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:
Nov. 11, 1997
Filed:
Oct. 18, 1995
Yoshihiko Murayama, Tokyo, JP;
Nobuyoshi Takeuchi, Tokyo, JP;
Yasumitsu Aoki, Tokyo, JP;
Takashi Matsuzawa, Tokyo, JP;
Nemoto & Co., Ltd., Tokyo, JP;
Abstract
A phosphorescent phosphor comprising a matrix expressed by M.sub.1-x Al.sub.2 O.sub.4-x (except X=0) in which M is at least one metal element selected from a group consisting of calcium, strontium and barium. X is in a range -0.33.ltoreq..times..ltoreq.0.60 (except x=0). Europium is doped to said matrix as an activator and at least one element selected from a group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium is doped to said matrix as a co-activator. Magnesium is doped to M.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile