Masato Ishida
30Patents
13h-index
41Co-inventors
81Inventor score
Filing activity: Dec 14, 1976 → Feb 24, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4129377A | Variable magnification copying apparatus | Physics | 30 | Expired |
| US4302098A | Printing apparatus | Physics | 27 | Expired |
| US4451136A | Feed control for copying apparatus | Physics | 23 | Expired |
| US4882669A | Multi computer fail safe control apparatus | Physics | 21 | Expired |
| US4145599A | Fixing device of electrophotographic copying machine | Physics | 21 | Expired |
| US4897778A | Motor control device | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4563079A | Image formation apparatus with variable scanning stroke | Physics | 16 | Expired |
| US4766404A | Coordinate input apparatus | Physics | 15 | Expired |
| US4647185A | Developer detecting device | Physics | 14 | Expired |
| US4707111A | Image formation apparatus including means for manually and automatically feeding copy therethrough | Physics | 14 | Expired |
| US4477179A | Image forming apparatus with adjustable light source | Physics | 13 | Expired |
| US4320964A | Image formation apparatus | Physics | 13 | Expired |
| US4538902A | Image formation apparatus | Physics | 13 | Expired |
| US4931882A | Image recording apparatus with evening of the recording medium | Electricity | 9 | Expired |
| US4243311A | Image forming apparatus | Physics | 8 | Expired |
| US4855767A | Image recording apparatus having plural light sources, and having arbitrarity combinable functions | Electricity | 8 | Expired |
| US4436408A | Image forming apparatus including power switch operating means | Physics | 7 | Expired |
| US4561748A | Focus detection device | Physics | 7 | Expired |
| US5006890A | Image forming apparatus with a provision for designating different colored image areas | Physics | 7 | Expired |
| US4333124A | Electrically discharging method and device | Electricity | 6 | Expired |
| US7664567B2 | Warehouse system | Physics | 6 | Expired |
| US4383753A | Image formation apparatus | Physics | 6 | Expired |
| US4758860A | Image forming apparatus | Physics | 6 | Expired |
| US4684239A | Image forming apparatus with automatic regulation in response to image density | Physics | 6 | Expired |
| US7753270B2 | Storing system | Physics | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.