- All sections
- H - Electricity
- H02H - Emergency protective circuit arrangements
- H02H 3/38 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to phase angle between voltage and current
Patent holdings for IPC class H02H 3/38
Total number of patents in this class: 213
10-year publication summary
|
13
|
24
|
25
|
20
|
30
|
18
|
11
|
14
|
4
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24990 |
17 |
| General Electric Technology GmbH | 1657 |
8 |
| Eaton Intelligent Power Limited | 6113 |
8 |
| Hubbell Incorporated | 3052 |
6 |
| ABB Technology AG | 1301 |
6 |
| Schweitzer Engineering Laboratories, Inc. | 920 |
6 |
| Mitsubishi Electric Corporation | 43934 |
5 |
| ABB Schweiz AG | 6321 |
5 |
| Trane International Inc. | 1123 |
5 |
| ABB Research Ltd. | 953 |
4 |
| WiTricity Corporation | 514 |
4 |
| Hitachi Energy Ltd. | 1921 |
4 |
| STMicroelectronics S.r.l. | 3693 |
3 |
| Applied Invention, LLC | 59 |
3 |
| Ellenberger & Poensgen GmbH | 229 |
3 |
| Liebherr-components Biberach GmbH | 223 |
3 |
| Littelfuse, Inc. | 758 |
3 |
| National Oilwell Varco, L.P. | 1604 |
3 |
| AES Global Holdings, Pte. Ltd. | 139 |
3 |
| General Electric Company | 18133 |
2 |
| Other owners | 112 |