4. Earth boring, well treating, and oil field chemistry
  5. Well treating
  6. Contains organic component

Pingmei Wang

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Braided comb-shaped salt-resistant polymer thickening agent

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate

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Flexible polymer, particles prepared therefrom and process...

Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2293727

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