US Patent 7223451 Polycarbonate-based oriented film and retardation film
Patent 7223451 was granted and assigned to Teijin on May, 2007 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
March 28, 2003
0
Date of Patent
May 29, 2007
0
Patent Application Number
10487765
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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