- All sections
- H - Electricity
- H02J - Circuit arrangements or systems for supplying or distributing electric power; systems 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: 644
10-year publication summary
|
52
|
76
|
56
|
56
|
55
|
47
|
40
|
30
|
41
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
26 |
| Hitachi, Ltd. | 16452 |
21 |
| Siemens AG | 24990 |
13 |
| Lancium, LLC | 92 |
12 |
| Toshiba Energy Systems & Solutions Corp. | 954 |
11 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
11 |
| State Grid Corporation of China | 1308 |
10 |
| Vestas Wind Systems A/S | 3459 |
10 |
| ABB Schweiz AG | 6321 |
9 |
| Dominion Energy, Inc | 178 |
8 |
| Eaton Intelligent Power Limited | 6113 |
8 |
| NEC Corporation | 32703 |
7 |
| Korea Electric Power Corporation | 467 |
7 |
| Wobben Properties GmbH | 1207 |
7 |
| GE Digital Holdings LLC | 351 |
7 |
| Lutron Technology Company LLC | 2300 |
7 |
| Battelle Memorial Institute | 2356 |
6 |
| General Electric Technology GmbH | 1657 |
6 |
| Kyocera Corporation | 12735 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
5 |
| Other owners | 448 |