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:
Feb. 11, 2014
Filed:
Nov. 22, 2011
Yunyi LU, Cockeysville, MD (US);
Wenjing Xiao, Murrysville, PA (US);
Robert W. Walters, Export, PA (US);
Feng Wang, Export, PA (US);
M. Frank Haley, Glenshaw, PA (US);
Jason R. Lewis, Monaca, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Beon-kyu Kim, Gibsonia, PA (US);
Huayun Yu, Monroeville, PA (US);
Yunyi Lu, Cockeysville, MD (US);
Wenjing Xiao, Murrysville, PA (US);
Robert W. Walters, Export, PA (US);
Feng Wang, Export, PA (US);
M. Frank Haley, Glenshaw, PA (US);
Jason R. Lewis, Monaca, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Beon-Kyu Kim, Gibsonia, PA (US);
Huayun Yu, Monroeville, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
The present invention relates to photochromic compounds that include at least two photochromic moieties that are linked together by a multivalent linking group. The multivalent linking group can be selected so as to be flexible and/or substantially prevent electronic interaction between any two photochromic moieties through the multivalent linking group. The present invention also relates to photochromic compositions and articles that include at least a photochromic amount of one or more photochromic compounds of the present invention.