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:
Jan. 21, 2014
Filed:
Mar. 26, 2009
Applicants:
Geoffrey Yuxin HU, San Diego, CA (US);
Thomas J. Engardio, Vista, CA (US);
Inventors:
Geoffrey Yuxin Hu, San Diego, CA (US);
Thomas J. Engardio, Vista, CA (US);
Assignee:
Signet Armorlite, El Paso, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 77/04 (2006.01); G02C 5/00 (2006.01); A61F 2/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A photochromic composition for making optical materials comprising a polyurethane prepolymer formed by combining an isocyanate and a compound having an active hydrogen containing group, a polysilsequioxane and a photochromic compound. The photochromic composition may also include a monomer that has both an active hydrogen containing group and an unsaturated group. The polysilsesquioxane is incorporated as a copolymer and/or as a polysilsequioxane-chemically modified polyurethane.