TREA

Liyuan YANG

Follow

Person

  • Beijing, CN
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Rotating cutter single cone bit
    • Patent number 10,961,784
    • Issue date Mar 30, 2021
    • Southwest Petroleum University
    • Lian Chen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Composite drill bit
    • Patent number 10,352,101
    • Issue date Jul 16, 2019
    • Chengdu Weiyi Petroleum Technology Co., Ltd.
    • Liyuan Yang
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents