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:
Mar. 20, 2012
Filed:
Oct. 09, 2008
Applicants:
Jee-seon Kim, Seoul, KR;
Hye-min Kim, Daejeon Metropolitan, KR;
Ja-young Han, Daejeon Metropolitan, KR;
Inventors:
Jee-Seon Kim, Seoul, KR;
Hye-Min Kim, Daejeon Metropolitan, KR;
Ja-Young Han, Daejeon Metropolitan, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 5/23 (2006.01); C08G 18/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a UV curable photochromic composition comprising a photochromic dye and an acrylate-based prepolymer having a polyol structure in which an acrylate-based functional group is introduced by using an iso-cyanate-based compound having two or more isocyanate functional groups as a linker, and to products formed by using the same.