- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
Patent holdings for IPC class H01F 27/34
Total number of patents in this class: 806
10-year publication summary
|
63
|
82
|
79
|
65
|
68
|
64
|
77
|
69
|
42
|
44
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 25758 |
43 |
| TDK Corporation | 6876 |
32 |
| Hitachi Energy Ltd. | 2586 |
21 |
| Delta Electronics, Inc. | 2830 |
20 |
| Samsung Electro-mechanics Co., Ltd. | 6091 |
16 |
| Siemens Energy Global GmbH & Co. KG | 3357 |
14 |
| Samsung Electronics Co., Ltd. | 157946 |
13 |
| Realtek Semiconductor Corp. | 3505 |
13 |
| ABB Schweiz AG | 7621 |
13 |
| Huawei Technologies Co., Ltd. | 123543 |
11 |
| Auckland UniServices Limited | 498 |
11 |
| Nucurrent, Inc. | 389 |
11 |
| Siemens AG | 24020 |
10 |
| Delta Electronics (Shanghai) Co., Ltd. | 769 |
10 |
| Texas Instruments Incorporated | 19653 |
8 |
| Taiyo Yuden Co., Ltd. | 2032 |
8 |
| ShenZhen Sunlord Electronics Co., Ltd. | 82 |
7 |
| Cyntec Co., Ltd. | 277 |
6 |
| Maxim Integrated Products, Inc. | 1028 |
6 |
| Sumida Corporation | 336 |
6 |
| Other owners | 527 |