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Songsheng CHEN
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Xiamen, CN
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Patents Grants
last 30 patents
Information
Patent Grant
DC contactor with dual micro switches
Patent number
11,164,711
Issue date
Nov 2, 2021
Xiamen Hongfa Electric Power Controls Co., Ltd.
Songsheng Chen
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
HIGH-VOLTAGE DC RELAY WITH PERMANENT MAGNET ARC EXTINGUISHING FUNCTION
Publication number
20240145188
Publication date
May 2, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Wenguang DAI
H01 - BASIC ELECTRIC ELEMENTS
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
HIGH-VOLTAGE DIRECT-CURRENT MAGNETIC LATCHING RELAY WITH SENSITIVE...
Publication number
20240006139
Publication date
Jan 4, 2024
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming ZHONG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
RELAY
Publication number
20230335360
Publication date
Oct 19, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Wenguang DAI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
CONNECTING STRUCTURE BETWEEN LEAD-OUT PINS OF AUXILIARY STATIONARY...
Publication number
20230178319
Publication date
Jun 8, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
HIGH-VOLTAGE DC RELAY
Publication number
20230178318
Publication date
Jun 8, 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
HIGH-VOLTAGE DC RELAY WITH AUXILIARY CONTACT
Publication number
20230090245
Publication date
Mar 23, 2023
Xiamen Hongfa Electric Power Controls Co., Ltd.
Shuming Zhong
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
DC CONTACTOR WITH DUAL MICRO SWITCHES
Publication number
20200035432
Publication date
Jan 30, 2020
Xiamen Hongfa Electric Power Controls Co., Ltd,
Songsheng CHEN
H01 - BASIC ELECTRIC ELEMENTS