Naotaka Funayama
14Patents
7h-index
29Co-inventors
62Inventor score
Filing activity: Aug 17, 1988 → Feb 15, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4998140A | Developing device for copier with sealing means | Physics | 26 | Expired |
| USD464079S1 | Toner cartridge | General | 25 | Expired |
| US6035168A | Developing device having a reduced width in the horizontal direction | Physics | 17 | Expired |
| US6421517B1 | Toner supply device with rotatable agitating element | Physics | 14 | Expired |
| US6567631B2 | Toner cartridge and image forming apparatus | Physics | 11 | Expired |
| US6711374B2 | Image apparatus with developing cartridge having two accommodating portions | Physics | 8 | Expired |
| USD462713S1 | Developing unit for an image forming apparatus | General | 8 | Expired |
| US6347207B1 | Developing unit and toner replenishing device with conveying apparatus | Physics | 5 | Expired |
| US4982690A | Developing device with magnetic supply seals | Physics | 4 | Expired |
| US4980728A | Developing device with a magnetic brush turning plate | Physics | 4 | Expired |
| US5144382A | Developing device with a scraping unit arranged to form a stirring area | Physics | 2 | Expired |
| US5172166A | Developing apparatus | Physics | 2 | Expired |
| US6603940B2 | Detachable process cartridge for image forming apparatus | Physics | 1 | Expired |
| US5358819A | Developer for electrophotography | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.