Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887095 | Image recording apparatus using several types of energy and recording process | Yukio Sato, Yoshihiro Ishida, Tadashi Yamamoto | 1989-12-12 |
| 4887151 | Encoding apparatus for color image data with block-by-block individual quantizing or individual encoding of luminosity, structure, and color information | — | 1989-12-12 |
| 4821065 | Recording apparatus having controllable recording beam states | Hiroaki Ishii, Yukio Sato, Yutaka Udagawa | 1989-04-11 |