Ryuichi Nakajima
4Patents
2h-index
8Co-inventors
41Inventor score
Filing activity: Apr 9, 1991 → Aug 30, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5090052A | Telephone system with multiple extension telephones | Electricity | 95 | Expired |
| US8857890B2 | Driving apparatus for opening and closing body for vehicle | Emerging Cross-Sectional Technologies | 5 | Active |
| US12009817B2 | Flip-flop circuit, semiconductor integrated circuit device, and vehicle | Electricity | 1 | Active |
| US11381182B2 | Vehicle door opening/closing device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.