Yoshiaki Ibuchi
29Patents
7h-index
32Co-inventors
65Inventor score
Filing activity: Jun 18, 1982 → Oct 24, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4674734A | Automatic document feeder | Physics | 28 | Expired |
| US6381442B1 | Image forming apparatus with paper post-treatment device | Physics | 16 | Expired |
| US4480908A | Thermal fixing roller system in a copying machine | Physics | 15 | Expired |
| US5140378A | Image forming apparatus with a pressure development unit | Physics | 11 | Expired |
| US4607946A | Automatic dual electrophotographic copying machine | Physics | 11 | Expired |
| US4748470A | Automatic duplex electrophotographic copying machine | Physics | 9 | Expired |
| US4935768A | Apparatus for transporting a photosensitive sheet | Physics | 8 | Expired |
| US4843427A | Selective charge removal system for copier | Physics | 7 | Expired |
| US5233389A | Driving device for a document platen and copying machine incorporating a movable document platen | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4952968A | Apparatus for the formation of images | Physics | 6 | Expired |
| US5016053A | Stirrer roller of developing device in electrophotographic copying machine | Physics | 6 | Expired |
| US4965622A | Image forming apparatus | Physics | 6 | Expired |
| US4962402A | Pressure device for use in image forming apparatuses | Physics | 5 | Expired |
| US4990953A | Copying apparatus | Physics | 4 | Expired |
| US5267002A | Document platen driving device | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4664503A | Copying machine | Physics | 3 | Expired |
| US4668079A | Electrophotographic copying machine with a function for selecting half-sized copy paper | Physics | 3 | Expired |
| US5021833A | Copying machine with multiple light sources | Physics | 3 | Expired |
| US5160960A | Method of transporting a photosensitive sheet | Physics | 3 | Expired |
| US5084726A | Copying machine | Physics | 2 | Expired |
| US5080010A | Pressure roller device | Physics | 2 | Expired |
| US4951085A | Image forming apparatus | Physics | 2 | Expired |
| US5028952A | Apparatus for the formation of images | Physics | 1 | Expired |
| US5084725A | Process speed control device for image formation | Physics | 1 | Expired |
| US5003344A | Projection unit for a light permeable original in a copying machine | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.