Fumio Nakagawa
10Patents
5h-index
35Co-inventors
66Inventor score
Filing activity: May 12, 1980 → Oct 25, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4880282A | Braking system with apparatus for controlling pressure to be accumulated in accumulator for braking motor vehicle | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4421362A | Anti-skid brake control system for wheeled vehicles | Performing Operations; Transporting | 15 | Expired |
| US4624508A | Regulator valve for hydraulic anti-skid apparatus | Performing Operations; Transporting | 11 | Expired |
| US5340623A | Ornamental panel for automobiles | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4665693A | Hydraulic torque converter | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4367941A | Apparatus for silver recovery during photographic processing | Physics | 5 | Expired |
| US4978433A | Method for recovering silver from photographic processing solution | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4690638A | Water cooled scrap preheating bucket | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9327356B2 | Tooth flank machining device and gear manufacturing method | Performing Operations; Transporting | 1 | Active |
| US4343892A | Method and apparatus for silver recovery during photographic processing | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.