Inventor · disambiguated record
Wenguang Dai
Also filed as: DAI WENGUANG
23 granted patents·38 pending applications·16 citations·filing 2017–2025
91Inventor score
Top patents by PatentIndex Score
61 records- 0196US12243700B2Short circuit current-resistant and arc-extinguishing DC relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2020·Granted Mar 4, 2025·4 cites·17 claims
- 0294US11670472B2Direct-current relay resistant to short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2019·Granted Jun 6, 2023·8 cites·22 claims
- 0385US12009172B2High-voltage DC relay with auxiliary contactXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2022·Granted Jun 11, 2024·1 cites·10 claims
- 0482US12027334B2Direct-current relay capable of extinguishing arc and resisting short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Granted Jul 2, 2024·0 cites·15 claims
- 0582US12027333B2Direct-current relay capable of extinguishing arc and resisting short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Granted Jul 2, 2024·0 cites·15 claims
- 0682US12027335B2Direct-current relay capable of extinguishing arc and resisting short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Granted Jul 2, 2024·0 cites·16 claims
- 0782US12020881B2Direct-current relay having a function of extinguishing ARC and resisting short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Granted Jun 25, 2024·0 cites·14 claims
- 0882US12020880B2Direct-current relay having a function of extinguishing arc and resisting short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Granted Jun 25, 2024·0 cites·12 claims
- 0980US2025299897A1High-voltage dc relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2025·Application pending·0 cites
- 1080US2025308823A1High-voltage dc relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2025·Application pending·0 cites
- 1179US2025308822A1High-voltage dc relayXiamen Hongfa Electric Power·Filed 2025·Application pending·0 cites
- 1278US11501939B2High-voltage DC relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2020·Granted Nov 15, 2022·1 cites·23 claims
- 1377US12368014B2High-voltage DC relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Granted Jul 22, 2025·0 cites·11 claims
- 1477US2025349480A1Connecting structure between lead-out pins of auxiliary stationary contacts and yoke plate of dc relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2025·Application pending·0 cites
- 1573US12002641B2High-voltage DC relay having a movable pieceXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2022·Granted Jun 4, 2024·0 cites·19 claims
- 1671US12488954B2Relay having a pressure relief valve assemblyXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Granted Dec 2, 2025·0 cites·23 claims
- 1771US2025149281A1Dc relay for anti-short circuit current and arc extinctionXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2025·Application pending·0 cites
- 1871US2025149280A1Dc relay for anti-short circuit current and arc extinctionXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2025·Application pending·0 cites
- 1970US12354819B2High-voltage DC relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2021·Granted Jul 8, 2025·0 cites·12 claims
- 2069US11476070B2Magnetic latching relay capable of accurately positioning magnetic circuitXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2021·Granted Oct 18, 2022·0 cites·9 claims
- 2166US12482621B2Connecting structure between lead-out pins of auxiliary stationary contacts and yoke plate of DC relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2021·Granted Nov 25, 2025·0 cites·9 claims
- 2264US12424405B2High-voltage DC relay with auxiliary contactXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2021·Granted Sep 23, 2025·0 cites·16 claims
- 2360US2025095939A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 2458US2024347299A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 2557US11031202B2Magnetic latching relay capable of resisting short-circuit currentXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2017·Granted Jun 8, 2021·0 cites·11 claims
- 2657US2024387135A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 2757US2024387132A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 2857US2024395488A1Contact part and relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 2957US2024387137A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3057US2024387136A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3157US2024387138A1Fixing frame and magnetic latching relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3257US2024387131A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3356US2024347298A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3456US2024387134A1Contact piece structure and magnetic holding relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3556US2024387133A1Contact piece structure and magnetic latching relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3655US2025095936A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3755US2025095940A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3855US2025095935A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 3954US2024347297A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4054US2024347303A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4153US2024347301A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4253US2024347302A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4353US2024387130A1Magnetic latching relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4453US2025087438A1Magnetic circuit system with enhanced initial electromagnetic attraction and high-voltage dc relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2022·Application pending·0 cites
- 4553US2025379016A1Noise reduction gasket and relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2023·Application pending·0 cites
- 4652US2024347300A1RelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4752US2025140501A1Push rod assembly, manufacturing method thereof and relayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2024·Application pending·0 cites
- 4851US12183534B2High-voltage direct current relay capable of improving insulation capabilityXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2022·Granted Dec 31, 2024·0 cites·15 claims
- 4950USD1042364SRelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2022·Granted Sep 17, 2024·1 cites·1 claims
- 5050USD1042363SRelayXIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD·Filed 2022·Granted Sep 17, 2024·1 cites·1 claims
Showing the top 50 of 61 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →