- 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: 736
10-year publication summary
|
45
|
63
|
82
|
79
|
65
|
68
|
64
|
74
|
65
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24369 |
40 |
| TDK Corporation | 6676 |
24 |
| Delta Electronics, Inc. | 2589 |
19 |
| Hitachi Energy Ltd. | 2184 |
18 |
| Samsung Electro-mechanics Co., Ltd. | 5529 |
15 |
| Siemens Energy Global GmbH & Co. KG | 2923 |
14 |
| ABB Schweiz AG | 6896 |
13 |
| Samsung Electronics Co., Ltd. | 144426 |
12 |
| Realtek Semiconductor Corp. | 3274 |
12 |
| Auckland UniServices Limited | 496 |
11 |
| Nucurrent, Inc. | 346 |
10 |
| Siemens AG | 24547 |
9 |
| Delta Electronics (Shanghai) Co., Ltd. | 699 |
9 |
| Huawei Technologies Co., Ltd. | 111237 |
8 |
| Taiyo Yuden Co., Ltd. | 1927 |
8 |
| Texas Instruments Incorporated | 19482 |
7 |
| Maxim Integrated Products, Inc. | 1037 |
6 |
| ShenZhen Sunlord Electronics Co., Ltd. | 77 |
6 |
| Sumida Corporation | 320 |
6 |
| Moda-innochips Co., Ltd. | 99 |
6 |
| Other owners | 483 |