- All sections
- H - Electricity
- H02H - Emergency protective circuit arrangements
- H02H 7/04 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
Patent holdings for IPC class H02H 7/04
Total number of patents in this class: 311
10-year publication summary
|
14
|
30
|
29
|
23
|
16
|
22
|
28
|
15
|
8
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ABB Schweiz AG | 7219 |
17 |
| Hitachi Energy Ltd. | 2341 |
16 |
| TechHold, LLC | 48 |
15 |
| Eaton Intelligent Power Limited | 6066 |
12 |
| S & C Electric Co. | 285 |
11 |
| Mitsubishi Electric Corporation | 47014 |
8 |
| Emprimus, LLC | 16 |
8 |
| S&C Electric Company | 183 |
8 |
| Siemens AG | 24323 |
7 |
| ABB Technology AG | 1245 |
7 |
| General Electric Technology GmbH | 1370 |
7 |
| Schweitzer Engineering Laboratories, Inc. | 912 |
7 |
| Siemens Energy Global GmbH & Co. KG | 3096 |
6 |
| GE Infrastructure Technology, LLC | 6196 |
5 |
| Toshiba Corporation | 12543 |
4 |
| Hubbell Incorporated | 3356 |
4 |
| Phoenix Contact GmbH & Co. KG | 2292 |
4 |
| Qualitrol Company, LLC | 55 |
4 |
| ABB Research Ltd. | 857 |
3 |
| Lsis Co., Ltd. | 815 |
3 |
| Other owners | 155 |