Koichiro Yuasa
25Patents
2h-index
26Co-inventors
53Inventor score
Filing activity: Aug 23, 2005 → Jul 22, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7251434B2 | Color image forming apparatus | Physics | 7 | Expired |
| US7224930B2 | Image forming apparatus | Physics | 3 | Expired |
| US9501015B2 | Image forming apparatus utilizing flat pigment | Physics | 2 | Active |
| US8270890B2 | Cleaning device, image holder device, and image forming apparatus | Physics | 2 | Active |
| US9383689B1 | Image forming apparatus that transfers a first image formed using a toner containing a pigment other than a flat pigment and that transfers a second image formed using a toner containing a flat pigment | Physics | 1 | Active |
| US9285718B2 | Image forming apparatus including a first transfer section using toner containing flat metallic pigment particles and second transfer section using toner not containing flat metallic pigment particles | Physics | 1 | Active |
| US7962066B2 | Cleaning unit, image forming apparatus using the same, and cleaner | Physics | 1 | Active |
| US8126385B2 | Image forming mechanism and image forming device | Physics | 1 | Active |
| US9946184B2 | Image forming apparatus using flat toner to obtain a gloss | Physics | 1 | Active |
| US9836008B2 | Image forming apparatus | Physics | 0 | Active |
| US9116472B2 | Image forming apparatus | Physics | 0 | Active |
| US11385574B2 | Rotation device and image forming apparatus | Physics | 0 | Active |
| US7395022B2 | Image forming apparatus with toner recovery system | Physics | 0 | Active |
| US11609514B2 | Transfer member, transfer drum, and image forming apparatus | Physics | 0 | Active |
| US10386748B2 | Transfer device and image forming apparatus that sets charging device based on location of the toner base layer | Physics | 0 | Active |
| US9285734B2 | Image forming apparatus | Physics | 0 | Active |
| US9383695B2 | Image forming apparatus with flat pigment control | Physics | 0 | Active |
| US11768450B2 | Drum member and image forming apparatus | Physics | 0 | Active |
| US10635048B2 | Transfer unit comprising alternating current bias and humidifying unit | Physics | 0 | Active |
| US11579541B2 | Image forming apparatus including a rollshaped charge unit for secondary transfer body | Physics | 0 | Active |
| US9551948B2 | Image forming apparatus fixing of toner containing flat particles | Physics | 0 | Active |
| US11493872B2 | Static elimination device and medium processing device using the same | Physics | 0 | Active |
| US9217965B2 | Image forming apparatus | Physics | 0 | Active |
| US11966176B2 | Transfer member, transfer drum, and image forming apparatus | Physics | 0 | Active |
| US11656563B2 | Jacket, transfer device, and image forming device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.