- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection 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: 391
10-year publication summary
|
52
|
36
|
43
|
27
|
37
|
42
|
21
|
42
|
28
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Corporation | 12017 |
42 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
24 |
| TDK Corporation | 6306 |
21 |
| Nichia Corporation | 3394 |
16 |
| Toyota Motor Corporation | 28582 |
11 |
| Hitachi Metals, Ltd. | 2175 |
9 |
| Proterial, Ltd. | 638 |
9 |
| Daido Steel Co., Ltd. | 237 |
8 |
| TOKIN Corporation | 199 |
8 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
7 |
| Regents of the University of Minnesota | 2620 |
7 |
| Sumitomo Electric Industries, Ltd. | 14131 |
6 |
| Hitachi, Ltd. | 16452 |
6 |
| Iowa State University Research Foundation, Inc. | 685 |
6 |
| Fujian Changting Golden Dragon Rare-earth Co., Ltd. | 81 |
6 |
| Ford Global Technologies, LLC | 19702 |
5 |
| Lawrence Livermore National Security, LLC | 1834 |
5 |
| Grirem Advanced Materials Co., Ltd. | 114 |
5 |
| HRL Laboratories, LLC | 1588 |
5 |
| Vacuumschmelze GmbH & Co. KG | 253 |
5 |
| Other owners | 180 |