US Patent 7527754 Photochromic indeno-fused naphthopyrans
Patent 7527754 was granted and assigned to Transitions Optical on May, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
December 21, 2005
Date of Patent
May 5, 2009
Patent Application Number
11314142
Patent Citations Received
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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