- All sections
- H - Electricity
- H01H - Electric switches; relays; selectors; emergency protective devices
- H01H 33/664 - Contacts; Arc-extinguishing means, e.g. arcing rings
Patent holdings for IPC class H01H 33/664
Total number of patents in this class: 302
10-year publication summary
|
32
|
22
|
29
|
22
|
21
|
32
|
20
|
36
|
34
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24990 |
45 |
| Mitsubishi Electric Corporation | 43934 |
30 |
| Eaton Intelligent Power Limited | 6113 |
29 |
| Meidensha Corporation | 823 |
20 |
| LS ELECTRIC Co., Ltd | 506 |
20 |
| ABB Schweiz AG | 6321 |
14 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
13 |
| Schneider Electric Industries SAS | 1376 |
11 |
| Eaton Corporation | 1839 |
10 |
| ABB Technology AG | 1301 |
9 |
| Alstom Technology Ltd | 1196 |
7 |
| S&C Electric Company | 172 |
7 |
| Hubbell Incorporated | 3052 |
5 |
| Maschinenfabrik Reinhausen GmbH | 749 |
5 |
| S & C Electric Co. | 282 |
4 |
| Hitachi, Ltd. | 16452 |
3 |
| Camlin Technologies Limited | 10 |
3 |
| G & W Electric Company | 122 |
3 |
| Lsis Co., Ltd. | 834 |
3 |
| Xi'an Jiaotong University | 579 |
3 |
| Other owners | 58 |