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:
Jul. 31, 2007
Filed:
Jun. 14, 2004
Applicants:
You-ping Chan, Lyons, FR;
Olivier Breyne, Lyons, FR;
Inventors:
You-Ping Chan, Lyons, FR;
Olivier Breyne, Lyons, FR;
Assignee:
Corning Inc., Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/23 (2006.01); C07D 311/60 (2006.01); C07D 311/78 (2006.01); C07D 311/92 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are novel benzo-, naphtho- and phenanthrochromenes substituted by carbamated or ureated phenyls having the following general formula (I): wherein Rrepresents a group their preparation, photochromic compositions and articles containing them. This family of compounds have interesting and useful photochromic properties, especially in terms of absorption band and discoloration speed.