- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/88 - Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
Patent holdings for IPC class H01H 33/88
Total number of patents in this class: 77
10-year publication summary
|
7
|
5
|
5
|
4
|
1
|
1
|
1
|
0
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2579 |
14 |
| Siemens AG | 24029 |
11 |
| Toshiba Corporation | 12560 |
7 |
| Mitsubishi Electric Corporation | 48018 |
5 |
| Alstom Technology Ltd | 1045 |
5 |
| ABB Schweiz AG | 7607 |
4 |
| Siemens Energy Global GmbH & Co. KG | 3345 |
4 |
| ABB Technology AG | 1224 |
3 |
| General Electric Technology GmbH | 1337 |
3 |
| Hitachi, Ltd. | 16094 |
2 |
| Bharat Heavy Electricals Ltd. | 3 |
2 |
| Ormazabal y CIA, S.L.U. | 20 |
2 |
| Hyundai Electric & Energy Systems Co., Ltd | 51 |
2 |
| Eaton Intelligent Power Limited | 6243 |
2 |
| Toshiba Energy Systems & Solutions Corp. | 1152 |
2 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6178 |
2 |
| Eaton Corporation | 1804 |
1 |
| Alstom Grid GmbH | 4 |
1 |
| Auto-Kabel Management GmbH | 173 |
1 |
| LS Industrial Systems Co., Ltd. | 94 |
1 |
| Other owners | 3 |