Yasuhisa Kato
35Patents
24h-index
28Co-inventors
85Inventor score
Filing activity: May 6, 1988 → Dec 17, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5400123A | Image forming apparatus capable of erasing an image recorded in a sheet | Physics | 63 | Expired |
| US7054570B2 | Image-forming apparatus | Physics | 40 | Expired |
| US6263185A | Image forming apparatus with a scanner input | Performing Operations; Transporting | 36 | Expired |
| US7116923B2 | Fuser provided with auxiliary power supply device to operate with varying power | Physics | 35 | Expired |
| US6112047A | Image forming apparatus having a substantially vertical sheet transport path and a relaying mechanism that cooperate to transfer a sheet to a sheet discharge section | Performing Operations; Transporting | 32 | Expired |
| US7130555B2 | Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor | Physics | 31 | Expired |
| US6134418A | Image forming apparatus having a casing mounted to the apparatus at an upper portion of a stacking device | Performing Operations; Transporting | 31 | Expired |
| US7609988B2 | Heater, fixing unit and image forming apparatus having power supplied from chargeable auxiliary power supplying unit varied per unit time | Physics | 30 | Expired |
| US7239821B2 | Image forming apparatus including a heating unit | Physics | 30 | Expired |
| US7308216B2 | Image forming apparatus and method to supply power to a fixing device | Physics | 30 | Expired |
| US7333743B2 | Fixing device, image forming apparatus including the fixing device, and fixing method | Physics | 29 | Expired |
| US4843214A | Heat roll type arrangement for electrostatic recording apparatus | Physics | 29 | Expired |
| US7343113B2 | Fixing device, image forming apparatus including the fixing device, and fixing method | Physics | 29 | Expired |
| US5729798A | Heat roller fixing device having positioning members | Physics | 28 | Expired |
| US7209675B2 | Image forming apparatus | Physics | 28 | Expired |
| US7603049B2 | Image formation apparatus and associated method of storing power | Electricity | 28 | Active |
| US7212759B2 | Heating device, fixing device and image forming apparatus | Physics | 27 | Expired |
| US7366432B2 | Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing method | Physics | 26 | Active |
| US7551869B2 | Fixing device, image forming apparatus including the fixing device, and fixing method | Physics | 26 | Expired |
| US5481350A | Heat roller fixing device divided into first and second frames and with positioning members of the first frame | Physics | 26 | Expired |
| US7565087B2 | Fixing device, image forming apparatus including the fixing device, and fixing method | Physics | 26 | Active |
| US7885569B2 | Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit | Physics | 25 | Active |
| US5745247A | Image forming apparatus having a controlled fixing unit | Electricity | 25 | Expired |
| US7356270B2 | Fixing device, image forming apparatus including the fixing device, and fixing method | Physics | 24 | Expired |
| US7496309B2 | Image forming apparatus with auxiliary power source | Physics | 23 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.