- 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: 139
10-year publication summary
|
10
|
5
|
16
|
14
|
11
|
8
|
6
|
11
|
12
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nidec Corporation | 2684 |
8 |
| Mitsubishi Electric Corporation | 46590 |
7 |
| Zero e Technologies, LLC | 11 |
7 |
| Denso Corporation | 24562 |
6 |
| Panasonic Corporation | 20030 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 32105 |
5 |
| Persimmon Technologies, Corp. | 152 |
5 |
| Nidec Sankyo Corporation | 1076 |
4 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12749 |
4 |
| Halliburton Energy Services, Inc. | 20977 |
3 |
| Robert Bosch GmbH | 42826 |
3 |
| Kabushiki Kaisha Yaskawa Denki | 1470 |
3 |
| Kobelco Construction Machinery Co., Ltd. | 1157 |
3 |
| Volkswagen AG | 7370 |
3 |
| Schlumberger Technology Corporation | 10914 |
2 |
| Blue Robotics Inc. | 12 |
2 |
| IHI Corporation | 3453 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2879 |
2 |
| Sanden Corporation | 964 |
2 |
| Schunk Hoffmann Carbon Technology AG | 8 |
2 |
| Other owners | 61 |