Zhidan Yan

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QingDao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Oscillating shear valve of continuous pulse generator
- Patent number 11,886,535
- Issue date Jan 30, 2024
- CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
- Zhidan Yan
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Dynamic point-the-bit rotary steerable drilling tool and measuring...
- Patent number 9,587,440
- Issue date Mar 7, 2017
- China University of Petroleum
- Weiliang Wang
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
OSCILLATING SHEAR VALVE OF CONTINUOUS PULSE GENERATOR
- Publication number 20230418892
- Publication date Dec 28, 2023
- China University of Petroleum (East China)
- Zhidan YAN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Dynamic Point-the-bit Rotary Steerable Drilling Tool and Measuring...
- Publication number 20160281492
- Publication date Sep 29, 2016
- China University of Petroleum
- Weiliang Wang
- E21 - EARTH DRILLING MINING