- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 1/20 - 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
Patent holdings for IPC class H01F 1/20
Total number of patents in this class: 308
10-year publication summary
17
|
30
|
19
|
18
|
23
|
28
|
21
|
29
|
34
|
10
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
TDK Corporation | 6306 |
31 |
Murata Manufacturing Co., Ltd. | 22355 |
22 |
Sumitomo Electric Industries, Ltd. | 14131 |
21 |
Sumitomo Wiring Systems, Ltd. | 9367 |
10 |
JFE Steel Corporation | 6067 |
10 |
AutoNetworks Technologies, Ltd. | 5809 |
9 |
Dowa Electronics Materials Co., Ltd. | 610 |
9 |
Seiko Epson Corporation | 18724 |
8 |
Hitachi Metals, Ltd. | 2175 |
8 |
SANYO Special Steel Co., Ltd. | 201 |
8 |
Toda Kogyo Corporation | 323 |
7 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
6 |
National Institute of Advanced Industrial Science and Technology | 3677 |
5 |
Taiyo Yuden Co., Ltd. | 1809 |
5 |
Samsung Electro-mechanics Co., Ltd. | 4798 |
4 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
4 |
General Electric Company | 18133 |
3 |
3m Innovative Properties Company | 18406 |
3 |
Intel Corporation | 45621 |
3 |
Nichia Corporation | 3394 |
3 |
Other owners | 129 |