Relay driving apparatus for controlling operation of multiple switches
US-12537154-B2 · Jan 27, 2026 · US
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by switching-in or -out impedance external to the relay winding
by switching-in or -out impedance external to the relay winding · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H47/10 |
| Official title | by switching-in or -out impedance external to the relay winding |
| Display label | by switching-in or -out impedance external to the relay winding |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 3 |
| 2023 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Relay driving device
US-2024258056-A1 · Aug 1, 2024 · US
Relay circuit and electric junction box
US-11553573-B2 · Jan 10, 2023 · US
Relay control device
US-11152176-B2 · Oct 19, 2021 · US
Air conditioner having relay coil abnormality voltage control
US-11009254-B2 · May 18, 2021 · US
Relay circuit and electric junction box
US-2021027962-A1 · Jan 28, 2021 · US
Relay control device
US-2020321177-A1 · Oct 8, 2020 · US
Circuit arrangement for operating electromagnetic drive systems
US-10755881-B2 · Aug 25, 2020 · US
Air conditioner
US-2019368767-A1 · Dec 5, 2019 · US
Circuit arrangement for operating electromagnetic drive systems
US-2018366288-A1 · Dec 20, 2018 · US
Coil actuator for a switching device and related switching device
US-9620319-B2 · Apr 11, 2017 · US
Electromagnetic contactor
US-9543101-B2 · Jan 10, 2017 · US
Relay drive device
US-9530597-B2 · Dec 27, 2016 · US
Magnetic contactor
US-9514897-B2 · Dec 6, 2016 · US
Electric vehicle support equipment having a smart plug with a relay control circuit
US-9437381-B2 · Sep 6, 2016 · US
Magnetic contactor
US-9275814-B2 · Mar 1, 2016 · US
Electromagnetic contactor
US-2016049273-A1 · Feb 18, 2016 · US
Relay drive device
US-2015279597-A1 · Oct 1, 2015 · US
Magnetic contactor
US-2015179359-A1 · Jun 25, 2015 · US
Magnetic contactor
US-2015109713-A1 · Apr 23, 2015 · US