Yasuji Yui
19Patents
8h-index
12Co-inventors
65Inventor score
Filing activity: Jun 3, 1988 → Mar 28, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5385416A | Device for identifying an ink ribbon cartridge used in a printer | Performing Operations; Transporting | 54 | Expired |
| US7183894B2 | Communication system for accessing shared entrance of multiple dwelling house | Electricity | 45 | Expired |
| US6039431A | Printer head cleaning device for ink jet printer | Performing Operations; Transporting | 18 | Expired |
| US5290114A | Ink ribbon unit and ink ribbon cassette | Performing Operations; Transporting | 14 | Expired |
| US6972680B2 | Electronic device controlling apparatus and electronic device controlling method | Physics | 13 | Expired |
| US5447382A | Apparatus and method for printing | Performing Operations; Transporting | 11 | Expired |
| US4945382A | A printer for printing a certain image on a sheet of developing paper | Physics | 9 | Expired |
| US7577571B2 | Electronic apparatus, time period charging system, time period charging method, and charging management system for electronic apparatus | Physics | 9 | Expired |
| US7212114B2 | Communication apparatus | Electricity | 7 | Expired |
| US5531527A | Apparatus and method for video printing | Performing Operations; Transporting | 5 | Expired |
| US4914463A | Development of imaging sheets employing photosensitive microcapsules | Physics | 4 | Expired |
| US7580889B2 | Electronic apparatus, charging system and method, charge processing device, storage medium, and prepaid card | Physics | 4 | Expired |
| US5544965A | Printer | Performing Operations; Transporting | 4 | Expired |
| US4987047A | Imaging sheet roll containing photosensitive microcapsules | Physics | 2 | Expired |
| US4885601A | Apparatus for developing imaging sheets employing photosensitive microcapsules | Physics | 2 | Expired |
| US7904390B2 | Management system and management method for charging object apparatus, management apparatus and charging object apparatus | Physics | 2 | Active |
| US7613922B2 | Electronic device controlling apparatus, electronic device controlling system, and electronic device controlling method | Physics | 1 | Expired |
| US8239320B2 | Electronic money apparatus and an electronic circuit | Physics | 1 | Active |
| US7482922B2 | Electronic device controlling apparatus and electronic device controlling method | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.