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US Patent 7438841 Polyester resin compositions for calendering

Patent 7438841 was granted and assigned to Eastman Chemical Company on October, 2008 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee

Eastman Chemical Company

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Paul Mary Flynn0

Timothy Michael Sanders0

Hubertus Jacobus Wilhelmus Moolenaar0

Richard Leon McConnell0

Date of Patent

October 21, 2008

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Patent Application Number

118436800

Date Filed

August 23, 2007

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Patent Citations Received

US Patent 12116452 Crystallizable shrinkable films and thermoformable sheets made from resins blends

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Patent Primary Examiner

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Patent abstract

A polyester resin composition is calendered to produce a film or a sheet. The polyester resin composition is a polyester having a crystallization half time from a molten state of at least 5 minutes combined with an additive for preventing sticking of the polyester to calendering rolls.

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