US Patent 7157523 Ring-opened polynorbornenes

Patent 7157523 was granted and assigned to JSR Corporation on January, 2007 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

JSR Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7157523

Date of Patent

January 2, 2007

Patent Application Number

10534003

Date Filed

November 12, 2003

Patent Primary Examiner

‌

Fred Teskin

Patent abstract

The disclosure is directed to a partially hydrogenated ring-opened polynorbornene and a process for making the same. The ring-opened polynorbornene is low in birefringence, high in wavelength dependency about birefringence and excellent in transparency and heat resistance.

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