- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converters; controlling transformers, reactors or choke coils
- H02P 1/52 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor by progressive increase of frequency of supply to motor
Patent holdings for IPC class H02P 1/52
Total number of patents in this class: 75
10-year publication summary
|
9
|
12
|
4
|
1
|
6
|
2
|
2
|
3
|
4
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24990 |
4 |
| Minebea Mitsumi Inc. | 1461 |
4 |
| Robert Bosch GmbH | 40953 |
3 |
| Allegro Microsystems, LLC | 1206 |
3 |
| Toshiba Mitsubishi-Electric Industrial Systems Corporation | 1583 |
3 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
3 |
| Toshiba Corporation | 12017 |
2 |
| Accessesp UK Limited | 30 |
2 |
| Lsis Co., Ltd. | 834 |
2 |
| RENAULT s.a.s. | 5674 |
2 |
| Rocky Research | 75 |
2 |
| Safran Power UK Ltd. | 17 |
2 |
| Sanden Corporation | 859 |
2 |
| Tula Technology, Inc. | 331 |
2 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
2 |
| Seed Terminator Holdings Pty Ltd | 28 |
2 |
| SEG Automotive Germany GmbH | 194 |
2 |
| Copeland LP | 656 |
2 |
| Hitachi Energy Ltd. | 1921 |
2 |
| Renesas Electronics Corporation | 6305 |
1 |
| Other owners | 28 |