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Polypore International

Celgard successfully sues firm over lithium-ion separator trade secrets

Fri, 09/20/2019 - 11:38 -- Paul Crompton

US battery separator firm Celgard, a subsidiary of Polypore International, has successfully sued Canadian company Targray International on infringement of two patents on its lithium-ion separator portfolio.

The case— heard in California, US— involved Celgard’s ceramic coated battery separator patent (US Patent 6,432,586, now U.S. Patent RE47,520) and Celgard’s polypropylene separator patent (U.S. Patent 6,692,867).

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Asahi Kasei shareholders agree deal

Fri, 05/29/2015 - 11:08 -- Paul Crompton
Asahi Kasei shareholders agree deal

Shareholders at Lithium-ion and lead-acid battery separator firm Polypore International have approved the sale of the firm for around $3.2billion.

Approval for the deal - first announced in February - was obtained during a meeting on May 12 and paves the way for the deal to go through.

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