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:
Sep. 29, 2020
Filed:
May. 30, 2017
Applicant:
Essilor International, Paris, FR;
Inventor:
Hideyuki Wakiyasu, Tokyo, JP;
Assignee:
ESSILOR INTERNATIONAL, Charenton-le-Pont, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01); C08G 18/75 (2006.01); C08G 18/38 (2006.01); C08G 18/08 (2006.01); G02C 7/02 (2006.01); C08K 5/3475 (2006.01);
U.S. Cl.
CPC ...
G02B 1/041 (2013.01); C08G 18/08 (2013.01); C08G 18/38 (2013.01); C08G 18/3863 (2013.01); C08G 18/75 (2013.01); C08G 18/758 (2013.01); C08K 5/3475 (2013.01); G02C 7/02 (2013.01);
Abstract
The present invention addresses the problem of providing an eyeglass lens that has excellent UV absorption properties and low yellowness. This eyeglass lens is produced using a resin composition that contains at least one isocyanate compound selected from the group consisting of 2,5-bis(isocyanatomethyl)bicyclo[2.2.1]heptane and 2,6-bis(isocyanatomethyl)bicyclo[2.2.1]heptane; a polythiol compound; a UV absorber represented by formula (1); and a UV absorber represented by formula (2). The M value represented by formula (X) is greater than 0.7 but less than 16.7.