Xiangzhi CHENG

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for obtaining conversion relationship between dynamic and st...
- Patent number 11,175,207
- Issue date Nov 16, 2021
- PetroChina Company Limited
- Zhonghua Liu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus of determining stiffness coefficients of forma...
- Patent number 10,031,250
- Issue date Jul 24, 2018
- PetroChina Company Limited
- Zhonghua Liu
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR OBTAINING CONVERSION RELATIONSHIP BETWEEN DYNAMIC AND ST...
- Publication number 20190265142
- Publication date Aug 29, 2019
- Petrochina Company Limited
- Zhonghua Liu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND APPARATUS OF DETERMINING STIFFNESS COEFFICIENTS OF FORMA...
- Publication number 20160186557
- Publication date Jun 30, 2016
- Petrochina Company Limited
- Zhonghua LIU
- G01 - MEASURING TESTING