Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804613 | Optical recording medium and optical recording process using such medium | Hiroshi Matsuda, Masahiro Haruta, Hirohide Munakata, Yoshinori Tomita | 1989-02-14 |
| 4802989 | System for purifying dye | Masahiro Haruta, Kunitaka Ozawa | 1989-02-07 |
| 4798694 | Method for producing composite materials | Hiroyuki Sugata, Kouhei Nakata, Nobutoshi Mizusawa, Satoshi Yuasa, Masahiro Haruta +1 more | 1989-01-17 |