Radiating element and associated antenna and manufacturing method
US-2022407234-A1 · Dec 22, 2022 · US
continuously variable, e.g. variometers
continuously variable, e.g. variometers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F21/02 |
| Official title | continuously variable, e.g. variometers |
| Display label | continuously variable, e.g. variometers |
| Total patents | 78 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 7 |
| 2017 | 12 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 9 |
| 2021 | 10 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 5 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Adjustable leakage inductance transformer
US-11489449-B2 · Nov 1, 2022 · US
Device having a multimode antenna with variable width of conductive wire
US-11469598-B2 · Oct 11, 2022 · US
Lossless continuously adjustable devices
US-2022228652-A1 · Jul 21, 2022 · US
Magnetically actuated tunable soft electronics
US-11380469-B2 · Jul 5, 2022 · US
Switched coupled inductance phase shift mechanism
US-2022123468-A1 · Apr 21, 2022 · US
Reconfigurable inductor
US-11211866-B2 · Dec 28, 2021 · US
Switched coupled inductance phase shift mechanism
US-11211704-B2 · Dec 28, 2021 · US
Device having a multimode antenna with conductive wire width
US-11196266-B2 · Dec 7, 2021 · US
Tuning systems, devices and methods
US-11195647-B2 · Dec 7, 2021 · US
Superconducting tunable inductance
US-2021375516-A1 · Dec 2, 2021 · US
Electronically adjustable inductor circuit
US-11050402-B2 · Jun 29, 2021 · US
Device having a multimode antenna with at least one conductive wire with a plurality of turns
US-11025070-B2 · Jun 1, 2021 · US
Integrated circuit comprising a variable inductor
US-11017940-B2 · May 25, 2021 · US
Electronically Adjustable Inductor Circuit
US-2021091744-A1 · Mar 25, 2021 · US
Reconfigurable inductor
US-2021036618-A1 · Feb 4, 2021 · US
Tuning systems, devices and methods
US-2020395157-A1 · Dec 17, 2020 · US
Switched coupled inductance phase shift mechanism
US-2020381825-A1 · Dec 3, 2020 · US
Magnetically actuated tunable soft electronics
US-2020286657-A1 · Sep 10, 2020 · US
Tuning systems, devices, and methods
US-10763023-B2 · Sep 1, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F21/02?
- CPC H01F21/02 is the Cooperative Patent Classification code for “continuously variable, e.g. variometers.”
- How many patents are filed under CPC H01F21/02 (continuously variable, e.g. variometers)?
- Our database includes 78 publications tagged with this CPC code.
- Is patent activity under CPC H01F21/02 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).