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:
Dec. 12, 2017
Filed:
Sep. 16, 2014
Applicant:
Essilor International (Compagnie Generale D'optique), Charenton-le-Pont, FR;
Inventors:
Claudine Biver, Charenton-le-Pont, FR;
Samuel Archambeau, Charenton-le-Pont, FR;
Fabien Berit-Debat, Charenton-le-Pont, FR;
Assignee:
ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), Charenton-le-Pont, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/153 (2006.01); G02F 1/15 (2006.01); C09K 9/02 (2006.01); G02C 7/10 (2006.01);
U.S. Cl.
CPC ...
G02F 1/1521 (2013.01); C09K 9/02 (2013.01); G02C 7/101 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1011 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); G02F 2001/1502 (2013.01); G02F 2001/1515 (2013.01);
Abstract
The present invention relates to an electrochromic composition comprising at least one reducing compound, at least one oxidizing compound which is selected from specific viologen derivatives, and at least one dye. Said composition can be used as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.