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. 15, 2013
Filed:
Jan. 19, 2007
Katsuhiro Mori, Shunan, JP;
Yuichiro Kawabata, Shunan, JP;
Ikumi Kawaguchi, Shunan, JP;
Hironobu Nagoh, Shunan, JP;
Katsuhiro Mori, Shunan, JP;
Yuichiro Kawabata, Shunan, JP;
Ikumi Kawaguchi, Shunan, JP;
Hironobu Nagoh, Shunan, JP;
Tokuyama Corporation, Shunan-Shi, JP;
Abstract
A photochromic optical element comprising an optical substrate, a photochromic coat layer, and a hard coat layer that are laminated in this order, wherein (I) the photochromic coat layer comprising an alkylamino group-containing photochromic compound and/or a dialkylamino group-containing photochromic compound in a total amount of 0.1 to 10.0% by mass, and (II) the hard coat layer is obtained by curing a hard coat agent comprising metal oxide fine particles and an organosilicon compound, the hard coat agent containing as the organosilicon compound at least one selected from the group consisting of a tetraalkoxy silane, a methyl trialkoxy silane, and partial hydrolysates thereof in an amount of 10 to 60% by mass based on the total mass of the metal oxide fine particles and the organosilicon compound.