Jingqing DU

Follow

Person

Beijing, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Gas flow regulating device and mass flow controller
- Patent number 11,320,055
- Issue date May 3, 2022
- BEIJING SEVENSTAR FLOW CO., LTD
- Jingqing Du
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
GAS FLOW REGULATING DEVICE AND MASS FLOW CONTROLLER
- Publication number 20210332895
- Publication date Oct 28, 2021
- BEIJING SEVENSTAR FLOW CO., LTD.
- Jingqing DU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...