Ryuta Takeichi
27Patents
20h-index
41Co-inventors
81Inventor score
Filing activity: Nov 3, 1998 → Jun 22, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| 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 |
| US7519317B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 62 | Active |
| US6060205A | Image forming apparatus | Physics | 61 | Expired |
| US8005406B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 59 | Active |
| 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 |
| US6697595B2 | Method and apparatus for forming an image with no degradation | Physics | 51 | Expired |
| US8195070B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 47 | Active |
| US6363237B1 | Unit for imparting lubricity to electrophotographic photoconductor, electrophotographic image formation apparatus including the unit, and image formation method using the apparatus | Physics | 45 | Expired |
| US6562529B1 | Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same | Physics | 45 | Expired |
| US6160977A | Image forming apparatus and device for applying a lubricant to an image | Physics | 40 | Expired |
| US6558862B2 | Electrophotographic photoreceptor and image forming apparatus using the photoreceptor | Physics | 37 | Expired |
| US6014532A | Image forming apparatus | Physics | 36 | Expired |
| US6521386B1 | Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor | Physics | 35 | Expired |
| US6118964A | Multi-functional contact-type charging unit and image transfer unit | Physics | 33 | Expired |
| US7076192B2 | Powder conveying device and image forming apparatus using the same | Emerging Cross-Sectional Technologies | 31 | 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 |
| US7398038B2 | Image forming apparatus using a toner container and a process cartridge | Physics | 29 | Expired |
| US7136610B2 | Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself | Physics | 23 | Expired |
| US7212767B2 | Image forming apparatus and process cartridge removably mounted thereto | Physics | 15 | Expired |
| US7221887B2 | Image forming apparatus that recovers waste toner inside thereof | Physics | 14 | Expired |
| US6706459B2 | Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same | Physics | 11 | Expired |
| US7277667B2 | Endless belt device and image forming apparatus using the device | Physics | 8 | Expired |
| US7421239B2 | Cleaning apparatus for removing toner adhered onto endless belt | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.