- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/74 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber wherein the break is in gas
Patent holdings for IPC class H01H 33/74
Total number of patents in this class: 67
10-year publication summary
|
5
|
7
|
6
|
5
|
3
|
3
|
5
|
1
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2502 |
11 |
| Siemens AG | 24199 |
8 |
| General Electric Technology GmbH | 1346 |
8 |
| Mitsubishi Electric Corporation | 47625 |
3 |
| ABB Technology AG | 1233 |
3 |
| Toshiba Corporation | 12695 |
2 |
| Alstom Technology Ltd | 1057 |
2 |
| ABB Research Ltd. | 815 |
2 |
| Schneider Electric Industries SAS | 1562 |
2 |
| Siemens Energy Global GmbH & Co. KG | 3261 |
2 |
| Hitachi Energy Switzerland AG | 299 |
2 |
| GE Vernova Infrastructure Technology LLC | 421 |
2 |
| Siemens Industry, Inc. | 1581 |
1 |
| ABB S.p.A. | 438 |
1 |
| ABB Schweiz AG | 7460 |
1 |
| China XD Electric Co.,Ltd. | 29 |
1 |
| Hyundai Heavy Industries Co., Ltd. | 273 |
1 |
| Lsis Co., Ltd. | 814 |
1 |
| Rockwell Automation Switzerland GmbH | 44 |
1 |
| Schneider Electric USA, Inc. | 1341 |
1 |
| Other owners | 12 |