Min CHANG

Person

Shanghai, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Method for modifying gas density relay, and gas density relay havin...
- Patent number 12,154,738
- Issue date Nov 26, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Haiyong Jin
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Transformation method for gas density relay, and gas density relay...
- Patent number 12,136,530
- Issue date Nov 5, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Tiexin Xia
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for modifying gas density relay, and gas density relay havin...
- Patent number 12,099,093
- Issue date Sep 24, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Min Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrical system with on-line sampling verification function and v...
- Patent number 12,046,433
- Issue date Jul 23, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Haiyong Jin
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrical system with on-line sampling verification function and v...
- Patent number 12,038,480
- Issue date Jul 16, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Tiexin Xia
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact signal acquisition circuit for on-site on-line check of gas...
- Patent number 11,988,713
- Issue date May 21, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Wei Zeng
- G01 - MEASURING TESTING
Information Patent Grant
High anti-vibration gas density monitor
- Patent number 11,885,827
- Issue date Jan 30, 2024
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Libo Luo
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
GAS DENSITY RELAY WITH ONLINE SELF-CHECKING FUNCTION, AND CHECKING...
- Publication number 20230160800
- Publication date May 25, 2023
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Xiaobeng HUANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR MODIFYING GAS DENSITY RELAY, AND GAS DENSITY RELAY HAVIN...
- Publication number 20220390518
- Publication date Dec 8, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Min CHANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ELECTRICAL SYSTEM WITH ON-LINE SAMPLING VERIFICATION FUNCTION AND V...
- Publication number 20220341993
- Publication date Oct 27, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Tiexin XIA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
TRANSFORMATION METHOD FOR GAS DENSITY RELAY, AND GAS DENSITY RELAY...
- Publication number 20220336170
- Publication date Oct 20, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Tiexin XIA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
METHOD FOR MODIFYING GAS DENSITY RELAY, AND GAS DENSITY RELAY HAVIN...
- Publication number 20220336172
- Publication date Oct 20, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Haiyong JIN
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ELECTRICAL SYSTEM WITH ON-LINE SAMPLING VERIFICATION FUNCTION AND V...
- Publication number 20220336171
- Publication date Oct 20, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Haiyong JIN
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FIELD DETECTION DEVICE, SYSTEM AND METHOD FOR ACHIEVING NO MAINTENA...
- Publication number 20220334184
- Publication date Oct 20, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Min CHANG
- G05 - CONTROLLING REGULATING
Information Patent Application
MAINTENANCE-FREE GAS DENSITY RELAY AND CROSS-CHECKING METHOD THEREFOR
- Publication number 20220336169
- Publication date Oct 20, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Haiyong JIN
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High Anti-Vibration Gas Density Monitor
- Publication number 20220317008
- Publication date Oct 6, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Libo Luo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CONTACT SIGNAL ACQUISITION CIRCUIT FOR ON-SITE ON-LINE CHECK OF GAS...
- Publication number 20220308112
- Publication date Sep 29, 2022
- SHANGHAI ROYE ELECTRIC CO., LTD.
- Wei ZENG
- H01 - BASIC ELECTRIC ELEMENTS

Person

Patents Grantslast 30 patents

Method for modifying gas density relay, and gas density relay havin...

Transformation method for gas density relay, and gas density relay...

Method for modifying gas density relay, and gas density relay havin...

Electrical system with on-line sampling verification function and v...

Electrical system with on-line sampling verification function and v...

Contact signal acquisition circuit for on-site on-line check of gas...

High anti-vibration gas density monitor

Patents Applicationslast 30 patents

GAS DENSITY RELAY WITH ONLINE SELF-CHECKING FUNCTION, AND CHECKING...

METHOD FOR MODIFYING GAS DENSITY RELAY, AND GAS DENSITY RELAY HAVIN...

ELECTRICAL SYSTEM WITH ON-LINE SAMPLING VERIFICATION FUNCTION AND V...

TRANSFORMATION METHOD FOR GAS DENSITY RELAY, AND GAS DENSITY RELAY...

METHOD FOR MODIFYING GAS DENSITY RELAY, AND GAS DENSITY RELAY HAVIN...

ELECTRICAL SYSTEM WITH ON-LINE SAMPLING VERIFICATION FUNCTION AND V...

FIELD DETECTION DEVICE, SYSTEM AND METHOD FOR ACHIEVING NO MAINTENA...

MAINTENANCE-FREE GAS DENSITY RELAY AND CROSS-CHECKING METHOD THEREFOR

High Anti-Vibration Gas Density Monitor

CONTACT SIGNAL ACQUISITION CIRCUIT FOR ON-SITE ON-LINE CHECK OF GAS...