Hongfei Ji

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Beijing City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Well cementing method for improving well cementing quality by contr...
- Patent number 11,926,787
- Issue date Mar 12, 2024
- PetroChina Company Limited
- Shuoqiong Liu
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
SET CEMENT MECHANICAL PROPERTIES PARAMETER MEASUREMENT METHOD AND A...
- Publication number 20240288348
- Publication date Aug 29, 2024
- CHINA NATIONAL PETROLEUM CORPORATION
- Jiyun SHEN
- G01 - MEASURING TESTING
Information Patent Application
CEMENT SLURRY SYSTEM, PREPARATION METHOD THEREFOR AND USE THEREOF
- Publication number 20240228858
- Publication date Jul 11, 2024
- CHINA NATIONAL PETROLEUM CORPORATION
- Jianzhou JIN
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH TEMPERATURE CEM...
- Publication number 20230278927
- Publication date Sep 7, 2023
- CHINA NATIONAL PETROLEUM CORPORATION
- Hua Zhang
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Application
Well Cementing Method for Improving Well Cementing Quality by Contr...
- Publication number 20200399525
- Publication date Dec 24, 2020
- Shuoqiong Liu
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...