- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/52 - Interlocking mechanisms for interlocking two or more switches
Patent holdings for IPC class H01H 33/52
Total number of patents in this class: 44
10-year publication summary
|
4
|
4
|
3
|
4
|
0
|
2
|
1
|
1
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24199 |
4 |
| Hawker Siddeley Switchgear Limited | 9 |
4 |
| ABB Schweiz AG | 7460 |
3 |
| Eaton Intelligent Power Limited | 6162 |
3 |
| Hitachi Energy Ltd. | 2502 |
3 |
| Mitsubishi Electric Corporation | 47625 |
2 |
| State Grid Corporation of China | 1386 |
2 |
| Pinggao Group Co., Ltd. | 100 |
2 |
| Hewlett-Packard Development Company, L.P. | 25342 |
1 |
| Infineon Technologies AG | 8383 |
1 |
| Amazon Technologies, Inc. | 27726 |
1 |
| Omron Corporation | 7334 |
1 |
| ABB AB | 139 |
1 |
| Chyng Hong Electronic Co., Ltd. | 54 |
1 |
| DiWIN technology CO. LTD | 3 |
1 |
| Echelon Corporation | 58 |
1 |
| G & W Electric Company | 157 |
1 |
| Hunter Industries, Inc. | 291 |
1 |
| Hydro-Quebec | 635 |
1 |
| innogy SE | 196 |
1 |
| Other owners | 9 |