- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/38 - Power arrangements internal to the switch for operating the driving mechanism using electromagnet
Patent holdings for IPC class H01H 33/38
Total number of patents in this class: 146
10-year publication summary
|
7
|
6
|
15
|
7
|
10
|
7
|
2
|
6
|
7
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 47352 |
38 |
| Siemens AG | 24278 |
11 |
| Hitachi, Ltd. | 15800 |
11 |
| ABB Schweiz AG | 7313 |
11 |
| Eaton Intelligent Power Limited | 6109 |
8 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1504 |
7 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6221 |
7 |
| S&C Electric Company | 182 |
4 |
| Hawker Siddeley Switchgear Limited | 9 |
3 |
| Toshiba Corporation | 12537 |
2 |
| Hilti Aktiengesellschaft | 3557 |
2 |
| ABB Technology AG | 1236 |
2 |
| Fuji Electric Systems Co., Ltd. | 86 |
2 |
| Hydro-Quebec | 638 |
2 |
| Lsis Co., Ltd. | 815 |
2 |
| Meidensha Corporation | 907 |
2 |
| Schneider Electric Industries SAS | 1542 |
2 |
| Scibreak AB | 14 |
2 |
| Joyson Safety Systems Acquisition LLC | 360 |
2 |
| Hyosung Heavy Industries Corporation | 264 |
2 |
| Other owners | 24 |