- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 27/28 - CoilsWindingsConductive connections
Patent holdings for IPC class H01F 27/28
Total number of patents in this class: 8880
10-year publication summary
|
665
|
787
|
931
|
1052
|
926
|
855
|
824
|
674
|
696
|
380
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24465 |
1076 |
| TDK Corporation | 6701 |
466 |
| Samsung Electro-mechanics Co., Ltd. | 5597 |
441 |
| Taiyo Yuden Co., Ltd. | 1930 |
171 |
| Sumitomo Electric Industries, Ltd. | 15428 |
126 |
| Intel Corporation | 46949 |
109 |
| Sumitomo Wiring Systems, Ltd. | 10307 |
108 |
| Delta Electronics, Inc. | 2601 |
107 |
| AutoNetworks Technologies, Ltd. | 6548 |
106 |
| Realtek Semiconductor Corp. | 3278 |
101 |
| Mitsubishi Electric Corporation | 45962 |
100 |
| Delta Electronics (Shanghai) Co., Ltd. | 710 |
100 |
| LG Innotek Co., Ltd. | 7610 |
95 |
| Qualcomm Incorporated | 84971 |
79 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42461 |
79 |
| Cyntec Co., Ltd. | 255 |
77 |
| Apple Inc. | 54658 |
75 |
| Samsung Electronics Co., Ltd. | 145416 |
74 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
73 |
| Hitachi Energy Ltd. | 2194 |
72 |
| Other owners | 5245 |