Masanori Kawasumi
56Patents
16h-index
112Co-inventors
87Inventor score
Filing activity: Apr 10, 1995 → Dec 26, 2018
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 |
| 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 |
| US8195070B2 | Developer container, developer supplying device, and image forming apparatus | Emerging Cross-Sectional Technologies | 47 | Active |
| 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 |
| US6807390B2 | Image forming apparatus | Physics | 20 | Expired |
| US7925188B2 | Development device, process cartridge, and image forming apparatus using the development device | Physics | 19 | Active |
| US6807395B2 | Computer assisted learning system, storage server used for computer assisted learning system and computer readable media recording program used in storage server | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7313347B2 | Cleaning device, process cartridge, image forming apparatus and toner | Physics | 18 | Expired |
| US7062194B2 | Charging device, and process cartridge and image forming apparatus including the charging device | Physics | 18 | Expired |
| US7110696B2 | Cleaning unit, process cartridge, and image forming apparatus | Physics | 16 | Expired |
| US7212767B2 | Image forming apparatus and process cartridge removably mounted thereto | Physics | 15 | Expired |
| US7373101B2 | Method and apparatus for image forming and effectively applying lubricant to an image bearing member | Physics | 15 | Active |
| US7272354B2 | Cleaning unit and image forming apparatus having multiple cleaning blades | Physics | 14 | Expired |
| US7139504B2 | Charging device, and process cartridge and image forming apparatus using the charging device | Physics | 14 | Expired |
| US7149465B2 | Cleaning unit, process cartridge, image forming apparatus, and toner | Physics | 14 | Expired |
| US7630659B2 | Method and apparatus for image forming capable of effectively performing a charging process | Physics | 14 | Active |
| US7295796B1 | Image forming apparatus having a temporary toner holding device and a toner collecting device | Physics | 13 | Expired |
| US7672605B2 | Transfer device and image forming apparatus | Physics | 13 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.