Lei Cha

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Chengdu, CN

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Patents Grantslast 30 patents

Information Patent Grant
All-metal intelligent control motor
- Patent number 12,180,808
- Issue date Dec 31, 2024
- SOUTHWEST PETROLEUM UNIVERSITY
- Jialin Tian
- E21 - EARTH DRILLING MINING
Information Patent Grant
High-frequency composite impactor
- Patent number 11,927,077
- Issue date Mar 12, 2024
- SOUTHWEST PETROLEUM UNIVERSITY
- Jialin Tian
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drill string rotation controller for directional drilling
- Patent number 11,834,928
- Issue date Dec 5, 2023
- SOUTHWEST PETROLEUM UNIVERSITY
- Jialin Tian
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fracking tool with electromagnetic intelligent control sliding sleeve
- Patent number 11,828,149
- Issue date Nov 28, 2023
- SOUTHWEST PETROLEUM UNIVERSITY
- Jialin Tian
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
All-Metal Intelligent Control Motor
- Publication number 20240337158
- Publication date Oct 10, 2024
- SOUTHWEST PETROLEUM UNIVERSITY
- Jialin TIAN
- E21 - EARTH DRILLING MINING
Information Patent Application
High-Frequency Composite Impactor
- Publication number 20240052705
- Publication date Feb 15, 2024
- SOUTHWEST PETROLEUM UNIVERSITY
- Jialin TIAN
- E21 - EARTH DRILLING MINING