Narutaka Yoshida
26Patents
9h-index
47Co-inventors
75Inventor score
Filing activity: Jun 29, 1989 → Mar 24, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5036358A | Image-forming apparatus and a method for a detecting developer amount therein | Physics | 52 | Expired |
| US5371575A | Electrophotographic image forming apparatus with detachable imaging cartridge | Physics | 42 | Expired |
| US5845176A | Process unit having mounting guides and protective covers | Physics | 36 | Expired |
| US4962312A | Laser beam scanning device with plural sources and source-sensitive synchronization | Electricity | 24 | Expired |
| US5068677A | Laser scanner with selected plural beam sources | Electricity | 13 | Expired |
| US5243390A | Device for conveying developer in a developing device | Physics | 10 | Expired |
| US5018045A | Corona discharger for use in electrophotographic copying machine | Electricity | 10 | Expired |
| US5940661A | Image forming apparatus with a charging member which removes smears on an image forming member | Physics | 9 | Expired |
| US5697017A | Image forming apparatus having process cartridge with shutter and cleaning member | Physics | 9 | Expired |
| US5017961A | Image forming apparatus with use of a laser beam | Physics | 5 | Expired |
| US5038181A | Image forming unit having means for preventing a cleansing blade from contacting an image holding member until image forming unit is used | Physics | 4 | Expired |
| US7039331B2 | Image forming apparatus | Physics | 3 | Expired |
| US7027745B2 | Image forming apparatus with notification of remaining life of image forming unit and prohibition of image improvement operation | Physics | 3 | Expired |
| US5122817A | Electrophotographic recorder using a modulated laser beam to scan the original | Physics | 2 | Expired |
| US7020412B2 | Image forming apparatus that prevents generation of image noise by controlling creep of a flexible movable member | Physics | 1 | Expired |
| US5025286A | Laser beam image forming apparatus with SOS Detection | Physics | 1 | Expired |
| US7693463B2 | Developing device and image forming apparatus | Physics | 1 | Active |
| US8693929B2 | Image forming apparatus | Physics | 0 | Active |
| US4916480A | Image forming apparatus with use of a laser beam | Electricity | 0 | Expired |
| US11603250B2 | Cushioning member, packing body, and packing method | Performing Operations; Transporting | 0 | Active |
| US8824938B2 | Image forming apparatus | Physics | 0 | Active |
| US11325770B2 | Buffer member and buffer member forming material | Performing Operations; Transporting | 0 | Active |
| US11208252B2 | Packaging material | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11584581B2 | Cushioning member and method for manufacturing cushioning member | Performing Operations; Transporting | 0 | Active |
| US11505391B2 | Cushioning member, method for manufacturing cushioning member, and packing body | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.