US Patent 7736548 Non-linear optical device with long grating persistency

Patent 7736548 was granted and assigned to Nitto Denko on June, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Nitto Denko

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

77365480

Patent Inventor Names

Peng Wang0

Michiharu Yamamoto0

Date of Patent

June 15, 2010

Patent Application Number

117815080

Date Filed

July 23, 2007

Patent Primary Examiner

‌

Vasu Jagannathan

Patent abstract

A non-linear optical device comprising a polymer configured to provide a grating holding ratio of 20% or higher after about four minutes, wherein the polymer comprises a first repeating unit comprising a first moiety having formula (M-1) and a second repeating unit comprising a second moiety having formula (M-2), as defined herein.