- 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: 9047
10-year publication summary
|
657
|
780
|
918
|
1041
|
918
|
848
|
821
|
674
|
694
|
543
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 24843 |
1096 |
| TDK Corporation | 6878 |
485 |
| Samsung Electro-mechanics Co., Ltd. | 5668 |
441 |
| Taiyo Yuden Co., Ltd. | 1976 |
172 |
| Sumitomo Electric Industries, Ltd. | 15668 |
126 |
| Delta Electronics, Inc. | 2653 |
111 |
| Intel Corporation | 46921 |
108 |
| Sumitomo Wiring Systems, Ltd. | 10493 |
108 |
| AutoNetworks Technologies, Ltd. | 6687 |
106 |
| Delta Electronics (Shanghai) Co., Ltd. | 728 |
104 |
| Realtek Semiconductor Corp. | 3326 |
103 |
| Mitsubishi Electric Corporation | 46618 |
100 |
| LG Innotek Co., Ltd. | 7846 |
100 |
| Qualcomm Incorporated | 86990 |
81 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 44095 |
81 |
| Cyntec Co., Ltd. | 259 |
80 |
| Panasonic Intellectual Property Management Co., Ltd. | 32095 |
79 |
| Samsung Electronics Co., Ltd. | 148077 |
77 |
| Apple Inc. | 55735 |
77 |
| Texas Instruments Incorporated | 19450 |
73 |
| Other owners | 5339 |