Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6499829 | Color image forming apparatus | Sunao Tabata, Takayuki Sawada | 2002-12-31 |
| 6377361 | Image processing device and image forming apparatus | Eiichi Sakaue, Naofumi Yamamoto, Hidekazu Sekizawa | 2002-04-23 |
| 6323876 | Image processing apparatus having image region specifying function | Gururaj Rao | 2001-11-27 |
| 6263118 | Image processing apparatus | Gururaj Rao | 2001-07-17 |
| 6084988 | Image processing apparatus | Gururaj Rao | 2000-07-04 |
| 6031638 | Image forming device | Gururaj Rao | 2000-02-29 |
| 5898507 | Image processing apparatus | Rintaro Nakane | 1999-04-27 |
| 5790704 | Image processing apparatus for performing random mask process | Gururaj Rao | 1998-08-04 |
| 5701364 | Image processing apparatus | — | 1997-12-23 |
| 5687252 | Image processing apparatus | Gururaj Rao | 1997-11-11 |
| 5640249 | Image processing apparatus using derived ordered dither matrix | Gururaj Rao | 1997-06-17 |
| 5613017 | Apparatus for processing image data among media having different image output sizes | Gururaj Rao | 1997-03-18 |
| 5604578 | Color image forming apparatus having a function of determining a charge value charged on a customer according to an amount of recording material | Kunihiro Shibuya | 1997-02-18 |
| 5481293 | Image processing device for correcting an error in a multilevel image signal and for printing the image | — | 1996-01-02 |
| 5307426 | Image processing apparatus with improved dithering scheme | Hitoshi Yoneda | 1994-04-26 |
| 5299034 | Image processing apparatus and image processing method for reproducing a color image from color signals having different phases | Hitoshi Yoneda | 1994-03-29 |
| 5280546 | Image processing apparatus for variably magnifying image and controlling image density | Hironobu Machida, Hitoshi Yoneda | 1994-01-18 |
| 5260810 | Image processing apparatus with improved dithering scheme | Hitoshi Yoneda | 1993-11-09 |
| 5109436 | Image data processing system with adaptive binary quantization | Hironobu Machida, Hitoshi Yoneda | 1992-04-28 |
| 5077812 | Image processing apparatus | Hitoshi Yoneda | 1991-12-31 |
| 5001767 | Image processing device | Hitoshi Yoneda, Hironobu Machida, Koji Izawa | 1991-03-19 |
| 4998122 | Image binarization apparatus | Hitoshi Yoneda, Hironobu Machida | 1991-03-05 |