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:
May. 28, 2002
Filed:
Jul. 31, 1998
Applicant:
Inventors:
Hideyuki Hatakeyama, Kawasaki, JP;
Hideo Ukuda, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/00 ; G02B 1/10 ; B32B 7/04 ;
U.S. Cl.
CPC ...
G02B 1/00 ; G02B 1/10 ; B32B 7/04 ;
Abstract
An anti-fogging and anti-reflection optical article included a substrate, a first water-absorbing film provided on the substrate, a thin film of high refractive index provided on the first water-absorbing film, and a second water-absorbing film provided on the thin film of high refractive index. The first water-absorbing film contains a water-absorbing polymer and is provided on the substrate. The thin film of high refractive index includes a polycondensation product of a hydrolysate of a metal alkoxide, and the second water-absorbing film includes a water-absorbing polymer.