- All sections
- H - Electricity
- H02P - Control or regulation of electric motors, electric generators or dynamo-electric converterscontrolling 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: 82
10-year publication summary
|
4
|
1
|
6
|
2
|
2
|
3
|
5
|
5
|
1
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Minebea Mitsumi Inc. | 1968 |
5 |
| Siemens AG | 23996 |
4 |
| Robert Bosch GmbH | 44254 |
3 |
| Allegro Microsystems, LLC | 1419 |
3 |
| Tyco Fire & Security GmbH | 3672 |
3 |
| TMEIC Corporation | 921 |
3 |
| Toshiba Corporation | 12594 |
2 |
| Rockwell Automation Technologies, Inc. | 2808 |
2 |
| Hamilton Sundstrand Corporation | 5014 |
2 |
| Accessesp UK Limited | 29 |
2 |
| Lsis Co., Ltd. | 815 |
2 |
| Rocky Research | 56 |
2 |
| Safran Power UK Ltd. | 10 |
2 |
| Sanden Corporation | 1044 |
2 |
| Tula Technology, Inc. | 352 |
2 |
| Nuovo Pignone Tecnologie S.r.l. | 1223 |
2 |
| Seed Terminator Holdings Pty Ltd | 35 |
2 |
| SEG Automotive Germany GmbH | 206 |
2 |
| Copeland LP | 706 |
2 |
| Hitachi Energy Ltd. | 2610 |
2 |
| Other owners | 33 |