Xiaotao Zhang

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for determining karst development degree of reser...
- Patent number 10,641,088
- Issue date May 5, 2020
- PetroChina Company Limited
- Ning Li
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Method and Device for Determining Karst Development Degree of Reser...
- Publication number 20180274364
- Publication date Sep 27, 2018
- Ning Li
- G06 - COMPUTING CALCULATING COUNTING