- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/00 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
Patent holdings for IPC class H01H 33/00
Total number of patents in this class: 136
10-year publication summary
|
7
|
8
|
11
|
14
|
14
|
5
|
4
|
3
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24518 |
19 |
| Mitsubishi Electric Corporation | 45998 |
15 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6267 |
10 |
| Hitachi Energy Ltd. | 2198 |
10 |
| Eaton Intelligent Power Limited | 5981 |
7 |
| ABB Schweiz AG | 6942 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2944 |
5 |
| Alstom Technology Ltd | 1108 |
4 |
| ABB Technology AG | 1256 |
4 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1453 |
4 |
| Toshiba Energy Systems & Solutions Corp. | 1076 |
4 |
| ABB S.p.A. | 442 |
3 |
| Lsis Co., Ltd. | 816 |
3 |
| Hubbell Incorporated | 3259 |
2 |
| Maschinenfabrik Reinhausen GmbH | 744 |
2 |
| NR Electric Co., Ltd. | 324 |
2 |
| NR Engineering Co., Ltd | 286 |
2 |
| Thomas & Betts International LLC | 418 |
2 |
| Gorlan Team, S.L.U. | 28 |
2 |
| The Boeing Company | 20048 |
1 |
| Other owners | 29 |