Devices and Methods for an Electromagnetic Coil
US-2020388420-A1 · Dec 10, 2020 · US
Toroidal transformers
Toroidal transformers · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F30/16 |
| Official title | Toroidal transformers |
| Display label | Toroidal transformers |
| Total patents | 114 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 9 |
| 2017 | 9 |
| 2018 | 12 |
| 2019 | 13 |
| 2020 | 15 |
| 2021 | 12 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 7 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reducing reluctance in magnetic devices
US-10840004-B2 · Nov 17, 2020 · US
Semiconductor carrier with vertical power fet module
US-2020335495-A1 · Oct 22, 2020 · US
Integrated inductor windings and heat pipes
US-10804023-B2 · Oct 13, 2020 · US
Reactor, motor driver, power conditioner and machine
US-10770218-B2 · Sep 8, 2020 · US
Reactor for vehicle
US-2020211757-A1 · Jul 2, 2020 · US
Fabrication process to produce a toroidal current transformer
US-2020176182-A1 · Jun 4, 2020 · US
Bracket device for bearing inductor, inductor device, and uninterruptible power supply
US-2020176178-A1 · Jun 4, 2020 · US
Shielded power coupling device
US-10607771-B2 · Mar 31, 2020 · US
Reducing reluctance in magnetic devices
US-2020066434-A1 · Feb 27, 2020 · US
Three-phase toroidal transformer
US-2019371511-A1 · Dec 5, 2019 · US
Electrical connector having transformer with winding wires of different diameters
US-10483697-B2 · Nov 19, 2019 · US
Semiconductor carrier with vertical power FET module
US-10483260-B2 · Nov 19, 2019 · US
Charger antenna unit, charger device, and device to be charged
US-2019348863-A1 · Nov 14, 2019 · US
High efficiency magnetic component
US-10431377-B2 · Oct 1, 2019 · US
High Voltage Transformer
US-2019295769-A1 · Sep 26, 2019 · US
High voltage transformer
US-10373755-B2 · Aug 6, 2019 · US
Voltage or impedance-injection method using transformers with multiple secondary windings for dynamic power flow control
US-10283254-B2 · May 7, 2019 · US
High voltage inductive adder
US-10282567-B2 · May 7, 2019 · US
Devices and Methods for an Electromagnetic Coil
US-2019131042-A1 · May 2, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F30/16?
- CPC H01F30/16 is the Cooperative Patent Classification code for “Toroidal transformers.”
- How many patents are filed under CPC H01F30/16 (Toroidal transformers)?
- Our database includes 114 publications tagged with this CPC code.
- Is patent activity under CPC H01F30/16 growing?
- Publication counts under this code: 7 in 2024 vs 9 in 2025 (latest complete years).