Shijun Yu

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Rotary four-way reversing valve with low pressure drop and low leakage
- Patent number 10,330,359
- Issue date Jun 25, 2019
- SHANGHAI GOLDAIR ELECTRIC SYSTEM CO., LTD.
- Shijun Yu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Rotation type flow path switching valve
- Patent number 9,958,082
- Issue date May 1, 2018
- ZHEJIANG SANHUA ROTARY VALVE CO., LTD.
- Shijun Yu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Hard seal plug valve
- Patent number 9,022,352
- Issue date May 5, 2015
- Shanghai Goldar Electric System Co., Ltd.
- Shijun Yu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Rotation-type flow path switching valve
- Publication number 20170059055
- Publication date Mar 2, 2017
- ZHEJIANG SANHUA ROTARY VALVE CO., LTD.
- Shijun YU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Rotary Four-way Reversing Valve with Low Pressure Drop and Low Leakage
- Publication number 20160334151
- Publication date Nov 17, 2016
- SHANGHAI GOLDAIR ELECTRIC SYSTEM CO., LTD.
- Shijun YU
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Hard Seal Plug Valve
- Publication number 20130292593
- Publication date Nov 7, 2013
- SHANGHAI GOLDAR ELECTRIC SYSTEM CO., LTD.
- Shijun Yu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
FLOATING CONICAL PLUG VALVE
- Publication number 20110198525
- Publication date Aug 18, 2011
- Shijun Yu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...