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. 19, 2013
Filed:
Mar. 20, 2009
Mineta Suzuki, Saitama, JP;
Takanobu Shiokawa, Kanagawa, JP;
Kazuhiro Yamada, Saitama, JP;
Hiroyuki Nakayama, Tokyo, JP;
Hideki Yamaguchi, Kyoto, JP;
Ayako Maruta, Kyoto, JP;
Mineta Suzuki, Saitama, JP;
Takanobu Shiokawa, Kanagawa, JP;
Kazuhiro Yamada, Saitama, JP;
Hiroyuki Nakayama, Tokyo, JP;
Hideki Yamaguchi, Kyoto, JP;
Ayako Maruta, Kyoto, JP;
Pentax Ricoh Imaging Company, Ltd., Tokyo, JP;
Abstract
A method for forming an anti-reflection coating of alkali-treated silica aerogel on a substrate, comprising the steps of hydrolyzing and polymerizing alkoxysilane in the presence of a base catalyst to prepare an alkaline sol, adding an acid catalyst to the alkaline sol to carry out further hydrolysis and polymerization to prepare a first acidic sol, hydrolyzing and polymerizing alkoxysilane in the presence of an acid catalyst to prepare a second acidic sol, mixing the first and second acidic sols, applying the resultant mixed sol to the substrate, drying it, and treating the resultant silica aerogel coating with an alkali.