Transformer device
US-12266463-B2 · Apr 1, 2025 · US
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Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range
Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F19/06 |
| Official title | Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range |
| Display label | Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 4 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Transformer and radio frequency module
US-2024333238-A1 · Oct 3, 2024 · US
Coil device, phase shift circuit, and communication apparatus
US-11961651-B2 · Apr 16, 2024 · US
Matching circuit, matching circuit element, and communication device
US-11777466-B2 · Oct 3, 2023 · US
Digital isolator
US-2023283173-A1 · Sep 7, 2023 · US
Triple inductor transformer for multiband radio frequency integrated circuits
US-11393619-B2 · Jul 19, 2022 · US
Transformer device
US-2022208435-A1 · Jun 30, 2022 · US
Coil device, phase shift circuit, and communication apparatus
US-2021335533-A1 · Oct 28, 2021 · US
Matching circuit, matching circuit element, and communication device
US-2021297052-A1 · Sep 23, 2021 · US
Network transformer module
US-10796838-B2 · Oct 6, 2020 · US
Embedded magnetic component transformer device
US-10573457-B2 · Feb 25, 2020 · US
Triple inductor transformer for multiband radio frequency integrated circuits
US-2019378640-A1 · Dec 12, 2019 · US
Network transformer module
US-2019043652-A1 · Feb 7, 2019 · US
Enhanced coupler performance winding approach
US-9780758-B2 · Oct 3, 2017 · US
Complex circuit, circuit device, circuit board, and communication device
US-9722570-B2 · Aug 1, 2017 · US
Complex circuit, circuit device, circuit board, and communication device
US-2017170800-A1 · Jun 15, 2017 · US
Enhanced coupler performance winding approach
US-2017033762-A1 · Feb 2, 2017 · US
Wideband sonar with pulse compression
US-9423494-B2 · Aug 23, 2016 · US
Embedded magnetic component transformer device
US-2016111965-A1 · Apr 21, 2016 · US