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Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range
Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond 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 | H01F19/02 |
| Official title | Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range |
| Display label | Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
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