Yong Qin

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Drilling fluid additive composition and water-based drilling fluid...
- Patent number 9,890,318
- Issue date Feb 13, 2018
- 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...