- All sections
- H - Electricity
- H01T - Spark gapsovervoltage arresters using spark gapssparking plugscorona devicesgenerating ions to be introduced into non-enclosed gases
- H01T 4/04 - Housings
Patent holdings for IPC class H01T 4/04
Total number of patents in this class: 93
10-year publication summary
|
7
|
6
|
8
|
9
|
9
|
3
|
5
|
5
|
4
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Phoenix Contact GmbH & Co. KG | 2283 |
10 |
| Eaton Intelligent Power Limited | 6154 |
8 |
| DEHN + SÖHNE GmbH + Co. KG | 122 |
7 |
| Raycap, S.A. | 38 |
7 |
| TDK Electronics AG | 1000 |
7 |
| Murata Manufacturing Co., Ltd. | 25506 |
6 |
| Hubbell Incorporated | 3405 |
5 |
| DEHN SE + Co KG | 39 |
5 |
| Siemens Energy Global GmbH & Co. KG | 3244 |
5 |
| Dehn SE | 168 |
5 |
| Siemens AG | 24236 |
3 |
| Citel | 37 |
3 |
| Hitachi Energy Ltd. | 2461 |
3 |
| OBO Bettermann GmbH & Co. KG | 12 |
2 |
| Ripd IP Development Ltd | 23 |
2 |
| The Boeing Company | 20094 |
1 |
| Epcos AG | 661 |
1 |
| Bayerische Motoren Werke Aktiengesellschaft | 15008 |
1 |
| ABB S.p.A. | 438 |
1 |
| Bourns, Inc. | 177 |
1 |
| Other owners | 10 |