Meichun LI

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
High density environmentally friendly polymer water-based drilling...
- Patent number 12,269,985
- Issue date Apr 8, 2025
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Jinsheng Sun
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
High-temperature and high-salt resistant hyperbranched lubricant fo...
- Patent number 12,264,279
- Issue date Apr 1, 2025
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Jian Li
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Bio-enzyme degradable temporary plugging material and preparation m...
- Patent number 12,110,449
- Issue date Oct 8, 2024
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Jintang Wang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
High temperature and high salinity-resistant complementarily rigid-...
- Patent number 11,970,655
- Issue date Apr 30, 2024
- China University of Petroleum (East China)
- Jingping Liu
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
HIGH TEMPERATURE AND HIGH SALINITY-RESISTANT COMPLEMENTARILY RIGID-...
- Publication number 20240010904
- Publication date Jan 11, 2024
- China University of Petroleum (East China)
- Jingping LIU
- E21 - EARTH DRILLING MINING