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:
Sep. 22, 2026
Filed:
May. 26, 2021
Transitions Optical, Ltd., Tuam, IE;
Ramaiahgari Reddy, Murrysville, PA (US);
Anil Kumar, Murrysville, PA (US);
Transitions Optical, Ltd., Tuam, IE;
Abstract
The invention relates to a curable photochromic composition including (a) a photochromic material, (b) an active hydrogen group-containing component of (i) an active hydrogen group-containing fluorinated polymer having an active hydrogen group equivalent weight ranging from 200 to 5000 g/mole and a number average molecular weight ranging from 5,000 to 50,000 g/mole, and (ii) a polymer having at least two active hydrogen groups per molecule, a number average molecular weight of at least 1000 g/mole, and an equivalent weight of at least 500 g/mole; and (c) a curing agent having functional groups which are reactive with active hydrogen groups. Also provided are photochromic articles.