Junichi Koiso
19Patents
9h-index
22Co-inventors
72Inventor score
Filing activity: Mar 18, 1975 → Jul 15, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4819578A | Toner collecting device | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4218132A | Drum cleaning apparatus for electrophotographic copying machine | Physics | 23 | Expired |
| US4300757A | Apparatus for receiving recording sheets in upset state for copying machine | Performing Operations; Transporting | 22 | Expired |
| US4354763A | Dry-type developing device | Physics | 16 | Expired |
| US7043172B2 | Image forming apparatus | Physics | 12 | Expired |
| US4974031A | Toner collecting device | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4360944A | Toner transporting device for an electrostatic recording apparatus | Physics | 11 | Expired |
| US4211484A | Drum cleaning blade for image transfer type electrophotographic copying machine | Physics | 10 | Expired |
| US4375327A | Roller fixing device | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4395114A | Toner recovery device | Physics | 9 | Expired |
| US4357097A | Electrostatic recording apparatus having a toner recovering device | Physics | 7 | Expired |
| US4403852A | Developer recovering device for electrostatic image reproducing system | Physics | 5 | Expired |
| US6580897B2 | Cleaning device, and image forming method and image forming apparatus using the cleaning device | Physics | 4 | Expired |
| US4165173A | Toner removing means for photosensitive drums for electrophotography | Physics | 4 | Expired |
| US7079785B2 | Image developing apparatus to develop a latent image in a developing area on an image bearing member | Physics | 3 | Expired |
| US4433904A | Electrophotographic copying machine | Physics | 3 | Expired |
| US7340195B2 | Image forming apparatus having a scattered toner sucking port | Physics | 2 | Expired |
| US6591075B2 | Cleaning method of toner image carrying body, cleaning device of the toner image carrying body and image forming apparatus equipped therewith | Physics | 2 | Expired |
| US3988583A | Electrostatic imaging process using X-rays | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.