- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/11 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
Patent holdings for IPC class H01F 1/11
Total number of patents in this class: 340
10-year publication summary
|
23
|
24
|
33
|
28
|
24
|
19
|
10
|
12
|
5
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6813 |
51 |
| FUJIFILM Corporation | 30277 |
48 |
| Dowa Electronics Materials Co., Ltd. | 636 |
48 |
| Hitachi Metals, Ltd. | 1921 |
19 |
| The University of Tokyo | 4328 |
16 |
| Toda Kogyo Corporation | 341 |
14 |
| Sony Corporation | 30388 |
12 |
| Powdertech Co., Ltd. | 138 |
9 |
| Dowa F-tec Co., Ltd. | 14 |
8 |
| Nittetsu Mining Co., Ltd. | 31 |
5 |
| Aarhus Universitet | 443 |
4 |
| Canon Kabushiki Kaisha | 7228 |
4 |
| Sony Group Corporation | 15204 |
4 |
| Allumax TTI, LLC | 49 |
4 |
| LG Innotek Co., Ltd. | 8200 |
3 |
| Industry-university Cooperation Foundation Hanyang University Erica Campus | 624 |
3 |
| Trans-tech, Inc. | 30 |
3 |
| Proterial, Ltd. | 924 |
3 |
| Siemens AG | 24199 |
2 |
| Murata Manufacturing Co., Ltd. | 25552 |
2 |
| Other owners | 78 |