Toshiyuki Ajima
46Patents
6h-index
97Co-inventors
72Inventor score
Filing activity: Oct 7, 1991 → Aug 31, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5243732A | Vacuum cleaner with fuzzy logic control | Emerging Cross-Sectional Technologies | 97 | Expired |
| US7161323B2 | Motor drive apparatus, electric actuator and electric power steering apparatus | Electricity | 50 | Expired |
| US7294988B2 | Synchronous motor drive unit and a driving method thereof | Emerging Cross-Sectional Technologies | 49 | Expired |
| US7746023B2 | Position detecting device and synchronous motor driving device using the same | Electricity | 25 | Active |
| US7271557B2 | AC motor driving apparatus and method of controlling the same | Electricity | 16 | Active |
| US5381584A | Vacuum cleaner | Human Necessities | 13 | Expired |
| US9831814B2 | Electric motor drive control device, electrically driven power steering device, electrically driven brake device, and electrically driven pump device | Electricity | 4 | Active |
| US8833869B2 | Vehicle brake system | Performing Operations; Transporting | 3 | Active |
| US8491280B2 | Oil-flooded screw compressor, motor drive system, and motor control device | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9180852B2 | Electric booster | Performing Operations; Transporting | 3 | Active |
| US9819299B2 | Inverter device and electric vehicle | Emerging Cross-Sectional Technologies | 3 | Active |
| US10411621B2 | Drive device for three-phase synchronous motor | Electricity | 3 | Active |
| US9278676B2 | Brake control device | Performing Operations; Transporting | 3 | Active |
| US6950276B2 | Disk drive motor and disk drive storage device incorporating same | Physics | 3 | Expired |
| US9610972B2 | Inverter device | Electricity | 2 | Active |
| US7414376B2 | Motor drive apparatus and method and electrically driven brake apparatus | Emerging Cross-Sectional Technologies | 2 | Active |
| US9531305B2 | Inverter apparatus | Electricity | 2 | Active |
| US6943984B2 | Magnetic disc apparatus having stator structure with reduced distortion | Physics | 2 | Expired |
| US9143065B2 | Motor drive device | Electricity | 2 | Active |
| US8882476B2 | Oil-flooded screw compressor, motor drive system, and motor control | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11356037B2 | Inverter control device, inverter control method, inverter control program | Electricity | 1 | Active |
| US12074542B2 | Motor control device, electromechanical integrated unit, and electric vehicle system | Emerging Cross-Sectional Technologies | 1 | Active |
| US11196377B2 | Motor drive system | Electricity | 1 | Active |
| US11967912B2 | Motor control device and electric brake device including the same | Electricity | 0 | Active |
| US11646690B2 | Motor control device and electric vehicle system | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.