Hexagonal ferrite magnetic particles, magnetic recording powder, and magnetic recording medium
US-9818517-B2 · Nov 14, 2017 · US
in the form of particles {(for magnetic record carriers G11B5/70626)}
in the form of particles {(for magnetic record carriers G11B5/70626)} · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01F1/11 |
| Official title | in the form of particles {(for magnetic record carriers G11B5/70626)} |
| Display label | in the form of particles {(for magnetic record carriers G11B5/70626)} |
| Total patents | 286 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 33 |
| 2016 | 21 |
| 2017 | 31 |
| 2018 | 23 |
| 2019 | 28 |
| 2020 | 30 |
| 2021 | 24 |
| 2022 | 41 |
| 2023 | 34 |
| 2024 | 11 |
| 2025 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Production method for metal oxide particles, metal oxide powder, and magnetic recording medium
US-2017287603-A1 · Oct 5, 2017 · US
Hexagonal ferrite powder, magnetic recording medium, and method of hexagonal ferrite powder
US-2017287515-A1 · Oct 5, 2017 · US
Magnetic iron oxide nanopowder and process for producing the same
US-2017137302-A1 · May 18, 2017 · US
Calcined ferrite, sintered ferrite magnet and its production method
US-9601248-B2 · Mar 21, 2017 · US
Sintered ferrite magnet and motor provided therewith
US-9589713-B2 · Mar 7, 2017 · US
Method for manufacturing Sr ferrite particle for sintered magnet, method for using Sr ferrite particle, Sr ferrite sintered magnet and method for manufacturing same, and motor and generator
US-9530548-B2 · Dec 27, 2016 · US
Sintered ferrite magnet and motor provided therewith
US-9514871-B2 · Dec 6, 2016 · US
Method of manufacturing hexagonal ferrite magnetic particles, method of manufacturing magnetic coating material, and method of manufacturing magnetic recording medium
US-9514776-B2 · Dec 6, 2016 · US
Hexagonal strontium ferrite magnetic powder and method of manufacturing the same, and magnetic recording medium and method of manufacturing the same
US-9478331-B2 · Oct 25, 2016 · US
Sintered ferrite magnet and motor provided therewith
US-9460835-B2 · Oct 4, 2016 · US
Method of Making a Flexible Magnetized Sheet
US-2016279855-A1 · Sep 29, 2016 · US
Magnetic powder for magnetic recording, magnetic recording medium, and method of manufacturing magnetic powder for magnetic recording
US-9454983-B2 · Sep 27, 2016 · US
Magnetic tape
US-2016276076-A1 · Sep 22, 2016 · US
Soft magnetic exchange-coupled composite structure, and high-frequency device component, antenna module, and magnetoresistive device including the soft magnetic exchange-coupled composite structure
US-9437358-B2 · Sep 6, 2016 · US
Magnetic powder for magnetic recording medium
US-2016217817-A1 · Jul 28, 2016 · US
Sintered ferrite magnet and its production method
US-9401235-B2 · Jul 26, 2016 · US
Production method for metal oxide particles, metal oxide powder, and magnetic recording medium
US-2016203894-A1 · Jul 14, 2016 · US
Ferromagnetic particles and process for producing the same, anisotropic magnet and bonded magnet
US-2016189836-A1 · Jun 30, 2016 · US
Hexagonal ferrite magnetic powder for magnetic recording, method for producing hexagonal ferrite magnetic particles, and magnetic recording medium
US-2016141084-A1 · May 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01F1/11?
- CPC H01F1/11 is the Cooperative Patent Classification code for “in the form of particles {(for magnetic record carriers G11B5/70626)}.”
- How many patents are filed under CPC H01F1/11 (in the form of particles {(for magnetic record carriers G11B5/70626)})?
- Our database includes 286 publications tagged with this CPC code.
- Is patent activity under CPC H01F1/11 growing?
- Publication counts under this code: 11 in 2024 vs 10 in 2025 (latest complete years).