H01H 83/18
Operated by abnormal product of, or abnormal phase angle between, voltage and
Official title: operated by abnormal product of, or abnormal phase angle between, voltage and current, e.g. directional relay
H01H83/18 (Operated by abnormal product of, or abnormal phase angle between, voltage and) appears on 5 US grants and 6 published applications in this corpus.
Search patents in H01H- Granted patents
- 5
- Published applications
- 6
- Assignees
- 7
- Inventors
- 24
- Latest grant
- 3 May 2022
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| Year | Granted patents | Published applications |
|---|---|---|
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
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