Takahito Ueno
176Patents
42h-index
48Co-inventors
90Inventor score
Filing activity: Aug 29, 2000 → Jul 26, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6608980B2 | Electrophotographic image forming apparatus to which a process cartridge is detachably mountable and process cartridge comprising cartridge drum positioning portion or recess | Physics | 239 | Expired |
| US6385416B1 | Space securing member, developing device, charging device and process cartridge | Physics | 199 | Expired |
| US7184690B2 | Electrophotographic photosensitive drum supporting apparatus, process cartridge and electrophotographic image forming apparatus | Physics | 177 | Expired |
| US6912365B2 | Process cartridge, unit, and electrophotographic image forming apparatus | Physics | 166 | Expired |
| US6823153B2 | DEVELOPING DEVICE AND PROCESS CARTRIDGE COMPRISING FIRST AND SECOND SEALING MEMBERS AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS COMPRISING A DEVELOPING DEVICE COMPRISING FIRST AND SECOND SEALING MEMBERS | Physics | 164 | Expired |
| US6898391B2 | Process cartridge, electric contact and electrophotographic image forming apparatus | Physics | 159 | Expired |
| US6954601B2 | Process cartridge and electrophotographic image forming apparatus | Physics | 154 | Expired |
| US6714752B2 | Process cartridge, load producing member and electrophotographic image forming apparatus | Physics | 153 | Expired |
| US7209682B2 | Electrophotographic photosensitive drum, process cartridge, and electrophotographic image forming apparatus | Physics | 149 | Expired |
| US7003247B2 | Electrophotographic photosensitive drum, process cartridge, and electrophotographic image forming apparatus | Physics | 148 | Expired |
| US7139502B2 | Process cartridge and electrophotographic image forming apparatus | Physics | 147 | Expired |
| US6829455B2 | Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus | Physics | 144 | Expired |
| US7315710B2 | Electrophotographic photosensitive drum supporting apparatus, process cartridge and electrophotographic image forming apparatus | Physics | 141 | Active |
| US7248810B2 | Cartridge, process cartridge, and electrophotographic image forming apparatus | Physics | 141 | Expired |
| US7092658B2 | Driving force transmission mechanism, image forming apparatus equipped with such a mechanism, and process unit of such an apparatus | Physics | 133 | Expired |
| US8676090B1 | Rotational force transmitting part | Physics | 131 | Active |
| US7164875B2 | Electrophotographic image forming apparatus having a plurality of mounting portions for detachably mounting a plurality process cartridges | Physics | 128 | Expired |
| US6978099B2 | Developing apparatus, process cartridge, and electrophotographic image forming apparatus including an elastic member preventing a gap between a developing agent carrier and a layer thickness limiter from changing, and an electrophotographic image forming apparatus detachably mounting such process cartridge | Physics | 124 | Expired |
| US6834175B2 | Developer agitating member | Physics | 122 | Expired |
| US6954600B2 | Electric contact member applying voltage to charger, process cartridge, and image forming apparatus | Physics | 118 | Expired |
| US7062200B2 | Process cartridge and electrophotographic image forming apparatus | Physics | 118 | Expired |
| US7174122B2 | Developer supply container and electrophotographic image forming apparatus | Emerging Cross-Sectional Technologies | 116 | Expired |
| US6968146B1 | Developer supply container and electrophotographic image forming apparatus | Emerging Cross-Sectional Technologies | 114 | Expired |
| US7366452B2 | Developer supply container and electrophotographic image forming apparatus | Emerging Cross-Sectional Technologies | 112 | Active |
| US6970668B2 | Method of reproducing process cartridge | Physics | 104 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.