- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 31/20 - Air-break switches for high tension without arc-extinguishing or arc-preventing means with bridging contact that is not electrically connected to either line contact in open position of switch with angularly-movable bridging contact or contact-carrying member actuated through the movement of one or more insulators at least one insulator being rotatable about its own geometrical axis
Patent holdings for IPC class H01H 31/20
Total number of patents in this class: 11
10-year publication summary
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0
|
1
|
1
|
2
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2
|
1
|
1
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0
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0
|
1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2418 |
3 |
| Siemens AG | 24329 |
2 |
| Hubbell Incorporated | 3376 |
2 |
| ABB Schweiz AG | 7353 |
1 |
| Takaoka Toko Co., Ltd. | 23 |
1 |
| Cleaveland/price Inc. | 44 |
1 |
| Trayer Engineering Corporation | 7 |
1 |
| Other owners | 0 |