Le ZHAO

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Chengdu, Sichuan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Internal blowout-prevention gas-retaining connector for mine
- Patent number 12,221,849
- Issue date Feb 11, 2025
- Sichuan University
- Mingzhong Gao
- E21 - EARTH DRILLING MINING
Information Patent Grant
Continuous conduit operation apparatus
- Patent number 12,018,535
- Issue date Jun 25, 2024
- Shenzhen University
- Mingzhong Gao
- E21 - EARTH DRILLING MINING
Information Patent Grant
Continuous conduit apparatus based on guiding and injecting integra...
- Patent number 12,018,536
- Issue date Jun 25, 2024
- Shenzhen University
- Mingzhong Gao
- E21 - EARTH DRILLING MINING
Information Patent Grant
Guiding and injecting integrated mechanism for continuous conduit
- Patent number 11,821,271
- Issue date Nov 21, 2023
- Shenzhen University
- Heping Xie
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
CONTINUOUS CONDUIT APPARATUS BASED ON GUIDING AND INJECTING INTEGRA...
- Publication number 20230349245
- Publication date Nov 2, 2023
- Shenzhen University
- Mingzhong GAO
- E21 - EARTH DRILLING MINING
Information Patent Application
CONTINUOUS CONDUIT OPERATION APPARATUS
- Publication number 20230235632
- Publication date Jul 27, 2023
- Shenzhen University
- Mingzhong GAO
- E21 - EARTH DRILLING MINING
Information Patent Application
GUIDING AND INJECTING INTEGRATED MECHANISM FOR CONTINUOUS CONDUIT
- Publication number 20230220738
- Publication date Jul 13, 2023
- Shenzhen University
- Heping XIE
- E21 - EARTH DRILLING MINING
Information Patent Application
INTERNAL BLOWOUT-PREVENTION GAS-RETAINING CONNECTOR FOR MINE
- Publication number 20230175339
- Publication date Jun 8, 2023
- SICHUAN UNIVERSITY
- Mingzhong GAO
- E21 - EARTH DRILLING MINING