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:
Apr. 27, 2004
Filed:
Sep. 28, 2001
Shoichiro Shio, Yokohama, JP;
Asa Kimura, Yokohama, JP;
Shiseido Co., Ltd., Tokyo, JP;
Abstract
A rod-shaped mesoporous powder which is mainly composed of silicon oxide and has homogenous pore, and obtained by a process comprises, a dissolution step wherein a concentration of 0.3-1.2M of a silicate which is in the range of 0<SiO /Y O<2 (Y: alkali metal atom) is dissolved in the presence of a cationic surfactant and the pH is 11 or more, a condensation step wherein the pH is adjusted to 10.5 or less within 30 minutes, a rod micelle is formed with said cationic surfactant and a silicate is condensed on said rod micelle, and a removal step wherein said cationic surfactant is removed from a micelle state condensation which has an outer shell made of the silicate by said condensation.