Engineering Technology Research Institute, Southwest Oil and Gas Field Company of Petro China

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Sichuan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Intermediate gas concentration-regulating piston pressure device fo...
- Patent number 11,583,822
- Issue date Feb 21, 2023
- Southwest Petroleum University
- Zhi Zhang
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Sealing integrity evaluation device for high-temperature and high-p...
- Publication number 20210231520
- Publication date Jul 29, 2021
- Southwest Petroleum University
- Zhi Zhang
- G01 - MEASURING TESTING

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