- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 27/28 - Coils; Windings; Conductive connections
Patent holdings for IPC class H01F 27/28
Total number of patents in this class: 8045
10-year publication summary
|
569
|
665
|
787
|
932
|
1052
|
925
|
839
|
790
|
660
|
229
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 22355 |
971 |
| Samsung Electro-mechanics Co., Ltd. | 4798 |
408 |
| TDK Corporation | 6306 |
406 |
| Taiyo Yuden Co., Ltd. | 1809 |
161 |
| Sumitomo Electric Industries, Ltd. | 14131 |
117 |
| Intel Corporation | 45621 |
108 |
| Mitsubishi Electric Corporation | 43934 |
100 |
| Sumitomo Wiring Systems, Ltd. | 9367 |
99 |
| AutoNetworks Technologies, Ltd. | 5809 |
97 |
| Delta Electronics, Inc. | 2401 |
94 |
| Realtek Semiconductor Corp. | 3028 |
94 |
| Delta Electronics (Shanghai) Co., Ltd. | 611 |
89 |
| LG Innotek Co., Ltd. | 6758 |
85 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
72 |
| Hitachi Energy Ltd. | 1921 |
72 |
| Cyntec Co., Ltd. | 232 |
71 |
| Apple Inc. | 50209 |
68 |
| Samsung Electronics Co., Ltd. | 131630 |
67 |
| Qualcomm Incorporated | 76576 |
67 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
63 |
| Other owners | 4736 |