- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/55 - Oil reservoirs or tanksLowering means therefor
Patent holdings for IPC class H01H 33/55
Total number of patents in this class: 28
10-year publication summary
|
3
|
1
|
0
|
3
|
1
|
5
|
2
|
2
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Maschinenfabrik Reinhausen GmbH | 541 |
5 |
| Siemens AG | 24011 |
4 |
| ABB Schweiz AG | 7640 |
3 |
| Weg Transformers USA LLC | 3 |
2 |
| Hitachi Energy Ltd. | 2593 |
2 |
| Mitsubishi Electric Corporation | 48097 |
1 |
| ABB Technology AG | 1224 |
1 |
| Comem S.p.A. | 23 |
1 |
| FMC Kongsberg Subsea AS | 170 |
1 |
| HSP Hochspannungsgeräte GmbH | 143 |
1 |
| S&C Electric Company | 186 |
1 |
| Eaton Intelligent Power Limited | 6256 |
1 |
| Société Nouvelle Transfix Toulon, | 1 |
1 |
| Applied Superconductor Ltd | 2 |
1 |
| COMEM S.r.l. | 3 |
1 |
| Hitachi Energy Switzerland AG | 299 |
1 |
| TechnipFMC Norge AS | 126 |
1 |
| Other owners | 0 |