Kiyonori Tsuda
67Patents
26h-index
91Co-inventors
91Inventor score
Filing activity: Oct 3, 1995 → Apr 7, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6337957B1 | Image forming apparatus and developing device with improved self toner density control | Physics | 118 | Expired |
| US7072602B2 | Image forming apparatus and image forming unit | Physics | 96 | Expired |
| US6522855B1 | Image forming apparatus and developing apparatus preventing uneven image density | Physics | 91 | Expired |
| US7321744B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 89 | Expired |
| US7480476B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 86 | Active |
| US5915155A | Toner replenishing and developer replacing device for a developing unit of an image forming apparatus | Physics | 79 | Expired |
| US6198895A | Developing device with improved developer circulation and toner density control | Physics | 77 | Expired |
| USD532037S1 | Toner cartridge | General | 70 | Expired |
| US7519317B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 62 | Active |
| US6125243A | Toner replenishing and developer replacing device for a developing unit of an image forming apparatus | Physics | 61 | Expired |
| US8005406B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 59 | Active |
| US5805965A | Developing device for an image forming apparatus having developer distribution features | Physics | 58 | Expired |
| US5659860A | Developing device for an image forming apparatus and toner cartridge | Physics | 56 | Expired |
| US7835673B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 56 | Active |
| US7697870B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 53 | Active |
| US8195070B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 47 | Active |
| US5771426A | Developing device using a toner and carrier mixture | Physics | 45 | Expired |
| US7184691B2 | Toner container, toner supply device and image forming apparatus | Physics | 45 | Expired |
| US5822664A | Developing machine which uses a developing agent including a toner and magnetic particles | Physics | 38 | Expired |
| US5758241A | Developing device for an image forming apparatus | Physics | 32 | Expired |
| US7076192B2 | Powder conveying device and image forming apparatus using the same | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7447469B2 | Image forming device and mounting member for mounting a toner container thereon | Physics | 31 | Expired |
| USD531662S1 | Toner cartridge | General | 30 | Expired |
| US7162189B2 | Method and apparatus of image forming and process cartridge included in the apparatus | Physics | 30 | Expired |
| US7024133B2 | Image forming apparatus using a user installable process cartridge, a method of arranging the process cartridge, and the process cartridge itself | Physics | 30 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.