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Patents Grants
last 30 patents
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Patent Grant
High temperature resistant Portland cement slurry and production me...
Patent number
11,618,844
Issue date
Apr 4, 2023
China National Petroleum Corporation
Hua Zhang
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Method for evaluating breakage strength of first and second cemente...
Patent number
10,876,945
Issue date
Dec 29, 2020
SOUTHWEST PETROLEUM UNIVERSITY
Xiaowei Cheng
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
METHOD FOR EVALUATING BREAKAGE STRENGTH OF FIRST AND SECOND CEMENTE...
Publication number
20200011777
Publication date
Jan 9, 2020
SOUTHWEST PETROLEUM UNIVERSITY
Xiaowei CHENG
G01 - MEASURING TESTING
Information
Patent Application
HIGH TEMPERATURE RESISTANT PORTLAND CEMENT SLURRY AND PRODUCTION ME...
Publication number
20190241792
Publication date
Aug 8, 2019
CHINA NATIONAL PETROLEUM CORPORATION
Hua ZHANG
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES