- 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: 8454
10-year publication summary
|
665
|
787
|
932
|
1052
|
926
|
849
|
800
|
665
|
690
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 23609 |
1029 |
| TDK Corporation | 6517 |
444 |
| Samsung Electro-mechanics Co., Ltd. | 5178 |
421 |
| Taiyo Yuden Co., Ltd. | 1887 |
166 |
| Sumitomo Electric Industries, Ltd. | 14914 |
122 |
| Intel Corporation | 46091 |
108 |
| Delta Electronics, Inc. | 2502 |
105 |
| Sumitomo Wiring Systems, Ltd. | 9980 |
104 |
| AutoNetworks Technologies, Ltd. | 6298 |
102 |
| Mitsubishi Electric Corporation | 44678 |
99 |
| Realtek Semiconductor Corp. | 3196 |
97 |
| Delta Electronics (Shanghai) Co., Ltd. | 655 |
93 |
| LG Innotek Co., Ltd. | 7203 |
90 |
| Hitachi Energy Ltd. | 2223 |
79 |
| Qualcomm Incorporated | 81327 |
76 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 40493 |
74 |
| Cyntec Co., Ltd. | 240 |
74 |
| Samsung Electronics Co., Ltd. | 138320 |
72 |
| Apple Inc. | 52547 |
72 |
| Panasonic Intellectual Property Management Co., Ltd. | 29567 |
69 |
| Other owners | 4958 |