Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873366 | Process for producing 2,6-naphthalenedicarboxylic acid | Toshiharu Matsuda, Atsushi Sasakawa, Shoichiro Hayashi | 1989-10-10 |
| 4825007 | Oxidation process of aromatic compounds | Kazuo Yoshida, Masatoshi Hino | 1989-04-25 |
| 4814521 | Process for producing 2,6-dihydroxynaphthalene and 2,6-diacetoxynaphthalene | Takayuki Tanonaka, Takashi Yamauchi, Hiroyuki Enari | 1989-03-21 |
| 4804788 | Preparation process of 4,4-dihydroxybiphenyl | Tadashi Nakamura, Takayuki Tanonaka, Kazuo Yoshida, Yoshihisa Machida | 1989-02-14 |