Yasushi Nakazato
88Patents
22h-index
117Co-inventors
91Inventor score
Filing activity: Jul 16, 1987 → Jun 9, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6381435B2 | Color image forming apparatus | Physics | 97 | Expired |
| US6295435A | Image forming apparatus which corrects deviations between images of different colors | Electricity | 70 | Expired |
| US5740494A | Configured to enhance toner collecting efficiency and toner redepositing efficiency | Physics | 50 | Expired |
| US6400917B2 | Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridges | Physics | 50 | Expired |
| US5638159A | Developing unit for an image forming apparatus and method of collecting bicomponent developer therefrom | Physics | 47 | Expired |
| US5482265A | Sheet feeder for an image forming apparatus | Physics | 45 | Expired |
| US4876606A | Image forming system | Physics | 43 | Expired |
| US6236820A | Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridges | Physics | 42 | Expired |
| US5606408A | Image forming apparatus and cleaning device therefor | Physics | 42 | Expired |
| US6799012B2 | Cleaning device and image forming apparatus using the same | Physics | 40 | Expired |
| US7110917B2 | Abnormality determining method, and abnormality determining apparatus and image forming apparatus using same | Physics | 31 | Expired |
| US6669189B2 | Image forming apparatus | Performing Operations; Transporting | 30 | Expired |
| US5765087A | Color image forming method and color image forming apparatus practicable therewith | Physics | 29 | Expired |
| US6681096B2 | Image formation apparatus, printer, copying machine, and facsimile device | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5095371A | Duplex image forming system with number of single side printed sheets in feed path selected before printing second side | Physics | 27 | Expired |
| US7203431B2 | Abnormality determining method, abnormality determining apparatus, and image forming apparatus | Physics | 27 | Expired |
| US4924320A | Image system with connection to operational units | Physics | 26 | Expired |
| US4855754A | Control device for an image recorder | Physics | 26 | Expired |
| US6819892B2 | Electrophotographic image forming apparatus including air conditioning means for removing harmful substances | Physics | 26 | Expired |
| US6345170B1 | Image forming apparatus for single-sided operation including a reversing device | Physics | 25 | Expired |
| US6987944B2 | Cleaning device and image forming apparatus using the cleaning device | Physics | 24 | Expired |
| US5194879A | Image forming apparatus capable of changing dotting density | Physics | 23 | Expired |
| US6466754B2 | Image forming apparatus for reducing banding caused by vibration of stacked image forming cartridges | Physics | 22 | Expired |
| US6470169B2 | Image forming apparatus and method, a printer, a copying machine, a facsimile device set, and complex machine | Electricity | 22 | Expired |
| US4956678A | Recording sheet transport apparatus | Performing Operations; Transporting | 22 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.