- All sections
- H - Electricity
- H01H - Electric switchesrelaysselectorsemergency protective devices
- H01H 33/59 - Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
Patent holdings for IPC class H01H 33/59
Total number of patents in this class: 743
10-year publication summary
|
71
|
68
|
61
|
42
|
71
|
33
|
54
|
39
|
29
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 46037 |
80 |
| Siemens AG | 24505 |
55 |
| Siemens Energy Global GmbH & Co. KG | 2948 |
34 |
| Eaton Intelligent Power Limited | 5983 |
32 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6270 |
32 |
| General Electric Technology GmbH | 1368 |
26 |
| Hitachi Energy Ltd. | 2204 |
26 |
| ABB Schweiz AG | 6958 |
24 |
| ABB Technology AG | 1255 |
19 |
| Alstom Technology Ltd | 1108 |
18 |
| Toshiba Energy Systems & Solutions Corp. | 1077 |
14 |
| Supergrid Institute | 85 |
14 |
| Lsis Co., Ltd. | 816 |
13 |
| Sony Corporation | 31065 |
12 |
| Ellenberger & Poensgen GmbH | 229 |
11 |
| Hyosung Heavy Industries Corporation | 253 |
10 |
| Toshiba Corporation | 12334 |
8 |
| Schneider Electric Industries SAS | 1484 |
8 |
| Amber Semiconductor, Inc. | 37 |
8 |
| ARC Suppression Technologies | 40 |
7 |
| Other owners | 292 |