- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
Patent holdings for IPC class H01F 1/24
Total number of patents in this class: 468
10-year publication summary
|
33
|
29
|
27
|
30
|
34
|
35
|
32
|
22
|
25
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6306 |
43 |
| Sumitomo Electric Industries, Ltd. | 14131 |
37 |
| Hitachi Metals, Ltd. | 2175 |
27 |
| Taiyo Yuden Co., Ltd. | 1809 |
27 |
| Murata Manufacturing Co., Ltd. | 22355 |
21 |
| Höganäs AB | 337 |
21 |
| Sumitomo Electric Sintered Alloy, Ltd. | 214 |
19 |
| NTN Corporation | 5008 |
15 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
13 |
| JFE Steel Corporation | 6067 |
12 |
| Toshiba Corporation | 12017 |
11 |
| Seiko Epson Corporation | 18724 |
9 |
| CTM Magnetics, Inc. | 45 |
8 |
| Dowa Electronics Materials Co., Ltd. | 610 |
8 |
| Persimmon Technologies, Corp. | 140 |
8 |
| TOKIN Corporation | 199 |
8 |
| Toda Kogyo Corporation | 323 |
7 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
7 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
6 |
| Hitachi Powdered Metals Co., Ltd. | 16 |
6 |
| Other owners | 155 |