 :Ce featuring an enhanced luminous intensity is produced by adding a barium compound exemplified by BaO, BaCO.sub.3, Ba(OH).sub.2 and BaF.sub.3 to a mixture of source materials of the host material and the activator and baking the resulting mixture at a usual temperature ranging from 1000.degree. to 1400.degree. C. The barium compound preferably amounts to 0.001-8 mol% of the yttriumaluminate and may alternatively be introduced into a preliminarily baked and pulverized mixture of the source materials.