Jiaxian Ou

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Foshan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Valve structure with built-in valve seat of pre-action warning valve
- Patent number 11,766,580
- Issue date Sep 26, 2023
- GUANGDONG YONGQUAN VALVE TECHNOLOGY CO., LTD
- Jiongliang Chen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
VALVE STRUCTURE WITH BUILT-IN VALVE SEAT OF PRE-ACTION WARNING VALVE
- Publication number 20220170567
- Publication date Jun 2, 2022
- GUANGDONG YONGQUAN VALVE TECHNOLOGY CO., LTD
- JIONGLIANG CHEN
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Reduced-Pressure Type Backflow Preventer
- Publication number 20190249778
- Publication date Aug 15, 2019
- GUANGDONG YONGQUAN VALVE TECHNOLOGY CO., LTD
- Dawen Huo
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...