Polypore’s Celgard Files Suit Against Sumitomo Over Batteries - Bloomberg

Polypore’s Celgard Files Suit Against Sumitomo Over Batteries - Bloomberg: ""

The complaint, filed Feb. 22 in federal court in Charlotte, North Carolina, claims Sumitomo is infringing a patent issued in 2002 for a separator in high-energy rechargeable batteries. The separators prevent short circuits that can reduce efficiency and limit safety problems from overheating.

(Via Bloomberg.)

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