Kazuyuki Sugihara
35Patents
20h-index
31Co-inventors
81Inventor score
Filing activity: Nov 29, 1989 → Aug 14, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7212773B2 | Image forming apparatus | Physics | 99 | Expired |
| US6104900A | Image forming apparatus having an improved developer-supplying mechanism and method thereof | Physics | 54 | Expired |
| US5765059A | Developing device for image forming apparatus and toner container therefor | Physics | 53 | Expired |
| US6336020B1 | Image forming apparatus having an improved developer-supplying mechanism and method thereof | Physics | 49 | Expired |
| US5384628A | Developing device for image forming equipment | Physics | 44 | Expired |
| US6122469A | Image forming apparatus including a preventing mechanism for preventing a developing unit from rotating | Physics | 42 | Expired |
| US5991569A | PC drum integrated revolving type developing unit with pull-out supporter | Physics | 40 | Expired |
| US6070037A | Image forming apparatus having improved developer limiting member | Physics | 38 | Expired |
| US5758235A | Toner container for a rotary developing device | Physics | 38 | Expired |
| US5671470A | Color image forming device which changes developing bias when switching between developer units | Physics | 35 | Expired |
| US5768664A | Toner container for a rotary developing device | Physics | 34 | Expired |
| US5552877A | Image forming apparatus with controlled drive for accurately positioning developing sections of a rotary developing device | Physics | 33 | Expired |
| US6226481A | Image forming apparatus with control over developing unit during an idle running of an intermediate image transfer body | Physics | 32 | Expired |
| US5826146A | Color image forming device which changes developing bias when switching between developer units | Physics | 31 | Expired |
| US4975748A | Method of removing a film from an image carrier | Physics | 30 | Expired |
| US6072967A | PC drum integrated revolving type developing unit with pull-out supporter | Physics | 27 | Expired |
| US5617198A | Image forming apparatus having rotary developing device | Physics | 26 | Expired |
| US5646721A | Image forming apparatus for supplying power to members of a rotary developing device | Physics | 22 | Expired |
| US5787328A | Rotary developing device for an image forming apparatus | Physics | 21 | Expired |
| US5657115A | Rotary developing device for an image forming apparatus | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7043182B2 | Developer regulating member, developing device, electrophotographic image forming process cartridge, and image forming apparatus including the developer regulating member | Physics | 20 | Expired |
| US5105226A | Developer carrier of a developing device for an image forming apparatus | Physics | 19 | Expired |
| US5612769A | Submodular unit for use in a modular rotary developing apparatus | Physics | 18 | Expired |
| US5761576A | Image forming apparatus for supplying power to members of a rotary developing device | Physics | 18 | Expired |
| US6615014B2 | Method and apparatus for image forming capable of performing an effective mixing of development agent | Physics | 18 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.