Yukio Sakano
27Patents
12h-index
20Co-inventors
81Inventor score
Filing activity: Jun 15, 1978 → Mar 2, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5751854A | Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system | Electricity | 101 | Expired |
| US5444543A | Method and apparatus for detecting a closed-loop area of an image | Physics | 91 | Expired |
| US6272248A | Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system | Physics | 66 | Expired |
| US5659628A | Special-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating function | Electricity | 57 | Expired |
| US4760464A | Shading correction system for image scanning apparatus | Electricity | 36 | Expired |
| US4707745A | Digital copier with document image region decision device | Electricity | 36 | Expired |
| US5339171A | Image processing apparatus especially suitable for producing smooth-edged output multi-level tone data having fewer levels than input multi-level tone data | Electricity | 34 | Expired |
| US5652803A | Special-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating function | Electricity | 32 | Expired |
| US5798844A | Duplicator having function concerning specific mark put on recording sheet and image forming apparatus having function of processing confidential documents | Electricity | 31 | Expired |
| US5444518A | Image forming apparatus which adds identification information to recorded images to prevent forgery | Electricity | 31 | Expired |
| US4908716A | Image processing apparatus | Physics | 17 | Expired |
| US5144338A | Image recorder using pulse width modulation | Electricity | 16 | Expired |
| US5283664A | Apparatus for converting and processing input bi-level image data and faithfully rendering tones, colors, and edges | Electricity | 12 | Expired |
| US5801844A | Image processing apparatus | Electricity | 12 | Expired |
| US4984283A | Two dimensional half-tone dot discrimination device | Electricity | 11 | Expired |
| US5473444A | Image processing device having function of detecting dotted-image area | Electricity | 11 | Expired |
| US4875190A | Two-dimensional memory unit having a 2d array of individually addressable blocks each having a 2d array of cells | Physics | 11 | Expired |
| US4479119A | CRT Display device | Physics | 11 | Expired |
| US5144456A | Image processing apparatus and method | Physics | 10 | Expired |
| US5337162A | Image processing apparatus for preventing occurrence of moire in output image | Electricity | 9 | Expired |
| US4615018A | Method for writing data into a memory | Physics | 6 | Expired |
| US4227644A | Document feed apparatus | Physics | 4 | Expired |
| US5579417A | Image processing apparatus | Physics | 4 | Expired |
| US5764812A | Image processing apparatus for providing an isolated-dot removing function | Electricity | 4 | Expired |
| US5771104A | Image processing apparatus having function of magnification changing image data | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.