Eisaku Murakami
51Patents
19h-index
56Co-inventors
83Inventor score
Filing activity: Oct 28, 1994 → Jun 23, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5617191A | Toner conveyor roller and image forming apparatus having the same | Physics | 50 | Expired |
| US5489747A | Developing device for an image forming apparatus | Physics | 50 | Expired |
| US5826144A | Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller | Physics | 43 | Expired |
| US5625440A | Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering | Physics | 42 | Expired |
| US5697026A | Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships | Physics | 40 | Expired |
| US5689782A | Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers | Physics | 39 | Expired |
| US5666625A | Device for electrostatically developing a latent image on an image carrier | Physics | 38 | Expired |
| US5708942A | Developing device for an image forming apparatus | Physics | 37 | Expired |
| US5625441A | Developing device for an image forming apparatus | Physics | 36 | Expired |
| US5486909A | Developing device for an image forming apparatus | Physics | 35 | Expired |
| US5768665A | Image forming apparatus with bias control to prevent undesirable toner deposition | Physics | 35 | Expired |
| US5879752A | Method of coating a toner conveyor roller | Physics | 35 | Expired |
| US5845183A | Developing device for an image forming apparatus | Physics | 32 | Expired |
| US5897243A | Electrophotographic recording apparatus configured to switch a bias voltage in a developing unit | Physics | 29 | Expired |
| US6033818A | Developing device for an image forming apparatus | Physics | 29 | Expired |
| US5625438A | Toner, and devices for electrostatically depositing a uniform application thereof | Physics | 27 | Expired |
| US5552870A | Developing device for an image forming apparatus | Physics | 26 | Expired |
| US6975830B2 | Image forming apparatus, process cartridge, and waste toner recovery device | Physics | 22 | Expired |
| US5734952A | Developing device for an image forming apparatus and toner cartridge for replenishing a fresh toner to the developing device | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7925188B2 | Development device, process cartridge, and image forming apparatus using the development device | Physics | 19 | Active |
| 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 |
| US5995789A | Toner cartridge including toner outlet openings and toner collection openings arranged substantially in a single array | Emerging Cross-Sectional Technologies | 14 | Expired |
| 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 |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.