Hisao Yoshikawa
3Patents
3h-index
10Co-inventors
43Inventor score
Filing activity: Dec 4, 1974 → Mar 9, 1983
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4481742A | Machine tool elevating and guiding apparatus | Performing Operations; Transporting | 10 | Expired |
| US3988621A | Supporting structure for a thickness-shear type quartz oscillator | Electricity | 8 | Expired |
| US4536993A | Grinding machine | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.