- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 27/42 - Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils
Patent holdings for IPC class H01F 27/42
Total number of patents in this class: 1221
10-year publication summary
|
163
|
187
|
145
|
109
|
49
|
49
|
36
|
30
|
14
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| WiTricity Corporation | 514 |
61 |
| Samsung Electronics Co., Ltd. | 131630 |
55 |
| Qualcomm Incorporated | 76576 |
40 |
| Energous Corporation | 404 |
33 |
| Toyota Motor Corporation | 28582 |
29 |
| TDK Corporation | 6306 |
26 |
| Philips IP Ventures B.V. | 113 |
25 |
| Sony Corporation | 32931 |
24 |
| Guangdong Oppo Mobile Telecommunications Corp., Ltd. | 18739 |
23 |
| Murata Manufacturing Co., Ltd. | 22355 |
22 |
| Intel Corporation | 45621 |
21 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
20 |
| Canon Inc. | 36841 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
19 |
| Powermat Technologies Ltd. | 158 |
17 |
| Wins Co., Ltd | 183 |
15 |
| LG Electronics Inc. | 69257 |
14 |
| Koninklijke Philips N.V. | 22975 |
14 |
| Siemens AG | 24990 |
13 |
| NERA Innovations Limited | 150 |
13 |
| Other owners | 718 |