Ferrite cores and stylus pen including the same
US-2025385030-A1 · Dec 18, 2025 · US
Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
Other ferrites containing manganese or zinc, e.g. Mn-Zn 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 | C04B35/2658 |
| Official title | {Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites} |
| Display label | Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 7 |
| 2021 | 7 |
| 2022 | 10 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for manufacturing sintered body, structure, and composite structure
US-12479770-B2 · Nov 25, 2025 · US
Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer
US-12386281-B2 · Aug 12, 2025 · US
MnZn-BASED FERRITE
US-2025230101-A1 · Jul 17, 2025 · US
Balls comprising a ferrite material and use of balls comprising a ferrite material
US-2025218632-A1 · Jul 3, 2025 · US
Ferrite particles, electrophotographic developer carrier core material, electrophotographic developer carrier, and electrophotographic developer
US-12253825-B2 · Mar 18, 2025 · US
Ferrite sintered magnet, ferrite particles, bonded magnet, and rotating electrical machine
US-12243668-B2 · Mar 4, 2025 · US
Methods of forming articles having spinel-based oxides containing magnesium, aluminum and titanium
US-12234192-B2 · Feb 25, 2025 · US
Magnetic sheet, coil module having magnetic sheet, and non-contact power supply device
US-12040112-B2 · Jul 16, 2024 · US
Methods of forming articles having spinel-based oxides containing magnesium, aluminum and titanium
US-2024124361-A1 · Apr 18, 2024 · US
Low loss power ferrites and method of manufacture
US-11945753-B2 · Apr 2, 2024 · US
Spinel-based oxides containing magnesium, aluminum and titanium and methods of forming articles having same
US-11891340-B2 · Feb 6, 2024 · US
Ceramic particles for use in a solar power tower
US-2024011670-A1 · Jan 11, 2024 · US
MnZn-BASED FERRITE AND METHOD FOR PRODUCING SAME
US-2024006103-A1 · Jan 4, 2024 · US
MnZn-BASED FERRITE
US-2023373864-A1 · Nov 23, 2023 · US
Ferrite particle, carrier core material for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer
US-2023296999-A1 · Sep 21, 2023 · US
SINTERED MnZn FERRITE AND ITS PRODUCTION METHOD
US-2023290554-A1 · Sep 14, 2023 · US
Ferrite sintered magnet, ferrite particles, bonded magnet, and rotating electrical machine
US-11699540-B2 · Jul 11, 2023 · US
Method for manufacturing sintered body, structure, and composite structure
US-11607728-B2 · Mar 21, 2023 · US
Hydroflux-assisted densification
US-2022363604-A1 · Nov 17, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B35/2658?
- CPC C04B35/2658 is the Cooperative Patent Classification code for “Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites.”
- How many patents are filed under CPC C04B35/2658 (Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC C04B35/2658 growing?
- Publication counts under this code: 6 in 2024 vs 10 in 2025 (latest complete years).