Sei Onuma
23Patents
4h-index
17Co-inventors
60Inventor score
Filing activity: Mar 25, 1992 → Apr 13, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8050593B2 | Image forming apparatus including a mechanism for reliably mounting a process unit | Physics | 32 | Active |
| US7937015B2 | Image forming apparatus having a development device mixing and conveying developer | Physics | 15 | Active |
| US7941069B2 | Process cartridge having air inlets and outlets for cooling gears disposed in the process cartridge | Physics | 11 | Active |
| US7611106B2 | Attaching structure of supporting legs for apparatus | Physics | 8 | Active |
| US7844196B2 | Image forming apparatus | Physics | 4 | Active |
| US8417142B2 | Image forming apparatus having developing device cooling mechanism, and control method therefor | Physics | 3 | Active |
| US5488490A | Image reading apparatus for reading images recorded on film | Electricity | 3 | Expired |
| US8424863B2 | Paper feeder and image forming apparatus | Performing Operations; Transporting | 3 | Active |
| US8412056B2 | Image forming apparatus performing image formation by conveying paper | Physics | 3 | Active |
| US8311438B2 | Interlock device and image forming apparatus incorporating same | Physics | 2 | Active |
| US7835661B2 | Image forming apparatus | Physics | 2 | Active |
| US7854418B2 | Image forming apparatus including supporting legs | Physics | 2 | Active |
| US8417155B2 | Swing-gear mechanism and image forming apparatus having multiple speed modes | Emerging Cross-Sectional Technologies | 2 | Active |
| US7751749B2 | Image forming apparatus | Physics | 2 | Active |
| US8020848B2 | Paper feeder and image forming apparatus | Performing Operations; Transporting | 2 | Active |
| US8611783B2 | Interlock system and image forming apparatus incorporating interlock system | Physics | 2 | Active |
| US8010012B2 | Image forming apparatus including a latent image carrier and an exposing unit | Physics | 1 | Active |
| US7983596B2 | Housing structure and image forming apparatus | Physics | 1 | Active |
| US7925199B2 | Image forming apparatus | Physics | 1 | Active |
| US9025986B2 | Moving device assembly and image forming apparatus including the moving device assembly | Physics | 0 | Active |
| US8526853B2 | Image forming apparatus having toner passage blocking mechanism | Physics | 0 | Active |
| US9182719B2 | Moving device assembly and image forming apparatus including the moving device assembly | Physics | 0 | Active |
| US8169460B2 | Image forming apparatus | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.