- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 31/28 - Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
Patent holdings for IPC class H01H 31/28
Total number of patents in this class: 121
10-year publication summary
|
11
|
8
|
14
|
6
|
8
|
5
|
4
|
5
|
7
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hubbell Incorporated | 3462 |
15 |
| Siemens AG | 23913 |
14 |
| Hitachi Energy Ltd. | 2662 |
13 |
| Mitsubishi Electric Corporation | 48409 |
11 |
| ABB Schweiz AG | 7755 |
10 |
| Cleaveland/price Inc. | 43 |
8 |
| General Electric Technology GmbH | 1318 |
5 |
| ABB Technology AG | 1217 |
4 |
| Alstom Technology Ltd | 1032 |
3 |
| Nuventura GmbH | 10 |
3 |
| TE Connectivity Solutions GmbH | 3077 |
2 |
| Eaton Intelligent Power Limited | 6291 |
2 |
| Rockwell Automation Technologies, Inc. | 2800 |
1 |
| Tyco Electronics Canada ULC | 53 |
1 |
| Siemens Industry, Inc. | 1594 |
1 |
| ABB S.p.A. | 439 |
1 |
| Eaton Electric B.V. | 7 |
1 |
| ABB Technology Oy | 10 |
1 |
| Actuant Corporation | 76 |
1 |
| Aichi Electric Works Co., Ltd. | 4 |
1 |
| Other owners | 23 |