- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 51/22 - Polarised relays
Patent holdings for IPC class H01H 51/22
Total number of patents in this class: 338
10-year publication summary
|
21
|
18
|
10
|
9
|
3
|
5
|
2
|
6
|
2
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Omron Corporation | 7358 |
33 |
| Fujitsu Component Limited | 256 |
22 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
12 |
| Fuji Electric FA Components & Systems Co., Ltd. | 246 |
10 |
| Rushmore Technologies, LLC | 106 |
9 |
| TE Connectivity Solutions GmbH | 3047 |
8 |
| International Business Machines Corporation | 62621 |
7 |
| Eaton Intelligent Power Limited | 6236 |
7 |
| National Semiconductor Corporation | 846 |
6 |
| Analog Devices, Inc. | 3321 |
6 |
| TE Connectivity Germany GmbH | 611 |
6 |
| Panasonic Corporation | 19060 |
5 |
| Hongfa Holdings U.S., Inc. | 12 |
5 |
| Phoenix Contact GmbH & Co. KG | 2292 |
5 |
| Qorvo US, Inc. | 2394 |
5 |
| Xiamen Hongfa Electroacoustic Co., Ltd. | 31 |
5 |
| Johnson Electric International AG | 379 |
5 |
| Siemens AG | 24033 |
4 |
| Denso Corporation | 25513 |
3 |
| Rockwell Automation Technologies, Inc. | 2801 |
3 |
| Other owners | 172 |