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:
Oct. 01, 2013
Filed:
Dec. 16, 2010
Meng He, Murrysville, PA (US);
Darrin R. Dabideen, Pittsburgh, PA (US);
Anil Kumar, Murrysville, PA (US);
Ruisong Xu, Monroeville, PA (US);
Meng He, Murrysville, PA (US);
Darrin R. Dabideen, Pittsburgh, PA (US);
Anil Kumar, Murrysville, PA (US);
Ruisong Xu, Monroeville, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
Described herein are compounds generally comprising an indeno[2',3′:3,4]naptho[1,2-b]pyran structure. Such compounds may be useful for their photochromic properties, and be used in certain photochromic compositions. Such compositions may further comprise other photochromic compositions and/or materials. Additionally, such compounds and/or compositions may be suitable for preparing certain photochromic articles. Also described herein are methods for preparing certain photochromic compounds, compositions, and articles.