- All sections
- H - Electricity
- H01H - Electric switches; relays; selectors; emergency protective devices
- H01H 33/38 - Power arrangements internal to the switch for operating the driving mechanism using electromagnet
Patent holdings for IPC class H01H 33/38
Total number of patents in this class: 133
10-year publication summary
|
15
|
15
|
7
|
7
|
15
|
7
|
10
|
8
|
2
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
37 |
| Hitachi, Ltd. | 16452 |
12 |
| ABB Schweiz AG | 6321 |
11 |
| Siemens AG | 24990 |
7 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
7 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
6 |
| S&C Electric Company | 172 |
4 |
| Eaton Intelligent Power Limited | 6113 |
4 |
| Hawker Siddeley Switchgear Limited | 8 |
3 |
| MITSUBISHI DENKI KABUSHIKI KAISHA also trading as Mitsubishi Electric Corporation | 1082 |
3 |
| Toshiba Corporation | 12017 |
2 |
| Hilti Aktiengesellschaft | 3227 |
2 |
| ABB Technology AG | 1301 |
2 |
| Fuji Electric Systems Co., Ltd. | 89 |
2 |
| Japan AE Power Systems Corporation | 29 |
2 |
| Lsis Co., Ltd. | 834 |
2 |
| Meidensha Corporation | 823 |
2 |
| Schneider Electric Industries SAS | 1376 |
2 |
| Hyosung Heavy Industries Corporation | 234 |
2 |
| Shandong Guangyun Intelligent Technology Co., Ltd. | 38 |
2 |
| Other owners | 19 |