Eiji Tsutsui
18Patents
8h-index
24Co-inventors
68Inventor score
Filing activity: Jul 27, 1982 → Oct 29, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5028966A | Image-forming machine | Physics | 61 | Expired |
| US5241353A | Paper-discharging tray | Performing Operations; Transporting | 58 | Expired |
| US4563074A | Engagement mechanism for a developing means in electrostatic copying machine | Physics | 31 | Expired |
| US5111244A | Image-forming machine with improved process and optional unit assemblies | Physics | 22 | Expired |
| US5202728A | Image-forming machine with improved developer agitating means, developer regulating blade means, cleaning device, and toner recovery system | Physics | 18 | Expired |
| US5027152A | Image-forming machine having a process unit detachably mountable on a movable supporting and guiding means | Physics | 16 | Expired |
| USD322279S | Process unit for copying machine | General | 13 | Expired |
| US4710017A | Optical unit holding device for copying machines | Physics | 9 | Expired |
| USD324540S | Computer peripheral equipment printer | General | 8 | Expired |
| US4607943A | Control circuit for an electrostatic copying apparatus | Physics | 8 | Expired |
| USD340470S | Laser beam printer | General | 7 | Expired |
| US4728988A | Driving apparatus for optical systems of photocopier | Physics | 7 | Expired |
| US4469428A | Corona discharging apparatus used in an electrostatic photographic copying machine | Physics | 7 | Expired |
| USD321712S | Sheet feeder | General | 6 | Expired |
| US4571062A | Electrostatic copying process and apparatus | Physics | 5 | Expired |
| US4516849A | Cleaning device for an electrostatic photographic copying machine | Physics | 4 | Expired |
| US4551013A | Electrostatic copying process | Physics | 1 | Expired |
| US4568170A | Supporting frame for a variable ratio electrostatic copying apparatus | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.