Detecting welded relay contacts using spanner voltage measurement
US-12461156-B2 · Nov 4, 2025 · US
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Inversing contactors (H01H50/323 takes precedence)
Inversing contactors (H01H50/323 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H51/005 |
| Official title | {Inversing contactors (H01H50/323 takes precedence)} |
| Display label | Inversing contactors (H01H50/323 takes precedence) |
| Total patents | 15 |
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 | 3 |
| 2017 | 3 |
| 2019 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Detecting welded relay contacts using spanner voltage measurement
US-2024426915-A1 · Dec 26, 2024 · US
Method of mounting an interlock module between two contactors and an interlock module
US-11929228-B2 · Mar 12, 2024 · US
Universal control module for a reversing contactor
US-11778759-B2 · Oct 3, 2023 · US
Method of mounting an interlock module between two contactors and an interlock module
US-2022384124-A1 · Dec 1, 2022 · US
Switching device for a wye-delta switch in a multiphase motor
US-10283297-B2 · May 7, 2019 · US
Portable load balancing and source optimization
US-9793715-B2 · Oct 17, 2017 · US
Electrical switching device
US-9583289-B2 · Feb 28, 2017 · US
Switching device for a wye-delta switch in a multiphase motor
US-2017032916-A1 · Feb 2, 2017 · US
Electrical switching device
US-2016293367-A1 · Oct 6, 2016 · US
Portable load balancing and source optimization
US-2016064932-A1 · Mar 3, 2016 · US
Safety switching device for setting a safety-related device to a safe state
US-9239572-B2 · Jan 19, 2016 · US
Magnetic contactor
US-9202642-B2 · Dec 1, 2015 · US
Magnetic contactor
US-2015130569-A1 · May 14, 2015 · US
Electric switching system comprising an electric switching module including two elements coupling a contact(S)-holder with its driving device
US-9019050-B2 · Apr 28, 2015 · US