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. 06, 2004
Filed:
Jan. 31, 2002
Applicant:
Inventors:
Tomokazu Suzuki, Anan, JP;
Takuya Hamada, Mobara, JP;
Kazunori Kitagawa, Mobara, JP;
Hitoshi Toki, Mobara, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 1/167 ; C09K 1/155 ;
U.S. Cl.
CPC ...
C09K 1/167 ; C09K 1/155 ;
Abstract
A phosphor material of the chemical composition formula (Sr , Ca )TiO :Pr,Al, where the value of x+y is in the range 0.001 to 0.05. Another phosphor material has the chemical composition formula SrTiO :Pr,Al, in which the surfaces of phosphor particles are diffused with a diffusing agent containing at least one of Be, Mg, Ca, Sr, and Ba. Still another phosphor material has the chemical composition formula SrTiO :Pr,Al, where Sr/Ti molar ratio is 0.88 to 0.99.