Issued Patents All Time
Showing 26–50 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6078682 | Image processing apparatus and method, and image reading apparatus | Hiroshi Tanioka, Shinobu Arimoto, Yoshinobu Sato, Kazuo Yoshinaga, Toshio Hayashi +5 more | 2000-06-20 |
| 6057946 | Tonality correction system | Yuichi Ikeda, Tetsuya Atsumi, Tetsuya Nakamura, Tsunao Honbo | 2000-05-02 |
| 6051826 | Photosensor with filter for cutting off the input of invisible information | Shinobu Arimoto, Kazuo Yoshinaga, Toshio Hayashi, Takehiko Nakai, Tsutomu Utagawa +1 more | 2000-04-18 |
| 6034788 | Image forming apparatus and method | Yuichi Ikeda | 2000-03-07 |
| 6016206 | Image processing method and apparatus and image forming method and apparatus using the same | Jun Koide, Yuichi Ikeda | 2000-01-18 |
| 5937087 | Image processing apparatus and method thereof | Tatsuo Takeuchi, Rie Saito, Yuichi Ikeda | 1999-08-10 |
| 5875036 | Image processing apparatus which separates an image signal according to density level | — | 1999-02-23 |
| 5859933 | Image forming apparatus | Yuichi Ikeda | 1999-01-12 |
| 5856876 | Image processing apparatus and method with gradation characteristic adjustment | Kazuhito Ohashi, Masahiro Inoue, Yuichi Ikeda | 1999-01-05 |
| 5763891 | Non-visualized information recording medium and apparatus for detecting the same | Kazuo Yoshinaga, Shinobu Arimoto, Toshio Hayashi, Takehiko Nakai, Tsutomu Utagawa +1 more | 1998-06-09 |
| 5724152 | Image reading apparatus and image processing apparatus for reading optical information of visible and non-visible light | Toshio Hayashi, Hiroshi Tanioka, Shinobu Arimoto, Kazuo Yoshinaga, Takehiko Nakai +2 more | 1998-03-03 |
| 5719681 | Image processing apparatus and method thereof for adding a predetermined pattern to an image | Masaaki Sakurai, Rie Saito | 1998-02-17 |
| 5697012 | Method and apparatus for color image formation with gradation control capability | Koji Amemiya, Tatsuo Takeuchi, Hisashi Fukushima, Haruhiko Moriguchi, Takao Ogata | 1997-12-09 |
| 5696594 | Image forming method and apparatus for counterfeit protection controlling image synthesis in response to forming conditions | Rie Saito, Tetsuya Atsumi | 1997-12-09 |
| 5650863 | Image reading and copying using plural illumination sources having different characteristics | Tsutomu Utagawa, Shinobu Arimoto, Kazuo Yoshinaga, Toshio Hayashi, Takehiko Nakai +1 more | 1997-07-22 |
| 5631723 | Image processing apparatus for determining whether an image contains a particular pattern using invisible light | Shinobu Arimoto, Katsuichi Shimizu, Yutaka Komiya, Kazuo Yoshinaga, Toshio Hayashi +3 more | 1997-05-20 |
| 5617187 | Image reading apparatus, copying apparatus, image processing apparatus, and image processing method | Toshio Hayashi, Shinobu Arimoto, Kazuo Yoshinaga, Takehiko Nakai, Tsutomu Utagawa +1 more | 1997-04-01 |
| 5587778 | Overlaid image forming apparatus | Hisashi Fukushima, Tatsuo Takeuchi, Harumi Sakoh | 1996-12-24 |
| 5583644 | System for correcting image density of an image forming system based on a detection result of a test image | Hisashi Fukushima, Tetsuya Atsumi | 1996-12-10 |
| 5579090 | In an image processing system, an image processing apparatus and method for stabilizing output image quality by controlling image forming parameters | Yuichi Ikeda | 1996-11-26 |
| 5572330 | Image processing apparatus and method | — | 1996-11-05 |
| 5566372 | Image forming apparatus and method having gradation control in a dense area in which gradation characteristics are non-linear | Yuichi Ikeda | 1996-10-15 |
| 5557416 | Image processing apparatus and method thereof for adding a predetermined pattern to an image | Masaaki Sakurai, Rie Saito | 1996-09-17 |
| 5557412 | Image forming method and apparatus for counterfeit protection using image synthesis accounting for forming conditions | Rie Saito, Tetsuya Atsumi | 1996-09-17 |
| 5548378 | Image operating apparatus providing image stabilization control | Takao Ogata, Koji Amemiya, Tatsuo Takeuchi, Takashi Hasegawa, Rie Saito | 1996-08-20 |