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US Patent 7794511 Battery separator for lithium polymer battery

Patent 7794511 was granted and assigned to Celgard on September, 2010 by the United States Patent and Trademark Office.

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Is a

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Patent attributes

Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

C. Glen Wensley0

Kevin D. Chambers0

Date of Patent

September 14, 2010

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Patent Application Number

116714860

Date Filed

February 6, 2007

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Patent Citations Received

US Patent 11973178 Lithium ion cells with high performance electrolyte and silicon oxide active materials achieving very long cycle life performance

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US Patent 12006387 Polymer composition and methods for making same

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Patent Primary Examiner

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Patent abstract

A battery separator for a lithium battery is disclosed. The separator has a microporous membrane and a coating thereon. The coating is made from a mixture of a gel forming polymer, a first solvent, and a second solvent. The first solvent is more volatile than the second solvent. The second solvent acts as a pore former for the gel-forming polymer.

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