Shuta Hamada
42Patents
9h-index
20Co-inventors
71Inventor score
Filing activity: Sep 29, 1995 → Jul 3, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5608498A | Image forming apparatus in which at least an image carrying member and plural exposure means are constructed in a single body | Physics | 36 | Expired |
| US5754210A | Optical system assembling device for an image forming apparatus | Physics | 27 | Expired |
| US5752133A | Electrophotographic color image forming apparatus with image exposure means inside of photoreceptor drum | Physics | 19 | Expired |
| US5758243A | Color image forming apparatus | Physics | 14 | Expired |
| US7152970B2 | Image forming apparatus having a plurality of printing heads | Performing Operations; Transporting | 13 | Expired |
| US5557394A | Color image forming apparatus having a transparent photoreceptor | Physics | 12 | Expired |
| US5729809A | Color image forming apparatus with intermediate transfer | Physics | 11 | Expired |
| US5886728A | Image forming apparatus having a plurality of exposure devices which are radially arranged on a common supporting member with respect to a rotation axis of an image forming body | Electricity | 10 | Expired |
| US5722013A | Color image forming apparatus having a supporting member and a plurality of image exposure devices mounted inside a cylindrical image forming body | Physics | 10 | Expired |
| US6058287A | Image forming apparatus having sheet conveyance device | Physics | 8 | Expired |
| US6438841B1 | Device for holding fixing roller, method for manufacturing fixing roller, and image forming apparatus | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5840461A | Process for producing cylindrical substrate for image formation | Physics | 7 | Expired |
| US5615002A | Electrophotographic color image forming apparatus with a plurality of image exposing devices arranged around outer circumference of photoreceptor | Physics | 7 | Expired |
| US6405013B2 | Fixing apparatus with a ray transmitting device inside one roller | Physics | 7 | Expired |
| US5784666A | Color image forming apparatus | Physics | 6 | Expired |
| US5930002A | Image forming apparatus having a single-body image forming drum unit | Physics | 5 | Expired |
| US7097297B2 | Ink jet printer, and image printing apparatus having the printer | Performing Operations; Transporting | 4 | Expired |
| US5708930A | Color image forming apparatus having a transparent image forming body | Physics | 4 | Expired |
| US6041204A | Color image forming apparatus with an organic photoconductor | Physics | 3 | Expired |
| US7308212B2 | Color image forming apparatus | Physics | 3 | Expired |
| US7444098B2 | Image forming apparatus with cleaning unit | Physics | 3 | Active |
| US7209692B2 | Color image forming apparatus and discharging device before secondary transfer of the same | Physics | 3 | Expired |
| US7298997B2 | Color image forming apparatus with pre-charging unit and potential adjustment unit | Physics | 3 | Expired |
| US7593665B2 | Image forming apparatus with cleaning unit | Physics | 2 | Active |
| US7490931B2 | Image forming apparatus having a plurality of printing heads | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.