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:
Mar. 10, 2015
Filed:
Mar. 30, 2011
Applicants:
Masataka Fujinaga, Ube, JP;
Takayuki Ueda, Ube, JP;
Shinsuke Jida, Ube, JP;
Inventors:
Assignee:
Ube Industries, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/08 (2006.01); C09K 11/64 (2006.01); C09K 11/77 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/7734 (2013.01); C09K 11/0883 (2013.01);
Abstract
A method for producing an α-sialon-based oxynitride phosphor includes a mixed powder blended such that the product is represented by the formula: MSiAlON:Ln(wherein M is at least one metal selected from Li, Ca, Mg, Y and a lanthanide metal excluding La and Ce, Ln is at least one lanthanide metal selected from Eu, Dy, Er, Tb and Yb), the mixed powder containing an amorphous silicon nitride powder having an loose bulk density of 0.16 to 0.22 g/cm, and is fired at 1,400 to 2,000° C. in a nitrogen-containing inert gas atmosphere.