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:
Oct. 20, 2009
Filed:
Jan. 25, 2006
Tomohiro Yamada, Chiba, JP;
Masahiro Kato, Chiba, JP;
Tadaomi Mori, Chiba, JP;
Hitoshi Toki, Chiba, JP;
Tomohiro Yamada, Chiba, JP;
Masahiro Kato, Chiba, JP;
Tadaomi Mori, Chiba, JP;
Hitoshi Toki, Chiba, JP;
Futaba Corporation, Chiba, JP;
Abstract
A SrTiO:Pr phosphor includes a SrTiO:Pr phosphor material and an additive having one or more elements selected from the group consisting of W, Mo and V in a form of an elemental substance and/or a compound. A total amount of one or more elements included in the additive is in a range from 0.1 wt % to 30 wt % of the SrTiO:Pr phosphor. The additive is WOand a particle size distribution of WOis such that a weight of WOwhose particle diameters are in a range from 0.2 to 0.4 μm is not less than 70% of a total weight of WO. A fluorescent luminous tube includes the SrTiO:Pr phosphor.