Coil component
US-12567531-B2 · Mar 3, 2026 · US
with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00})
with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00}) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F29/14 |
| Official title | with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00}) |
| Display label | with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00}) |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 5 |
| 2018 | 12 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Magnetic component
US-2026031270-A1 · Jan 29, 2026 · US
Multi-core segment variable inductor with different core materials, and control circuit and control method thereof
US-2025253081-A1 · Aug 7, 2025 · US
Tunable inductor and methods to realize tunable inductor
US-2025132088-A1 · Apr 24, 2025 · US
Magnetically controllable choke coil having central connection
US-12272490-B2 · Apr 8, 2025 · US
Multi-phase transformer
US-12211640-B2 · Jan 28, 2025 · US
Charging Station for Electric Vehicles
US-2024270093-A1 · Aug 15, 2024 · US
Reactor
US-12020840-B2 · Jun 25, 2024 · US
Magnetically controllable inductor coil in a series circuit
US-12009662-B2 · Jun 11, 2024 · US
Circuit assembly, electrolysis device, and method for operating a circuit assembly or an electrolysis device
US-11848602-B2 · Dec 19, 2023 · US
Coil component
US-2023053145-A1 · Feb 16, 2023 · US
Broadband antenna matching network employing energy recovery schemes
US-11569684-B1 · Jan 31, 2023 · US
Magnetic components with electrically variable characteristics
US-11502614-B2 · Nov 15, 2022 · US
Continuously adjustable saturable reactor
US-11495968-B2 · Nov 8, 2022 · US
Magnetically controllable throttle for reactive power compensation having capacitively connected auxiliary windings
US-11489340-B2 · Nov 1, 2022 · US
Transformer and Device Configured to Provide a Current Limiting Power Source and a Galvanic Barrier
US-2022336148-A1 · Oct 20, 2022 · US
Circuit assembly, electrolysis device, and method for operating a circuit assembly or an electrolysis device
US-2022181965-A1 · Jun 9, 2022 · US
Multi-phase transformer
US-2022122767-A1 · Apr 21, 2022 · US
Magnetically controllable inductor coil in a series circuit
US-2022085732-A1 · Mar 17, 2022 · US
Methods and apparatus for biasing a magnetic circuit to reduce audible noise from a switching power supply
US-11250984-B2 · Feb 15, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F29/14?
- CPC H01F29/14 is the Cooperative Patent Classification code for “with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00}).”
- How many patents are filed under CPC H01F29/14 (with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00}))?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC H01F29/14 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).