Hirofumi Kako
29Patents
3h-index
8Co-inventors
52Inventor score
Filing activity: Jul 6, 2009 → Feb 27, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9065365B2 | Control device of AC motor | Electricity | 14 | Active |
| US8639405B2 | Electric motor drive system for an electric vehicle | Emerging Cross-Sectional Technologies | 6 | Active |
| US8884564B2 | Voltage converter and voltage converter system including voltage converter | Emerging Cross-Sectional Technologies | 5 | Active |
| US9590551B2 | Control apparatus for AC motor | Electricity | 3 | Active |
| US9077278B2 | AC motor control apparatus | Electricity | 2 | Active |
| US9035580B2 | AC motor control apparatus | Electricity | 2 | Active |
| US9374031B2 | AC motor control apparatus | Electricity | 2 | Active |
| US9093936B2 | Control apparatus for AC motor | Electricity | 2 | Active |
| US9154064B2 | Control device for AC motor | Electricity | 2 | Active |
| US8981688B2 | Control device for AC motor | Electricity | 1 | Active |
| US9007009B2 | Control apparatus for AC motor | Emerging Cross-Sectional Technologies | 1 | Active |
| US9024553B2 | AC motor control apparatus | Electricity | 1 | Active |
| US9041324B2 | AC motor control apparatus | Electricity | 1 | Active |
| US8164287B2 | Motor drive control apparatus and method | Electricity | 1 | Active |
| US9120388B2 | Rotating electrical machine drive system | Emerging Cross-Sectional Technologies | 1 | Active |
| US11594942B2 | Control apparatus for rotating electric machine | Electricity | 0 | Active |
| US9276517B2 | Control device of AC motor | Electricity | 0 | Active |
| US9106170B2 | Control device of AC motor | Electricity | 0 | Active |
| US9154070B2 | Controller for AC motor | Electricity | 0 | Active |
| US9077273B2 | Control device of AC motor | Electricity | 0 | Active |
| US9065378B2 | AC motor control apparatus | Electricity | 0 | Active |
| US8258728B2 | Rotary electric machine control system | Emerging Cross-Sectional Technologies | 0 | Active |
| US9154071B2 | AC motor control apparatus | Electricity | 0 | Active |
| US8957616B2 | Control device for AC motor | Emerging Cross-Sectional Technologies | 0 | Active |
| US8917040B2 | AC motor control apparatus | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.