- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 38/28 - Current transformers
Patent holdings for IPC class H01F 38/28
Total number of patents in this class: 138
10-year publication summary
|
8
|
10
|
10
|
8
|
11
|
3
|
11
|
9
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 23972 |
8 |
| Mitsubishi Electric Corporation | 48287 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 34403 |
4 |
| Johnson Controls Technology Company | 1374 |
4 |
| The Board of Trustees of the University of Alabama | 440 |
3 |
| Schneider Electric USA, Inc. | 1328 |
3 |
| Seari Electric Technology Co., Ltd. | 101 |
3 |
| Zhejiang Chint Electrics Co., Ltd. | 237 |
3 |
| Eaton Intelligent Power Limited | 6271 |
3 |
| Sumitomo Electric Industries, Ltd. | 16345 |
2 |
| Kyocera Corporation | 14445 |
2 |
| The United States of America as represented by the Secretary of the Navy | 2866 |
2 |
| Sumitomo Wiring Systems, Ltd. | 11157 |
2 |
| Rockwell Automation Technologies, Inc. | 2810 |
2 |
| ABB Schweiz AG | 7703 |
2 |
| ABB Technology AG | 1219 |
2 |
| Aclara Technologies LLC | 305 |
2 |
| Amosense Co., Ltd. | 504 |
2 |
| AutoNetworks Technologies, Ltd. | 7225 |
2 |
| Generac Power Systems, Inc. | 394 |
2 |
| Other owners | 80 |