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Patents Grants
last 30 patents
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Patent Grant
Accelerator used for drilling fluids, water-based drilling fluid an...
Patent number
10,266,744
Issue date
Apr 23, 2019
China University of Petroleum (Beijing)
Guancheng Jiang
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Film former used for coal-bed gas well drilling and preparation met...
Patent number
10,253,237
Issue date
Apr 9, 2019
China University of Petroleum (Beijing)
Guancheng Jiang
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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 Applications
last 30 patents
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Patent Application
ACCELERATOR USED FOR DRILLING FLUIDS, WATER-BASED DRILLING FLUID AN...
Publication number
20190085232
Publication date
Mar 21, 2019
China University of Petroleum (Beijing)
Guancheng JIANG
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
FILM FORMER USED FOR COAL-BED GAS WELL DRILLING AND PREPARATION MET...
Publication number
20190085231
Publication date
Mar 21, 2019
China University of Petroleum (Beijing)
Guancheng JIANG
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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...