Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814521 | Process for producing 2,6-dihydroxynaphthalene and 2,6-diacetoxynaphthalene | Takashi Yamauchi, Hiroyuki Enari, Yutaka Konai | 1989-03-21 |
| 4804788 | Preparation process of 4,4-dihydroxybiphenyl | Yutaka Konai, Tadashi Nakamura, Kazuo Yoshida, Yoshihisa Machida | 1989-02-14 |