- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 51/01 - Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
Patent holdings for IPC class H01H 51/01
Total number of patents in this class: 72
10-year publication summary
|
6
|
7
|
7
|
2
|
8
|
4
|
3
|
6
|
6
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Xiamen Hongfa Electric Power Controls Co., Ltd. | 213 |
11 |
| LS ELECTRIC Co., Ltd | 770 |
7 |
| Xiamen Hongfa Electroacoustic Co., Ltd. | 31 |
3 |
| Eaton Intelligent Power Limited | 6121 |
3 |
| Guangxi Ramway Technology Development Co., Ltd. | 5 |
3 |
| Siemens AG | 24337 |
2 |
| Fujitsu Component Limited | 256 |
2 |
| Huawei Technologies Co., Ltd. | 118634 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 33120 |
2 |
| Hamilton Sundstrand Corporation | 5004 |
2 |
| Harbin Institute of Technology | 465 |
2 |
| Microsemi Corporation | 112 |
2 |
| Atomic Machines, Inc. | 24 |
2 |
| Safran Electrical & Power USA, LLC | 51 |
2 |
| Yazaki Corporation | 6900 |
1 |
| Omron Corporation | 7334 |
1 |
| Apollo Fire Detectors Limited | 55 |
1 |
| Chengli Li | 78 |
1 |
| Fuji Electric FA Components & Systems Co., Ltd. | 254 |
1 |
| Ice Air, LLC | 18 |
1 |
| Other owners | 21 |