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:
Feb. 16, 2010
Filed:
Sep. 15, 2006
Christy Ford, St. Petersburg, FL (US);
Pamela Mcclimans, Flower Mound, TX (US);
Christy Ford, St. Petersburg, FL (US);
Pamela McClimans, Flower Mound, TX (US);
Essilor International (Compagnie Generale d'Optique), Charenton le Pont, FR;
Abstract
Processes for obtaining an impact resistant, abrasion and/or scratch resistant photochromic article comprising a substrate having two main faces, comprising: preparing a curable coating composition comprising at least one unblocked polyisocyanate terminated polyurethane pre-polymer, at least one polyol, and at least one photochromic agent; depositing the curable coating composition onto at least part of a main face of the substrate; curing the coating composition for 10 minutes or less, at a temperature lower than or equal to 100° C. to form an impact resistant photochromic coating; forming an abrasion and/or scratch resistant coating on the impact resistant photochromic coating or forming a protective coating on the impact resistant photochromic coating and then forming an abrasion and/or scratch resistant coating on said protective coating. Articles obtainable by such processes, including but not limited to ophthalmic lenses. Curable coating compositions involved in such processes.