Refractory lining design for magnetic separation
US-2024416360-A1 · Dec 19, 2024 · US
Ferrites
Ferrites · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C04B2235/3274 |
| Official title | Ferrites |
| Display label | Ferrites |
| Total patents | 254 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 22 |
| 2017 | 28 |
| 2018 | 26 |
| 2019 | 27 |
| 2020 | 34 |
| 2021 | 21 |
| 2022 | 27 |
| 2023 | 22 |
| 2024 | 20 |
| 2025 | 14 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Glass-ceramic-ferrite composition and electronic component
US-2017345543-A1 · Nov 30, 2017 · US
Zirconia composition, zirconia pre-sintered body and zirconia sintered body, and dental product
US-2017334786-A1 · Nov 23, 2017 · US
Ceramic and preparation method therefor
US-2017327425-A1 · Nov 16, 2017 · US
Piezoelectric composition and method for producing same, piezoelectric element/non-lead piezoelectric element and method for producing same, ultrasonic probe and diagnostic imaging device
US-9812633-B2 · Nov 7, 2017 · US
Ferrite powder for bonded magnets, method for producing the same and ferrite bonded magnet
US-2017316857-A1 · Nov 2, 2017 · US
Components with environmental barrier coatings having improved surface roughness
US-9771826-B2 · Sep 26, 2017 · US
Ultra-high dielectric constant garnet
US-9771304-B2 · Sep 26, 2017 · US
Zirconia composition, zirconia pre-sintered body and zirconia sintered body, and dental product
US-2017247295-A1 · Aug 31, 2017 · US
Polycrystalline diamond compact (PDC) cutting element having multiple catalytic elements
US-9719307-B1 · Aug 1, 2017 · US
Ferrite sintered magnet
US-2017207012-A1 · Jul 20, 2017 · US
Ferrite sintered magnet
US-2017207011-A1 · Jul 20, 2017 · US
Ceramic Multi-Layered Capacitor
US-2017178815-A1 · Jun 22, 2017 · US
Piezoelectric material, piezoelectric element, and electronic apparatus
US-9680086-B2 · Jun 13, 2017 · US
Material for a Thermoelectric Element and Method for Producing a Material for a Thermoelectric Element
US-2017158563-A1 · Jun 8, 2017 · US
Electromagnetic effect material and ceramic electronic component
US-2017152185-A1 · Jun 1, 2017 · US
Fire-resistant ceramic mix and fire resistant ceramic product
US-9656919-B2 · May 23, 2017 · US
Polycrystalline diamond compact including a pre-sintered polycrystalline diamond table including a nonmetallic catalyst that limits infiltration of a metallic-catalyst infiltrant therein and applications therefor
US-9657529-B1 · May 23, 2017 · US
Electrode Material and Use Thereof for the Manufacture of an Inert Anode
US-2017130351-A1 · May 11, 2017 · US
Ferrite sintered plate and ferrite sintered sheet
US-2017117075-A1 · Apr 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B2235/3274?
- CPC C04B2235/3274 is the Cooperative Patent Classification code for “Ferrites.”
- How many patents are filed under CPC C04B2235/3274 (Ferrites)?
- Our database includes 254 publications tagged with this CPC code.
- Is patent activity under CPC C04B2235/3274 growing?
- Publication counts under this code: 20 in 2024 vs 14 in 2025 (latest complete years).