- 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: 765
10-year publication summary
|
68
|
61
|
42
|
71
|
33
|
53
|
40
|
35
|
24
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 47749 |
80 |
| Siemens AG | 24122 |
57 |
| Siemens Energy Global GmbH & Co. KG | 3293 |
34 |
| Eaton Intelligent Power Limited | 6202 |
33 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6199 |
33 |
| Hitachi Energy Ltd. | 2527 |
30 |
| General Electric Technology GmbH | 1342 |
26 |
| ABB Schweiz AG | 7519 |
24 |
| ABB Technology AG | 1229 |
19 |
| Alstom Technology Ltd | 1055 |
18 |
| Toshiba Energy Systems & Solutions Corp. | 1143 |
16 |
| Supergrid Institute | 89 |
14 |
| Lsis Co., Ltd. | 814 |
13 |
| Sony Corporation | 30312 |
12 |
| Ellenberger & Poensgen GmbH | 227 |
11 |
| Hyosung Heavy Industries Corporation | 264 |
10 |
| Toshiba Corporation | 12688 |
9 |
| Siemens Industry, Inc. | 1584 |
8 |
| Schneider Electric Industries SAS | 1576 |
8 |
| Amber Semiconductor, Inc. | 41 |
8 |
| Other owners | 302 |