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:
Apr. 22, 2014
Filed:
Mar. 02, 2009
Stuart Aiken, North Yorkshire, GB;
Christopher David Gabbutt, Lancashire, GB;
Bernard Mark Heron, East Yorkshire, GB;
Christopher Stephen Kershaw, Bristol, GB;
Nicola Jane Smith, North Yorkshire, GB;
Jean-paul Cano, Charenton-le-Pont, FR;
Stuart Aiken, North Yorkshire, GB;
Christopher David Gabbutt, Lancashire, GB;
Bernard Mark Heron, East Yorkshire, GB;
Christopher Stephen Kershaw, Bristol, GB;
Nicola Jane Smith, North Yorkshire, GB;
Jean-Paul Cano, Charenton-le-Pont, FR;
Essilor International (Compagnie Generale d'Optique), Charenton-le-Pont, FR;
Abstract
A naphthopyran compound represented by the formulae (I) to (II) wherein: —mi, Hi2, p, q are each an integer comprised from O to 4 or 5 inclusive; —Ri, R2 and R4, represent a group selected from halogen, H, —Ra, aryl, —OH, —ORa, —SH, —SRa, —NH2, —NR8RaI, —NRbRc, —NRal-CORa, —NRaiCO(aryl), —NRai aryl, —N-aryfe, —N(aryl)CO(aryl), —CO—R3, —CO2R3I, —OC(O)—Rd, and —X—(Re)—Y, and linear or branched (Ci-Ci8) perfluoroalkyl group, wherein R3, Rai, Rb, Rc, X, Y, Re, Rd are as defined into the description; —Zi re resent a group selected from: (formules).