Coil unit and coil unit installation structure
US-2026012039-A1 · Jan 8, 2026 · US
Arrangements for interchanging inductances, transformers or coils thereof
Arrangements for interchanging inductances, transformers or coils thereof · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F27/004 |
| Official title | {Arrangements for interchanging inductances, transformers or coils thereof} |
| Display label | Arrangements for interchanging inductances, transformers or coils thereof |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electronic component
US-12154707-B2 · Nov 26, 2024 · US
Tunable inductor arrangement, transceiver, method and computer program
US-11854728-B2 · Dec 26, 2023 · US
Assembly for connecting to a high-voltage grid
US-11626244-B2 · Apr 11, 2023 · US
Assembly for connection to a high-voltage system with adjustable impedance
US-11594368-B2 · Feb 28, 2023 · US
Tunable Inductor Arrangement, Transceiver, Method and Computer Program
US-2022415554-A1 · Dec 29, 2022 · US
Flexible transformer system
US-11538614-B2 · Dec 27, 2022 · US
Current adaptive reactor structure
US-11476031-B1 · Oct 18, 2022 · US
Tunable inductor arrangement, transceiver, method and computer program
US-11456102-B2 · Sep 27, 2022 · US
Electronic component
US-2022059271-A1 · Feb 24, 2022 · US
Transformer system
US-11087913-B2 · Aug 10, 2021 · US
Flexible transformer system
US-2021151235-A1 · May 20, 2021 · US
Tunable Inductor Arrangement, Transceiver, Method and Computer Program
US-2021134507-A1 · May 6, 2021 · US
Flyback power supply, inverter and electrically powered vehicle
US-10978953-B2 · Apr 13, 2021 · US
Container arrangement for a mobile power transformer unit
US-2021066896-A1 · Mar 4, 2021 · US
Tunable inductor arrangement, transceiver, method and computer program
US-10916364-B2 · Feb 9, 2021 · US
Electronic circuit of electronic pen and electronic pen
US-10802614-B2 · Oct 13, 2020 · US
Method for servicing a transformer and transformer arrangement
US-2020258669-A1 · Aug 13, 2020 · US
Assembly for connecting to a high-voltage grid
US-2020234875-A1 · Jul 23, 2020 · US
Assembly for connection to a high-voltage system with adjustable impedance
US-2020203066-A1 · Jun 25, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F27/004?
- CPC H01F27/004 is the Cooperative Patent Classification code for “Arrangements for interchanging inductances, transformers or coils thereof.”
- How many patents are filed under CPC H01F27/004 (Arrangements for interchanging inductances, transformers or coils thereof)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC H01F27/004 growing?
- Publication counts under this code: 3 in 2023 vs 1 in 2024 (latest complete years).