Jingdong Hu

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Drilling fluid additive composition suitable for coal-bed gas wells...
- Patent number 9,902,890
- Issue date Feb 27, 2018
- China University of Petroleum (Beijing)
- Guancheng Jiang
- E21 - EARTH DRILLING MINING
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...

Patents Applicationslast 30 patents

Information Patent Application
Drilling Fluid Additive Composition Suitable for Coal-Bed Gas Wells...
- Publication number 20180057728
- Publication date Mar 1, 2018
- CHINA UNIVERSITY OF PETROLEUM (BEIJING)
- Guancheng JIANG
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...