Jienian Yan

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Drilling fluid additive composition and pseudo oil-based drilling f...
- Patent number 9,834,717
- Issue date Dec 5, 2017
- China University of Petroleum (Beijing)
- Guancheng Jiang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
High-density water-based drilling fluid suitable for horizontal sha...
- Patent number 9,790,417
- Issue date Oct 17, 2017
- China University of Petroleum (Beijing)
- Guancheng Jiang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Modified silicon dioxide nano-particles and preparation method ther...
- Patent number 9,790,415
- Issue date Oct 17, 2017
- China University of Petroleum (Beijing)
- Guancheng Jiang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
DRILLING FLUID ADDITIVE COMPOSITION AND PSEUDO OIL-BASED DRILLING F...
- Publication number 20170335163
- Publication date Nov 23, 2017
- CHINA UNIVERSITY OF PETROLEUM (BEIJING)
- Guancheng JIANG
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...