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:
Aug. 27, 2013
Filed:
Dec. 16, 2010
Meng He, Murrysville, PA (US);
Sujit Mondal, Gibsonia, PA (US);
Darrin R. Dabideen, Pittsburgh, PA (US);
Anil Kumar, Murrysville, PA (US);
Xiao-man Dai, Export, PA (US);
Meng He, Murrysville, PA (US);
Sujit Mondal, Gibsonia, PA (US);
Darrin R. Dabideen, Pittsburgh, PA (US);
Anil Kumar, Murrysville, PA (US);
Xiao-Man Dai, Export, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
The present invention relates to compounds represented by the following Formula I, Ring-A of the Formula I can be, for example an aryl group, and Lis a chiral or achiral lengthening group. The compound represented by Formula I can be a photochromic compound. The present invention also relates to photochromic compositions and photochromic articles that include one or more photochromic compounds, such as represented by Formula I.