TREA

Wenfeng PANG

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  • Chengdu, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sliding sleeve device
    • Patent number 11,933,138
    • Issue date Mar 19, 2024
    • China Petroleum and Chemical Corporation
    • Zhimin Hou
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tool for opening sliding sleeve
    • Patent number 11,248,444
    • Issue date Feb 15, 2022
    • China Petroleum and Chemical Corporation
    • Zhenwei Gan
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    SLIDING SLEEVE DEVICE
    • Publication number 20230313641
    • Publication date Oct 5, 2023
    • China Petroleum and Chemical Corporation
    • Zhimin HOU
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TOOL FOR OPENING SLIDING SLEEVE
    • Publication number 20210172287
    • Publication date Jun 10, 2021
    • China Petroleum and Chemical Corporation
    • Zhenwei GAN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...