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:
May. 19, 2015
Filed:
Dec. 07, 2011
Meng He, Murrysville, PA (US);
Darrin R. Dabideen, Pittsburgh, PA (US);
Xiao-man Dai, Export, PA (US);
Wenjing Xiao, Murrysville, PA (US);
Ruisong Xu, Murrysville, PA (US);
Sujit Mondal, Gibsonia, PA (US);
Anil Kumar, Murrysville, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Meng He, Murrysville, PA (US);
Darrin R. Dabideen, Pittsburgh, PA (US);
Xiao-Man Dai, Export, PA (US);
Wenjing Xiao, Murrysville, PA (US);
Ruisong Xu, Murrysville, PA (US);
Sujit Mondal, Gibsonia, PA (US);
Anil Kumar, Murrysville, PA (US);
Anu Chopra, Pittsburgh, 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.