- 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: 751
10-year publication summary
|
40
|
59
|
81
|
79
|
63
|
67
|
64
|
72
|
65
|
35
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24907 |
40 |
| TDK Corporation | 6879 |
28 |
| Delta Electronics, Inc. | 2661 |
19 |
| Hitachi Energy Ltd. | 2311 |
19 |
| Samsung Electro-mechanics Co., Ltd. | 5674 |
15 |
| Siemens Energy Global GmbH & Co. KG | 3048 |
14 |
| ABB Schweiz AG | 7127 |
13 |
| Samsung Electronics Co., Ltd. | 148584 |
12 |
| Realtek Semiconductor Corp. | 3335 |
12 |
| Auckland UniServices Limited | 493 |
12 |
| Delta Electronics (Shanghai) Co., Ltd. | 729 |
10 |
| Nucurrent, Inc. | 368 |
10 |
| Siemens AG | 24363 |
9 |
| Huawei Technologies Co., Ltd. | 114984 |
8 |
| Taiyo Yuden Co., Ltd. | 1977 |
8 |
| Texas Instruments Incorporated | 19481 |
7 |
| Maxim Integrated Products, Inc. | 1034 |
6 |
| ShenZhen Sunlord Electronics Co., Ltd. | 77 |
6 |
| Sumida Corporation | 332 |
6 |
| Analog Devices International Unlimited Company | 1964 |
6 |
| Other owners | 491 |