- All sections
- H - Electricity
- H02J - Circuit arrangements or systems for supplying or distributing electric powersystems for storing electric energy
- H02J 3/12 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
Patent holdings for IPC class H02J 3/12
Total number of patents in this class: 753
10-year publication summary
|
56
|
56
|
56
|
48
|
40
|
35
|
45
|
47
|
48
|
33
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 48172 |
26 |
| Hitachi, Ltd. | 16163 |
23 |
| Siemens AG | 23996 |
14 |
| ABB Schweiz AG | 7665 |
12 |
| Lancium, LLC | 93 |
12 |
| Toshiba Energy Systems & Solutions Corp. | 1149 |
11 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6169 |
11 |
| State Grid Corporation of China | 1404 |
10 |
| Vestas Wind Systems A/S | 3808 |
10 |
| Tsinghua University | 6233 |
8 |
| Dominion Energy, Inc | 167 |
8 |
| NEC Corporation | 37168 |
7 |
| Hubbell Incorporated | 3457 |
7 |
| Korea Electric Power Corporation | 464 |
7 |
| Maschinenfabrik Reinhausen GmbH | 527 |
7 |
| Landis+Gyr Technology, Inc. | 528 |
7 |
| Eaton Intelligent Power Limited | 6268 |
7 |
| Wobben Properties GmbH | 1220 |
6 |
| GE Digital Holdings LLC | 286 |
6 |
| Lutron Technology Company LLC | 2764 |
6 |
| Other owners | 548 |