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:
Aug. 03, 2004
Filed:
Dec. 23, 2002
Applicant:
Inventors:
Hiroshi Kato, Yamaguchi-ken, JP;
Michimasa Tamura, Yamaguchi-ken, JP;
Makoto Kameda, Yamaguchi-ken, JP;
Assignee:
Tokuyama Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 1/404 ;
U.S. Cl.
CPC ...
C04B 1/404 ;
Abstract
Silica composite oxide particles comprising silica and a metal oxide other than silica, the content of the metal oxide other than silica being from 30 to 50 mol %, and a coefficient of variation in the particle diameter being not larger than 30%. The silica composite oxide particles contain metal oxides other than silica in an amount of not smaller than 30 mol %, which could not be produced thus far, and feature excellent spherical shape and excellent monodispersion property.