TREA

Jiang QIAN

Follow

Person

  • Chengdu, CN
People

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

    Sliding sleeve
    • Patent number 11,885,201
    • Issue date Jan 30, 2024
    • China Petroleum and Chemical Corporation
    • Zhenwei Gan
    • E21 - EARTH DRILLING MINING

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

    NOVEL SLIDING SLEEVE
    • Publication number 20210189833
    • Publication date Jun 24, 2021
    • China Petroleum and Chemical Corporation
    • Zhenwei GAN
    • E21 - EARTH DRILLING MINING