Ryozo Hiraku
4Patents
3h-index
10Co-inventors
47Inventor score
Filing activity: Dec 20, 2001 → Jun 24, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6569055B2 | Four-wheel drive hybrid vehicle | Emerging Cross-Sectional Technologies | 56 | Expired |
| US6979275B2 | Auxiliary transmission in transmission system | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US7204781B2 | Auxiliary transmission in transmission system | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US8512202B2 | Shift controller and shift controlling method | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.