Inventor
ZHONG SHUMING
CN25 patents
Patents
25 patentsUS11670472B2Jun 6, 2023
Direct-current relay resistant to short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD8 citations84
US12243700B2Mar 4, 2025
Short circuit current-resistant and arc-extinguishing DC relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD4 citations74
US10854410B2Dec 1, 2020
High-voltage direct-current relay and assembly method therefor
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD4 citations68
US10068731B2Sep 4, 2018
Framework of relay and relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD5 citations68
US12027334B2Jul 2, 2024
Direct-current relay capable of extinguishing arc and resisting short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations61
US12027335B2Jul 2, 2024
Direct-current relay capable of extinguishing arc and resisting short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations61
US12027333B2Jul 2, 2024
Direct-current relay capable of extinguishing arc and resisting short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations61
US12020880B2Jun 25, 2024
Direct-current relay having a function of extinguishing arc and resisting short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations61
US12020881B2Jun 25, 2024
Direct-current relay having a function of extinguishing ARC and resisting short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations61
US11476070B2Oct 18, 2022
Magnetic latching relay capable of accurately positioning magnetic circuit
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations59
US11031202B2Jun 8, 2021
Magnetic latching relay capable of resisting short-circuit current
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations59
USD1062654SFeb 18, 2025
Relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations58
USD1042364SSep 17, 2024
Relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD1 citations58
USD1042363SSep 17, 2024
Relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD1 citations58
US12002641B2Jun 4, 2024
High-voltage DC relay having a movable piece
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations58
US11501939B2Nov 15, 2022
High-voltage DC relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD1 citations58
US12482621B2Nov 25, 2025
Connecting structure between lead-out pins of auxiliary stationary contacts and yoke plate of DC relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations56
US12368014B2Jul 22, 2025
High-voltage DC relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations56
US12009172B2Jun 11, 2024
High-voltage DC relay with auxiliary contact
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD1 citations56
US12424405B2Sep 23, 2025
High-voltage DC relay with auxiliary contact
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations51
US12354819B2Jul 8, 2025
High-voltage DC relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations47
US11164711B2Nov 2, 2021
DC contactor with dual micro switches
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations47
US12080501B2Sep 3, 2024
High-voltage direct-current magnetic latching relay with sensitive response
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations45
US12394583B2Aug 19, 2025
Hinge type bistable magnetic circuit structure and magnetic latching relay
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD0 citations44
US9640336B2May 2, 2017
Magnetic latching relay having asymmetrical solenoid structure
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD1 citations42