4. Liquid purification or separation
  5. Filter
  6. Material

Da-Ming Wang

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Asymmetric porous polytetrafluoroethylene membrane and...

Liquid purification or separation – Filter – Material
Reexamination Certificate

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Asymmetric porous polytetrafluoroethylene membrane for a filter

Liquid purification or separation – Filter – Material
Reexamination Certificate

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Asymmetric porous polytetrafluoroethylene membrane for clothing

Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation is specified as water proof
Reexamination Certificate

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Chitosan membrane containing nano-inorganic particles and...

Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Reexamination Certificate

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Composite membrane and method for forming the same

Coating processes – Foraminous product produced – Microporous coating
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2880849

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