- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/66 - Vacuum switches
Patent holdings for IPC class H01H 33/66
Total number of patents in this class: 586
10-year publication summary
|
46
|
35
|
31
|
26
|
25
|
17
|
24
|
22
|
18
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24421 |
78 |
| Mitsubishi Electric Corporation | 46346 |
42 |
| ABB Schweiz AG | 7023 |
41 |
| ABB Technology AG | 1252 |
35 |
| Eaton Intelligent Power Limited | 6012 |
31 |
| S & C Electric Co. | 292 |
27 |
| Hubbell Incorporated | 3293 |
21 |
| Siemens Energy Global GmbH & Co. KG | 3007 |
20 |
| Lsis Co., Ltd. | 816 |
17 |
| Schneider Electric Industries SAS | 1494 |
14 |
| Meidensha Corporation | 896 |
12 |
| G & W Electric Company | 146 |
10 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1465 |
10 |
| S&C Electric Company | 185 |
10 |
| Eaton Corporation | 1815 |
9 |
| Vacuum Interrupters, Inc. | 14 |
8 |
| Hitachi, Ltd. | 15537 |
7 |
| ABB Research Ltd. | 879 |
6 |
| Japan AE Power Systems Corporation | 22 |
6 |
| Xi'an Jiaotong University | 664 |
6 |
| Other owners | 176 |