- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/22 - Selection of fluids for arc-extinguishing
Patent holdings for IPC class H01H 33/22
Total number of patents in this class: 112
10-year publication summary
|
8
|
13
|
10
|
15
|
8
|
4
|
6
|
4
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2610 |
16 |
| ABB Schweiz AG | 7665 |
12 |
| General Electric Technology GmbH | 1336 |
12 |
| Alstom Technology Ltd | 1036 |
9 |
| ABB Technology AG | 1221 |
9 |
| Siemens AG | 23996 |
8 |
| Arkema France | 4251 |
6 |
| Schneider Electric Industries SAS | 1595 |
6 |
| Eaton Intelligent Power Limited | 6268 |
4 |
| Ormazabal Corporate Technology, A.I.E. | 9 |
4 |
| Mitsubishi Electric Corporation | 48172 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6169 |
3 |
| Siemens Energy Global GmbH & Co. KG | 3432 |
3 |
| Agc, Inc. | 5577 |
2 |
| Hitachi Energy Switzerland AG | 299 |
2 |
| Dehon S.A. | 14 |
1 |
| Electric Power Research Institute of Guangdong Power Grid Co., Ltd. | 126 |
1 |
| Korea Electrotechnology Research Institute | 514 |
1 |
| Korea Research Institute of Chemical Technology | 1479 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4122 |
1 |
| Other owners | 8 |