- 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: 349
10-year publication summary
|
24
|
23
|
24
|
33
|
28
|
24
|
20
|
10
|
12
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6791 |
51 |
| Dowa Electronics Materials Co., Ltd. | 632 |
49 |
| FUJIFILM Corporation | 29489 |
48 |
| Hitachi Metals, Ltd. | 1976 |
23 |
| The University of Tokyo | 4201 |
18 |
| Toda Kogyo Corporation | 339 |
14 |
| Sony Corporation | 30979 |
12 |
| Powdertech Co., Ltd. | 138 |
9 |
| Dowa F-tec Co., Ltd. | 15 |
8 |
| Aarhus Universitet | 422 |
4 |
| Nittetsu Mining Co., Ltd. | 31 |
4 |
| Canon Kabushiki Kaisha | 7066 |
4 |
| Allumax TTI, LLC | 41 |
4 |
| LG Innotek Co., Ltd. | 7698 |
3 |
| Industry-university Cooperation Foundation Hanyang University Erica Campus | 583 |
3 |
| Luminex Corporation | 290 |
3 |
| Trans-tech, Inc. | 31 |
3 |
| Sony Group Corporation | 14002 |
3 |
| Siemens AG | 24436 |
2 |
| Murata Manufacturing Co., Ltd. | 24650 |
2 |
| Other owners | 82 |