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:
Sep. 08, 1992
Filed:
Mar. 22, 1991
Atsuya Towata, Nagoya, JP;
Mutsuo Sando, Narukomachi, JP;
Agency of Industrial Science & Technology, Tokyo, JP;
Ministry of International Trade & Industry, Tokyo, JP;
Abstract
Minute particles having the surface thereof coated with a dense layer of extremely fine particles of a metal oxide are produced by dispersing the fine particles having water adsorbed in advance on the surface thereof in a hydrophobic organic solvent having an alcohol and optionally an amine dissolved therein and adding to the resultant dispersion a hydrophobic organic solvent having a metal alkoxide dissolved therein, thereby inducing hydrolysis of the metal alkoxide on the surface of the fine particles and consequent deposition of a metal oxide on the surface of the fine particles.