Quan LI

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Environment-friendly acoustic panel for building
- Patent number 11,306,481
- Issue date Apr 19, 2022
- CHINA CONSTRUCTION FIRST GROUP CORPORATION LIMITED
- Yongzai Wu
- E04 - BUILDING
Information Patent Grant
Method for accurately measuring reopening pressure of hydraulic fra...
- Patent number 11,274,543
- Issue date Mar 15, 2022
- Institute of Geomechanics, Chinese Academy of Geological Sciences
- Qunce Chen
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
ENVIRONMENT-FRIENDLY ACOUSTIC PANEL FOR BUILDING
- Publication number 20220081903
- Publication date Mar 17, 2022
- China construction first group corporation limited
- Yongzai Wu
- E04 - BUILDING
Information Patent Application
METHOD FOR ACCURATELY MEASURING REOPENING PRESSURE OF HYDRAULIC FRA...
- Publication number 20200332647
- Publication date Oct 22, 2020
- Institute of Geomechanics, Chinese Academy of Geological Sciences
- Qunce CHEN
- E21 - EARTH DRILLING MINING