Insulator-Coated Soft Magnetic Powder, Dust Core, Magnetic Element And Electronic Device
US-2025296145-A1 · Sep 25, 2025 · US
Corrosion protection
Corrosion protection · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F27/23 |
| Official title | Corrosion protection |
| Display label | Corrosion protection |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 5 |
| 2022 | 3 |
| 2023 | 6 |
| 2024 | 10 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electronic component
US-12308174-B2 · May 20, 2025 · US
Mobile electronic device
US-12255387-B2 · Mar 18, 2025 · US
Intravascular blood pump comprising corrosion resistant permanent magnet
US-2024347270-A1 · Oct 17, 2024 · US
Inductor
US-2024321503-A1 · Sep 26, 2024 · US
R-t-b based permanent magnet
US-2024321491-A1 · Sep 26, 2024 · US
Expansion valve coil structure and preparing method thereof, and expansion valve
US-2024309962-A1 · Sep 19, 2024 · US
Electronic device
US-2024250415-A1 · Jul 25, 2024 · US
High-temperature electrical device and method of making the same
US-2024249878-A1 · Jul 25, 2024 · US
Coil component and method for manufacturing coil component
US-11984251-B2 · May 14, 2024 · US
Intravascular blood pump comprising corrosion resistant permanent magnet
US-11967454-B2 · Apr 23, 2024 · US
Coil component
US-11887768-B2 · Jan 30, 2024 · US
Electronic component
US-2024029957-A1 · Jan 25, 2024 · US
Coil component
US-11823830-B2 · Nov 21, 2023 · US
Coil component and manufacturing method therefor
US-2023238170-A1 · Jul 27, 2023 · US
Coil component
US-2023099709-A1 · Mar 30, 2023 · US
Inductor component and mounting structure of inductor component
US-2023060320-A1 · Mar 2, 2023 · US
Transformer for fastening to a mast of an energy distribution network
US-11587714-B2 · Feb 21, 2023 · US
Coil component
US-11551855-B2 · Jan 10, 2023 · US
Reactor, converter, and power conversion device
US-2022415561-A1 · Dec 29, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F27/23?
- CPC H01F27/23 is the Cooperative Patent Classification code for “Corrosion protection.”
- How many patents are filed under CPC H01F27/23 (Corrosion protection)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC H01F27/23 growing?
- Publication counts under this code: 10 in 2024 vs 3 in 2025 (latest complete years).