- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 3/14 - Constrictions; Gaps, e.g. air-gaps
Patent holdings for IPC class H01F 3/14
Total number of patents in this class: 484
10-year publication summary
|
42
|
27
|
35
|
67
|
62
|
39
|
47
|
45
|
29
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FANUC Corporation | 5803 |
33 |
| Sumitomo Electric Industries, Ltd. | 14131 |
14 |
| TDK Corporation | 6306 |
14 |
| Sumitomo Wiring Systems, Ltd. | 9367 |
14 |
| AutoNetworks Technologies, Ltd. | 5809 |
14 |
| Delta Electronics (Shanghai) Co., Ltd. | 611 |
13 |
| Murata Manufacturing Co., Ltd. | 22355 |
11 |
| Delta Electronics, Inc. | 2401 |
10 |
| ABB Schweiz AG | 6321 |
9 |
| Eaton Intelligent Power Limited | 6113 |
9 |
| TDK Electronics AG | 863 |
9 |
| LG Innotek Co., Ltd. | 6758 |
8 |
| Robert Bosch GmbH | 40953 |
7 |
| Ford Global Technologies, LLC | 19702 |
7 |
| Tamura Corporation | 350 |
7 |
| Huawei Technologies Co., Ltd. | 100781 |
5 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
5 |
| Analog Devices, Inc. | 3475 |
5 |
| Power Integrations, Inc. | 527 |
5 |
| SUMIDA Components & Modules GmbH | 39 |
5 |
| Other owners | 280 |