Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Tetsuya Nagase +1 more | 1997-04-01 |
| 5503904 | Invisible information recorded medium | Kazuo Yoshinaga, Hiroshi Tanioka, Shinobu Arimoto, Toshio Hayashi, Takehiko Nakai +2 more | 1996-04-02 |
| 5481334 | Image processing apparatus having means for detecting non-visible light, and image processing method therefor | Shinobu Arimoto, Katsuichi Shimizu, Yutaka Komiya, Kazuo Yoshinaga, Toshio Hayashi +3 more | 1996-01-02 |
| 5471281 | Image reading apparatus and copying apparatus having means for radiating visible and non-visible light, image processing apparatus having means for discriminating a specific orginal and image processing method therefor | Toshio Hayashi, Shinobu Arimoto, Kazuo Yoshinaga, Takehiko Nakai, Tetsuya Nagase +1 more | 1995-11-28 |