- All sections
- H - Electricity
- H02J - Circuit arrangements or systems for supplying or distributing electric powersystems for storing electric energy
- H02J 3/34 - Arrangements for transfer of electric power between networks of substantially different frequency
Patent holdings for IPC class H02J 3/34
Total number of patents in this class: 163
10-year publication summary
|
14
|
11
|
12
|
10
|
11
|
10
|
11
|
5
|
9
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ABB Schweiz AG | 7761 |
7 |
| Siemens AG | 23934 |
6 |
| Mitsubishi Electric Corporation | 48460 |
6 |
| Huawei Digital Power Technologies Co. Ltd. | 2562 |
5 |
| Hitachi Energy Ltd. | 2669 |
5 |
| ABB Research Ltd. | 767 |
4 |
| Tae Technologies, Inc. | 253 |
4 |
| Enel X North America, Inc. | 127 |
4 |
| Siemens Energy Global GmbH & Co. KG | 3517 |
4 |
| Qbyss Ltd | 22 |
4 |
| International Business Machines Corporation | 62864 |
3 |
| Hitachi, Ltd. | 16221 |
3 |
| SMA Solar Technology AG | 907 |
3 |
| Folquer Holdings Limited | 6 |
3 |
| Siemens Energy AS | 143 |
3 |
| EI Electronics LLC d/b/a Electro Industries/gauge Tech | 107 |
3 |
| Denso Corporation | 25820 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 34623 |
2 |
| Aker Solutions AS | 174 |
2 |
| Kunming University of Science and Technology | 248 |
2 |
| Other owners | 88 |