Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Fumihiro Kimura0
Jun Sugai0
Michiyuki Yasuda0
Date of Patent
April 1, 2008
0Patent Application Number
108921560
Date Filed
July 16, 2004
0Patent Primary Examiner
Patent abstract
A photochromic material comprising a styrene-based oligomer having a weight average molecular weight of from 200 to 6000 and a photochromic compound selected from the group consisting of spirooxazine derivatives and spiropyran derivatives.
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