Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Carol L. Knox0
Shanti Swarup0
Feng Wang0
Date of Patent
March 15, 2011
0Patent Application Number
116870530
Date Filed
March 16, 2007
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Photochromic materials and photochromic compositions and articles including the photochromic materials are disclosed. The photochromic materials may be the reaction product of a hyperbranched polyester polyol having, on average, at least two reactive hydroxyl groups, and at least one photochromic indeno-fused naphthopyran.
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