Pengfei Sang

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Chengdu, CN

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Patents Grantslast 30 patents

Information Patent Grant
Sealing integrity evaluation device for high-temperature and high-...
- Patent number 11,733,121
- Issue date Aug 22, 2023
- Southwest Petroleum University
- Zhi Zhang
- E21 - EARTH DRILLING MINING
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
Information Patent Grant
Rotary fatigue tester with complex loads
- Patent number 11,378,501
- Issue date Jul 5, 2022
- Southwest Petroleum University
- Zhi Zhang
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
INTERMEDIATE GAS CONCENTRATION-REGULATING PISTON PRESSURE DEVICE FO...
- Publication number 20210260547
- Publication date Aug 26, 2021
- Southwest Petroleum University
- Zhi Zhang
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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
Information Patent Application
Rotary fatigue tester with complex loads
- Publication number 20200225135
- Publication date Jul 16, 2020
- Southwest Petroleum University
- Zhi Zhang
- G01 - MEASURING TESTING