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Fujian, CN
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Patents Grants
last 30 patents
Information
Patent Grant
High-voltage direct current relay capable of improving insulation c...
Patent number
12,183,534
Issue date
Dec 31, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Wenguang Dai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Direct-current relay capable of extinguishing arc and resisting sho...
Patent number
12,027,335
Issue date
Jul 2, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Direct-current relay capable of extinguishing arc and resisting sho...
Patent number
12,027,334
Issue date
Jul 2, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Direct-current relay capable of extinguishing arc and resisting sho...
Patent number
12,027,333
Issue date
Jul 2, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Direct-current relay having a function of extinguishing ARC and res...
Patent number
12,020,881
Issue date
Jun 25, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Direct-current relay having a function of extinguishing arc and res...
Patent number
12,020,880
Issue date
Jun 25, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Direct-current relay resistant to short-circuit current
Patent number
11,670,472
Issue date
Jun 6, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
RELAY
Publication number
20240128038
Publication date
Apr 18, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Wenguang DAI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DIRECT-CURRENT RELAY CAPABLE OF EXTINGUISHING ARC AND RESISTING SHO...
Publication number
20230260732
Publication date
Aug 17, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DIRECT-CURRENT RELAY HAVING A FUNCTION OF EXTINGUISHING ARC AND RES...
Publication number
20230260733
Publication date
Aug 17, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DIRECT-CURRENT RELAY CAPABLE OF EXTINGUISHING ARC AND RESISTING SHO...
Publication number
20230260734
Publication date
Aug 17, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DIRECT-CURRENT RELAY CAPABLE OF EXTINGUISHING ARC AND RESISTING SHO...
Publication number
20230260730
Publication date
Aug 17, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DIRECT-CURRENT RELAY HAVING A FUNCTION OF EXTINGUISHING ARC AND RES...
Publication number
20230260731
Publication date
Aug 17, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
HIGH-VOLTAGE DIRECT CURRENT RELAY CAPABLE OF IMPROVING INSULATION C...
Publication number
20230154695
Publication date
May 18, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Wenguang Dai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DIRECT-CURRENT RELAY RESISTANT TO SHORT-CIRCUIT CURRENT
Publication number
20220013316
Publication date
Jan 13, 2022
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS