- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils
- H02P 21/16 - Estimation of constants, e.g. the rotor time constant
Patent holdings for IPC class H02P 21/16
Total number of patents in this class: 102
10-year publication summary
|
4
|
5
|
6
|
20
|
16
|
18
|
13
|
12
|
9
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Industrial Equipment Systems Co., Ltd. | 1402 |
12 |
| Mitsubishi Electric Corporation | 44794 |
6 |
| Robert Bosch GmbH | 41765 |
5 |
| GM Global Technology Operations LLC | 14229 |
5 |
| Denso Corporation | 23747 |
5 |
| Samsung Electronics Co., Ltd. | 138729 |
3 |
| Infineon Technologies Austria AG | 2063 |
3 |
| Danfoss Power Electronics A/S | 111 |
3 |
| Hyundai Motor Company | 20442 |
2 |
| NSK Ltd. | 2735 |
2 |
| ABB Schweiz AG | 6624 |
2 |
| Huazhong University of Science and Technology | 989 |
2 |
| Kabushiki Kaisha Yaskawa Denki | 1479 |
2 |
| Lsis Co., Ltd. | 817 |
2 |
| Nidec Corporation | 2601 |
2 |
| Wobben Properties GmbH | 1211 |
2 |
| Seoul National University R&db Foundation | 3302 |
2 |
| Hitachi Astemo, Ltd. | 6076 |
2 |
| Deere & Company | 7336 |
1 |
| Hitachi, Ltd. | 15220 |
1 |
| Other owners | 38 |