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:
Nov. 05, 2013
Filed:
Mar. 16, 2010
Applicant:
Fang Chen, Hallett Cove, AU;
Inventor:
Fang Chen, Hallett Cove, AU;
Assignee:
Carl Zeiss Vision Australia Holdings Limited, Lonsdale, South Australia, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/07 (2006.01); G02B 5/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a liquid casting composition for producing photochromic optical elements, the composition including: (i) an acrylate or methacrylate monomer; (ii) a photochromic compound; (iii) a terpinolene-based radical chain transfer agent; and (iv) a thermal free radical initiator. Also provided are methods for producing photochromic optical elements using the liquid casting composition and photochromic optical elements produced thereby. The photochromic optical elements include, for example, ophthalmic lenses.