4. Wells
  5. Processes
  6. Graveling or filter forming

Ping Duan

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Apparatus and method for controlled deployment of...

Wells – Screens – Porous material
Reexamination Certificate

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Shape memory polyurethane foam for downhole sand control...

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Shape memory polyurethane foam for downhole sand control...

Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Including surface treatment of porous body
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2175936

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