Kenichi Hasegawa
123Patents
17h-index
131Co-inventors
89Inventor score
Filing activity: Mar 13, 1978 → Mar 1, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4635292A | Image processor | Physics | 86 | Expired |
| US5400123A | Image forming apparatus capable of erasing an image recorded in a sheet | Physics | 63 | Expired |
| US6914430B2 | NMR probe | Physics | 60 | Expired |
| US7621500B2 | Display holding device | Emerging Cross-Sectional Technologies | 53 | Expired |
| US6496666B2 | Image forming apparatus and method having an improved heating mechanism in fixing device | Physics | 46 | Expired |
| US6102407A | Joint seal and assembly method thereof | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4221317A | Apparatus for controlling the feed of yarn | Emerging Cross-Sectional Technologies | 38 | Expired |
| USD469091S1 | Computer display | General | 35 | Expired |
| US6131009A | Fusing device, method and computer readable medium for an image forming apparatus using controlled rotation of fusing and pressure rollers | Physics | 35 | Expired |
| US5208806A | ISDN terminal equipment operating with circuit switching mode and packet switching mode | Electricity | 34 | Expired |
| US6591081B2 | Fixing apparatus including toner releasing agent applying device and image forming apparatus including the same fixing apparatus | Physics | 34 | Expired |
| US7925177B2 | Image fixing apparatus stably controlling a fixing temperature, and image forming apparatus using the same | Physics | 34 | Active |
| US7515850B2 | Sheet conveying apparatus and image forming apparatus | Physics | 33 | Active |
| USD458602S1 | Computer display | General | 32 | Expired |
| US7630652B2 | Image forming apparatus with enhanced maintainability | Physics | 30 | Active |
| US7070182B2 | Sheet separating mechanism, fixing device, and image forming apparatus | Performing Operations; Transporting | 28 | Expired |
| US8064798B2 | Fixing device and image forming apparatus with heating member heated uniformly in circumferential direction | Physics | 18 | Active |
| USD580934S1 | Computer display | General | 16 | Expired |
| USD543535S1 | Speaker unit for computer display | General | 15 | Expired |
| USD543982S1 | Computer display | General | 15 | Expired |
| US8160484B2 | Fixing device and image forming apparatus incorporating same | Physics | 15 | Active |
| US5466555A | Releasing composition and binder resin composition for electrophotographic toner, and toner containing the same | Physics | 14 | Expired |
| US4385319A | Synchronization signal separating circuit | Electricity | 12 | Expired |
| USD595715S1 | Display | General | 11 | Expired |
| US6329820A | NMR probe | Physics | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.