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:
Aug. 04, 2020
Filed:
Jan. 04, 2018
Applicant:
Essilor International, Charenton-le-Pont, FR;
Inventors:
Claudine Biver, Charenton-le-Pont, FR;
Fabien Berit-Debat, Charenton-le-Pont, FR;
Samuel Archambeau, Charenton-le-Pont, FR;
Christopher Gabbutt, Huddersfield, GB;
Stuart Aiken, Huddersfield, GB;
Bernard Mark Heron, Huddersfield, GB;
Thomas David Broadbent, Huddersfield, GB;
Assignee:
Essilor International, Charenton-Le-Pont, FR;
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/14 (2006.01); C09K 9/02 (2006.01);
U.S. Cl.
CPC ...
C07D 401/14 (2013.01); C09K 9/02 (2013.01);
Abstract
The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.