TREA

Yan LYU

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  • Guanghan, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Methods for tripping a drilling rig or a workover rig
    • Patent number 11,603,720
    • Issue date Mar 14, 2023
    • Sichuan Honghua Petroleum Equipment Co., Ltd.
    • Junqing Chai
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling machines and methods thereof
    • Patent number 11,299,942
    • Issue date Apr 12, 2022
    • Sichuan Honghua Petroleum Equipment Co., Ltd.
    • Chong Chen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pipe racking system
    • Patent number 11,286,731
    • Issue date Mar 29, 2022
    • Sichuan Honghua Petroleum Equipment Co., Ltd.
    • Ying Li
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents