Variable inductor device comprising first and second planar loops configured to be separable by pivoting about a hinge
US-12488938-B2 · Dec 2, 2025 · US
having movable coil, winding, or part thereof; having movable shield
having movable coil, winding, or part thereof; having movable shield · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F29/12 |
| Official title | having movable coil, winding, or part thereof; having movable shield |
| Display label | having movable coil, winding, or part thereof; having movable shield |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of transformer
US-12242786-B2 · Mar 4, 2025 · US
Pcb-based stranded, twisted excitation windings in rotary transformers
US-2024355540-A1 · Oct 24, 2024 · US
Variable inductive displacement sensor, associated device, system and aircraft
US-12092495-B2 · Sep 17, 2024 · US
Device for a wireless power transfer system
US-11909222-B2 · Feb 20, 2024 · US
Variable inductive displacement sensor, associated device, system and aircraft
US-2023068680-A1 · Mar 2, 2023 · US
Variable inductor device
US-2022230802-A1 · Jul 21, 2022 · US
Design method of transformer
US-2022164512-A1 · May 26, 2022 · US
Device for a wireless power transfer system
US-2021194283-A1 · Jun 24, 2021 · US
Electrical component
US-11043330-B2 · Jun 22, 2021 · US
Inductance adjusting device
US-10878989-B2 · Dec 29, 2020 · US
Three-phase reactor
US-10741319-B2 · Aug 11, 2020 · US
Power converting device and image forming apparatus employing the same
US-10671010-B2 · Jun 2, 2020 · US
Coil device
US-10600561-B2 · Mar 24, 2020 · US
Reactor and step-up circuit
US-10546682-B2 · Jan 28, 2020 · US
Coil device and inductance-changing mechanism
US-10446316-B2 · Oct 15, 2019 · US
Reactor and step-up circuit
US-2019221360-A1 · Jul 18, 2019 · US
Power converting device and image forming apparatus employing the same
US-2019212690-A1 · Jul 11, 2019 · US
Reactor
US-2019198214-A1 · Jun 27, 2019 · US
Inductance adjusting device
US-2019139691-A1 · May 9, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F29/12?
- CPC H01F29/12 is the Cooperative Patent Classification code for “having movable coil, winding, or part thereof; having movable shield.”
- How many patents are filed under CPC H01F29/12 (having movable coil, winding, or part thereof; having movable shield)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC H01F29/12 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).