Celgard is the world leader in dry-process manufacturing, and has continuously developed microporous membranes since the late 1960s.

Because of our constant innovation and membrane expertise, we hold a substantial global portfolio of patents covering base films, coatings, multilayer separators, and textile membranes, to name a few, that protect our products and technologies.

Our worldwide patent portfolio is strong, active and growing. It covers products used across the globe in a range of markets and applications, including Electric Drive Vehicles (EDV), Energy Storage Solutions (ESS), specialty batteries, and performance textiles.

Celgard has a history of protecting and enforcing its intellectual property (IP). We will continue to prevent the unfair exploitation of our technology and IP to safeguard our assets and our customers.

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