- All sections
- H - Electricity
- H02H - Emergency protective circuit arrangements
- H02H 7/045 - Differential protection of transformers
Patent holdings for IPC class H02H 7/045
Total number of patents in this class: 92
10-year publication summary
|
5
|
9
|
5
|
9
|
5
|
6
|
7
|
2
|
7
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24386 |
10 |
| Mitsubishi Electric Corporation | 46449 |
9 |
| ABB Schweiz AG | 7055 |
7 |
| NR Electric Co., Ltd. | 328 |
5 |
| NR Engineering Co., Ltd | 290 |
5 |
| Schweitzer Engineering Laboratories, Inc. | 913 |
5 |
| Hitachi Energy Ltd. | 2284 |
5 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6272 |
4 |
| Hubbell Incorporated | 3305 |
3 |
| Toshiba Corporation | 12502 |
2 |
| Delta Electronics, Inc. | 2648 |
2 |
| Kodensya Co., Ltd. | 3 |
2 |
| S & C Electric Co. | 292 |
2 |
| GE Infrastructure Technology, LLC | 6248 |
2 |
| Webasto Charging Systems, Inc. | 72 |
2 |
| TechHold, LLC | 48 |
2 |
| ABB Technology Ltd | 477 |
2 |
| ABB Technology AG | 1251 |
1 |
| Bombardier Transportation GmbH | 644 |
1 |
| General Electric Technology GmbH | 1373 |
1 |
| Other owners | 20 |