Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5349373 | Thermal head drive unit | Haruo Yamashita, Yoshihiro Mushika, Hideshi Ishihara | 1994-09-20 |
| 5315381 | Color image forming apparatus | Haruo Yamashita, Hideshi Ishihara | 1994-05-24 |
| 5296920 | Color gradation correction method and apparatus | Shigeo Sakaue, Susumu Maruno, Haruo Yamashita, Hideshi Ishihara | 1994-03-22 |