Kai Pang

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Grouting and water blocking method for directional hole with large...
- Patent number 12,196,076
- Issue date Jan 14, 2025
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING
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
Method and device for determining development status of separation...
- Patent number 12,091,972
- Issue date Sep 17, 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
Information Patent Grant
Method for blocking mine water inrush
- Patent number 11,781,429
- Issue date Oct 10, 2023
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Filling bag and sealing method for drilled hole for detection in th...
- Patent number 11,459,849
- Issue date Oct 4, 2022
- CHINA UNIVERSITY OF MINING & TECHNOLOGY, BEIJING
- Yifan Zeng
- E21 - EARTH DRILLING MINING

Person

Patents Grantslast 30 patents

Grouting and water blocking method for directional hole with large...

Directional drilling method for branching borehole with short radiu...

Method for repairing aquifer in coal mine area

Method and device for determining development status of separation...

Directional drilling device and drilling method of aquifer remediat...

Method for blocking mine water inrush

Filling bag and sealing method for drilled hole for detection in th...