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:
Jun. 27, 2017
Filed:
Oct. 03, 2014
Transitions Optical, Inc., Pinellas Park, FL (US);
Joseph David Turpen, Safety Harbor, FL (US);
Cynthia Kutchko, Pittsburgh, PA (US);
Glen Todd Owens, St. Petersburg, FL (US);
Vitawat Lahsangah, St. Petersburg, FL (US);
Jerry L. Koenig, II, Largo, FL (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
A photochromic optical article is provided, which includes: an optical substrate; a photochromic layer over a surface of the optical substrate, wherein the photochromic layer includes a photochromic compound; and a protective layer over the photochromic layer, wherein the protective layer includes a matrix that includes residues of an ethylenically unsaturated radically polymerizable material that includes at least one allophanate group. A method of forming the photochromic optical article is also provided.