- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 4/20 - Arrangements for improving potential distribution
Patent holdings for IPC class H01T 4/20
Total number of patents in this class: 15
10-year publication summary
|
3
|
2
|
0
|
1
|
0
|
0
|
0
|
0
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Epcos AG | 641 |
4 |
| DEHN + SÖHNE GmbH + Co. KG | 114 |
2 |
| TDK Electronics AG | 1011 |
2 |
| Nissan Motor Co., Ltd. | 12964 |
1 |
| Alstom Technology Ltd | 1045 |
1 |
| ebm-papst Mulfingen GmbH & Co. KG | 498 |
1 |
| Maschinenfabrik Reinhausen GmbH | 582 |
1 |
| OBO Bettermann GmbH & Co. KG | 11 |
1 |
| Otowa Electric Co., Ltd. | 31 |
1 |
| Phoenix Contact GmbH & Co. KG | 2293 |
1 |
| Other owners | 0 |