Wenjiang TENG

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Chengdu, CN

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Patents Grantslast 30 patents

Information Patent Grant
Sliding sleeve device
- Patent number 11,933,138
- Issue date Mar 19, 2024
- China Petroleum and Chemical Corporation
- Zhimin Hou
- E21 - EARTH DRILLING MINING
Information Patent Grant
Tool for jet packing and fracturing and tubular column comprising same
- Patent number 11,142,989
- Issue date Oct 12, 2021
- China Petroleum and Chemical Corporation
- Zhenwei Gan
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SLIDING SLEEVE DEVICE
- Publication number 20230313641
- Publication date Oct 5, 2023
- China Petroleum and Chemical Corporation
- Zhimin HOU
- E21 - EARTH DRILLING MINING
Information Patent Application
TOOL FOR JET PACKING AND FRACTURING AND TUBULAR COLUMN COMPRISING SAME
- Publication number 20210164318
- Publication date Jun 3, 2021
- China Petroleum and Chemical Corporation
- Zhenwei GAN
- E21 - EARTH DRILLING MINING