Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6272248 | Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system | Takashi Saitoh, Hiroshi Takahashi, Yoshio Kaneko, Shigeo Kurotaka, Toshiya Hikita +11 more | 2001-08-07 |
| 5751854 | Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system | Takashi Saitoh, Hiroshi Takahashi, Yoshio Kaneko, Shigeo Kurotaka, Toshiya Hikita +11 more | 1998-05-12 |
| 5642199 | Copier having a security function | Takeshi Ukai | 1997-06-24 |
| 5602939 | Specific document discriminating apparatus and image reading apparatus using it therein | Takeshi Ukai | 1997-02-11 |
| 5444518 | Image forming apparatus which adds identification information to recorded images to prevent forgery | Michiyoshi Tachikawa, Takeshi Ukai, Yoshio Kaneko, Hiroshi Takahashi, Takashi Saitoh +5 more | 1995-08-22 |