Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890121 | Halftone image printing device | Shuzo Hirahara, Kazuhiko Higuchi, Kiyoshi Yamada, Tadayoshi Ohno, Tsutomu Kanai | 1989-12-26 |
| 4884080 | Color image printing apparatus | Shuzo Hirahara, Kazuhiko Higuchi, Kiyoshi Yamada, Tadayoshi Ohno, Tsutomu Kanai +1 more | 1989-11-28 |
| 4819008 | Thermal head driver circuit | Shuzo Hirahara, Tadayoshi Ohno | 1989-04-04 |