Gas circuit breaker
US-12057278-B2 · Aug 6, 2024 · US
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Variable impedances
Variable impedances · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/161 |
| Official title | {Variable impedances} |
| Display label | Variable impedances |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 2 |
| 2024 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Switching device comprising two interrupter units connected in series
US-12057279-B2 · Aug 6, 2024 · US
Breaking device
US-11972915-B2 · Apr 30, 2024 · US
Gas circuit breaker
US-2022351925-A1 · Nov 3, 2022 · US
Breaking device
US-2022208490-A1 · Jun 30, 2022 · US
Contact arrangement for pre-insertion resistor
US-11127550-B2 · Sep 21, 2021 · US
Circuit breaker system with an internal voltage limiter
US-11101646-B2 · Aug 24, 2021 · US
Dead tank circuit breaker surge arrester
US-10896797-B2 · Jan 19, 2021 · US
Dead tank circuit breaker surge arrester
US-2020388456-A1 · Dec 10, 2020 · US
Contact arrangement for pre-insertion resistor
US-2020388454-A1 · Dec 10, 2020 · US
On-load tap changing apparatus and on-load tap changing system
US-2020043650-A1 · Feb 6, 2020 · US
Circuit breaker system with an internal voltage limiter
US-2019326748-A1 · Oct 24, 2019 · US
Power switchgear having surge suppression apparatus
US-9893515-B2 · Feb 13, 2018 · US
Dead tank circuit breaker with surge arrester connected across the bushing tops of each pole
US-9728362-B2 · Aug 8, 2017 · US
Circuit arrangement for suppressing an arc occurring over a contact gap of a switching member
US-9543088-B2 · Jan 10, 2017 · US
Gas insulated electrical equipment
US-9508507-B2 · Nov 29, 2016 · US
Dead Tank Circuit Breaker With Surge Arrester Connected Across The Bushing Tops Of Each Pole
US-2015364285-A1 · Dec 17, 2015 · US
Gas insulated electrical equipment
US-2015262773-A1 · Sep 17, 2015 · US
Power switchgear
US-2015180224-A1 · Jun 25, 2015 · US