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:
Oct. 31, 2017
Filed:
Dec. 26, 2012
Essilor International (Compagnie Generale D'optique), Charenton-le-Pont, FR;
Shanghai University, Shanghai, CN;
Liyi Shi, Shanghai, CN;
Stephanie Pega, Charenton-le-Pont, FR;
Xavier Panchout, Charenton-le-Pont, FR;
Yves Leclaire, Charenton-le-Pont, FR;
Shuai Yuan, Shanghai, CN;
Zhuyi Wang, Shanghai, CN;
Yin Zhao, Shanghai, CN;
Jian Zhao, Singapore, SG;
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;
SHANGHAI UNIVERSITY, Shanghai, CN;
Abstract
The present invention pertains to a method for producing a colloidal suspension of zirconia particles, comprising the following successive steps: a) subjecting a mixture of zirconium oxychloride and an alkali metal halide in an aqueous solvent to hydrothermal treatment at a temperature above 150° C., so as to obtain a suspension in the form of a two-phase mixture comprising a slurry and a supernatant, b) without first peptizing it, desalting said suspension so as to form a colloidal suspension of zirconia.