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:
Jul. 20, 2010
Filed:
Mar. 15, 2005
Applicants:
Kazuhisa Kajihara, Niihama, JP;
Yoshiaki Takeuchi, Niihama, JP;
Inventors:
Kazuhisa Kajihara, Niihama, JP;
Yoshiaki Takeuchi, Niihama, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01F 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method for producing an α-alumina particle. The method for producing an α-alumina particle comprises steps of: (1) placing a powdery mixture containing an aluminum salt and a seed crystal under a circumstance at not less than pyrolysis temperature of the aluminum salt, and (2) calcining the resultant.