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. 10, 2014
Filed:
Sep. 25, 2007
Anu Chopra, Pittsburgh, PA (US);
Patrick M. Brown, Moon Township, Allegheny County, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Patrick M. Brown, Moon Township, Allegheny County, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
Various photochromic materials are provided that are essentially free of polymerizable unsaturated groups, and comprise: Alternative embodiments include various substituents at other positions of the indeno[2',3′:3,4]naphtho[1,2-b]pyran. Also provided are photochromic articles including a substrate and one of the above photochromic materials, in contact with at least a portion of the substrate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile