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:
Nov. 07, 2006
Filed:
Apr. 19, 2004
Takayuki Kato, Susono, JP;
Tomohiro Taniguchi, Susono, JP;
Makoto Egashira, Nagasaki, JP;
Yasuhiro Shimizu, Nagasaki, JP;
Takeo Hyodo, Nagasaki, JP;
Kazutaka Kamitani, Nagasaki, JP;
Takayuki Kato, Susono, JP;
Tomohiro Taniguchi, Susono, JP;
Makoto Egashira, Nagasaki, JP;
Yasuhiro Shimizu, Nagasaki, JP;
Takeo Hyodo, Nagasaki, JP;
Kazutaka Kamitani, Nagasaki, JP;
Yazaki Corporation, Tokyo, JP;
Abstract
A method of producing hollow alumina particles in which the grain size of hollow alumina particles is controlled and in which a high formation ratio of hollow particles is obtained while suppressing the formation of solid particles. The method includes irradiating supersonic waves to an aqueous solution containing aluminum nitrate or aluminum acetate, and a surfactant or an organic acid to generate micro-liquid droplets in an atomized state, introducing only minute liquid droplets having a certain grain size or less, which have been classified by an air stream, into a furnace and burning them in air.