- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 3/44 - Protection against moisture or chemical attackWindings specially adapted for operation in liquid or gas
Patent holdings for IPC class H02K 3/44
Total number of patents in this class: 135
10-year publication summary
|
10
|
5
|
16
|
14
|
11
|
8
|
6
|
10
|
11
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 45461 |
7 |
| Nidec Corporation | 2626 |
7 |
| Zero e Technologies, LLC | 11 |
7 |
| Denso Corporation | 24016 |
6 |
| Panasonic Corporation | 20209 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 30568 |
5 |
| Persimmon Technologies, Corp. | 149 |
5 |
| Nidec Sankyo Corporation | 1087 |
4 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12907 |
4 |
| Halliburton Energy Services, Inc. | 20649 |
3 |
| Robert Bosch GmbH | 42222 |
3 |
| Kabushiki Kaisha Yaskawa Denki | 1476 |
3 |
| Kobelco Construction Machinery Co., Ltd. | 1116 |
3 |
| Volkswagen AG | 7300 |
3 |
| Schlumberger Technology Corporation | 10530 |
2 |
| Blue Robotics Inc. | 12 |
2 |
| IHI Corporation | 3382 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2861 |
2 |
| Schunk Hoffmann Carbon Technology AG | 8 |
2 |
| Elaphe Propulsion Technologies, Ltd. | 15 |
2 |
| Other owners | 58 |