- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 1/56 - Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing
Patent holdings for IPC class H01H 1/56
Total number of patents in this class: 18
10-year publication summary
|
0
|
3
|
0
|
0
|
1
|
0
|
2
|
0
|
1
|
1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2579 |
3 |
| Maschinenfabrik Reinhausen GmbH | 582 |
2 |
| Qatar Foundation for Education, Science and Community Development | 218 |
2 |
| Shanghai Huaming Power Equipment Co., Ltd | 16 |
2 |
| Shanghai Huaming Power Equipment Group Co., Ltd | 2 |
2 |
| DEHN + SÖHNE GmbH + Co. KG | 114 |
1 |
| Saft | 324 |
1 |
| Snaptron, Inc. | 10 |
1 |
| Toshiba Energy Systems & Solutions Corp. | 1152 |
1 |
| Cooper Electronic Technologies (Shanghai) Co Ltd | 1 |
1 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6178 |
1 |
| Sicame South Africa (Pty) Ltd | 2 |
1 |
| Other owners | 0 |