- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/68 - Liquid-break switches, e.g. oil-break
Patent holdings for IPC class H01H 33/68
Total number of patents in this class: 10
10-year publication summary
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0
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1
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0
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3
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0
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1
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0
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 23972 |
2 |
| Quality Switch, Inc. | 4 |
2 |
| Mitsubishi Electric Corporation | 48287 |
1 |
| General Atomics | 166 |
1 |
| Itron, Inc. | 981 |
1 |
| Xi'an Jiaotong University | 742 |
1 |
| Hitachi Energy Holdings Ltd | 11 |
1 |
| Hitachi Energy Ltd. | 2627 |
1 |
| Other owners | 0 |