Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5875262 | Method of and apparatus for converting image signal representing image having gradation | — | 1999-02-23 |
| 5680477 | Method of and apparatus for converting image signal representing image having gradation | — | 1997-10-21 |
| 5117293 | Method of and apparatus for generating conversion curve employable for converting reproduction characteristic of image | Yasuharu Yonezawa | 1992-05-26 |
| 5018008 | Method of and appartus for setting color separation | — | 1991-05-21 |
| 4972256 | Method of enhancing image sharpness for image reproduction using sharp/unsharp signal processing | Makoto Hirosawa, Takashi Sakamoto | 1990-11-20 |
| 4951132 | Color scanner having monitoring apparatus capable of displaying a plurality of originals in parallel | Toshiaki Nakade, Kazuya Akiyama, Yasuharu Yonezawa | 1990-08-21 |
| 4561800 | Method of heating a road surface and apparatus therefor | Toshiki Hatakenaka, Tetsuo Akiyama, Kunio Shinohara | 1985-12-31 |