Hideshi Koiwai
8Patents
4h-index
12Co-inventors
50Inventor score
Filing activity: Feb 14, 1980 → Jun 10, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5347811A | Load-sensing active hydraulic control device for multiple actuators | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US4351356A | Pressure control valve | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4289160A | Pressure control valve | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5168705A | Hydraulic drive system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5348049A | Input apparatus | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5507317A | Input apparatus | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4858651A | Control valve for construction equipment | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5251534A | Input apparatus | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.