Hirotaka Hatta
14Patents
4h-index
28Co-inventors
60Inventor score
Filing activity: Jan 4, 1994 → Dec 29, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6546228B2 | Image forming apparatus conveniently upgradable to a duplex image forming apparatus | Physics | 10 | Expired |
| US5852762A | Toner magazine and cleaner for an electrophotographic apparatus | Physics | 8 | Expired |
| US5697038A | Cleaner and toner magazine for electrophotographic apparatus | Physics | 6 | Expired |
| US5555081A | Cleaner and toner magazine for electrophotographic apparatus | Physics | 4 | Expired |
| US8396383B2 | Image forming apparatus and process cartridge | Physics | 4 | Active |
| US9201378B2 | Cleaning unit, process cartridge incorporating same, and image forming apparatus incorporating same | Physics | 3 | Active |
| US5873021A | Cleaner and toner magazine for electrophotographic apparatus | Physics | 3 | Expired |
| US7953362B2 | Image forming apparatus, process cartridge, and lubricant applicator | Physics | 1 | Active |
| US9170554B2 | Cleaning device, process cartridge, and image forming apparatus | Physics | 1 | Active |
| US9195204B2 | Image forming apparatus | Physics | 0 | Active |
| US9141020B2 | Charger positioning adjuster and image forming apparatus incorporating same | Physics | 0 | Active |
| US9268292B2 | Image forming apparatus including first and second bias voltage supply devices | Physics | 0 | Active |
| US12416894B2 | Image forming apparatus | Physics | 0 | Active |
| US7603053B2 | Image forming apparatus | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.