TREA

Qizun Yi

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  • Beijing, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sand control screen for heavy oil thermal recovery
    • Patent number 10,767,450
    • Issue date Sep 8, 2020
    • Starse Energy and Technology (Group) Co., Ltd.
    • Huian Yi
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Liner hanger top packer
    • Patent number 9,745,809
    • Issue date Aug 29, 2017
    • Starse Energy and Technology (Group) Co., Ltd.
    • Huian Yi
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents