- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 55/04 - Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type with rotating field windings
Patent holdings for IPC class H02K 55/04
Total number of patents in this class: 203
10-year publication summary
|
8
|
11
|
8
|
14
|
18
|
11
|
7
|
14
|
15
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24353 |
45 |
| Kawasaki Heavy Industries, Limited | 1633 |
11 |
| General Electric Renovables España, S.L. | 308 |
10 |
| Rolls-Royce Deutschland Ltd & Co KG | 820 |
9 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3076 |
9 |
| General Electric Company | 13859 |
7 |
| American Superconductor Corporation | 148 |
7 |
| Industry-Academic Cooperation Foundation, Jeju National University | 14 |
7 |
| National University Corporation Tokyo University of Marine Science and Technology | 105 |
7 |
| Siemens Energy, Inc. | 1706 |
5 |
| Rolls-Royce PLC | 3137 |
4 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
4 |
| Voith Patent GmbH | 2772 |
4 |
| Hyundai Motor Company | 22435 |
3 |
| Eagle Industry Co., Ltd. | 1134 |
3 |
| Envision Energy (Denmark) ApS | 44 |
3 |
| Kato Engineering Inc. | 11 |
3 |
| Toshiba Energy Systems & Solutions Corp. | 1095 |
3 |
| Siemens Gamesa Renewable Energy A/S | 1900 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6262 |
3 |
| Other owners | 53 |