- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 27/255 - Magnetic cores made from particles
Patent holdings for IPC class H01F 27/255
Total number of patents in this class: 1598
10-year publication summary
|
110
|
140
|
150
|
144
|
152
|
163
|
128
|
99
|
99
|
44
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24575 |
194 |
| Sumitomo Electric Industries, Ltd. | 15511 |
145 |
| Samsung Electro-mechanics Co., Ltd. | 5620 |
139 |
| Sumitomo Wiring Systems, Ltd. | 10376 |
107 |
| AutoNetworks Technologies, Ltd. | 6602 |
107 |
| TDK Corporation | 6750 |
101 |
| Taiyo Yuden Co., Ltd. | 1939 |
77 |
| Hitachi Metals, Ltd. | 1977 |
37 |
| Panasonic Intellectual Property Management Co., Ltd. | 31515 |
33 |
| Cyntec Co., Ltd. | 257 |
23 |
| TOKIN Corporation | 205 |
23 |
| NTN Corporation | 4975 |
21 |
| Sumitomo Electric Sintered Alloy, Ltd. | 227 |
21 |
| JFE Steel Corporation | 6853 |
18 |
| Seiko Epson Corporation | 19371 |
17 |
| CTM Magnetics, Inc. | 27 |
17 |
| Sumida Corporation | 326 |
13 |
| Kyocera Corporation | 13846 |
12 |
| Alps Alpine Co., Ltd. | 2082 |
12 |
| Nitto Denko Corporation | 8246 |
11 |
| Other owners | 470 |