- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/055 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
Patent holdings for IPC class H01F 1/055
Total number of patents in this class: 439
10-year publication summary
|
43
|
27
|
37
|
42
|
20
|
43
|
29
|
33
|
18
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Corporation | 12548 |
42 |
| TDK Corporation | 6855 |
25 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6181 |
24 |
| Nichia Corporation | 3872 |
21 |
| Toyota Motor Corporation | 35680 |
12 |
| Iowa State University Research Foundation, Inc. | 825 |
12 |
| Hitachi, Ltd. | 16071 |
9 |
| TOKIN Corporation | 215 |
9 |
| Hitachi Metals, Ltd. | 1900 |
8 |
| Daido Steel Co., Ltd. | 284 |
8 |
| Vacuumschmelze GmbH & Co. KG | 256 |
8 |
| Proterial, Ltd. | 933 |
8 |
| Ford Global Technologies, LLC | 21478 |
7 |
| Shin-Etsu Chemical Co., Ltd. | 6083 |
7 |
| Regents of the University of Minnesota | 2785 |
7 |
| Sumitomo Electric Industries, Ltd. | 16305 |
6 |
| Grirem Advanced Materials Co., Ltd. | 140 |
6 |
| Fujian Changting Golden Dragon Rare-earth Co., Ltd. | 78 |
6 |
| Lawrence Livermore National Security, LLC | 1972 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3790 |
5 |
| Other owners | 204 |