Xinjiang Wei

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Directional drilling method for branching borehole with short radiu...
- Patent number 12,140,025
- Issue date Nov 12, 2024
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for repairing aquifer in coal mine area
- Patent number 12,129,620
- Issue date Oct 29, 2024
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Directional drilling device and drilling method of aquifer remediat...
- Patent number 12,055,040
- Issue date Aug 6, 2024
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING