Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4970338 | Preparation process of biphenyl-4,4'-dicarboxylic acid | Toshiharu Matsuda, Tadashi Nakamura, Shoichiro Hayashi, Yutaka Konai | 1990-11-13 |
| 4873366 | Process for producing 2,6-naphthalenedicarboxylic acid | Toshiharu Matsuda, Shoichiro Hayashi, Yutaka Konai | 1989-10-10 |
| 4794195 | Process for producing 2,6-naphthalenedicarboxylic acid by oxidizing 2,6-diisopropylnaphthalene | Shoichiro Hayashi, Toshiharu Matsuda, Yutaka Konai | 1988-12-27 |
| 4754060 | Process for producing naphthalenedicarboxylic acid together with trimellitic acid | Shoichiro Hayashi, Toshiharu Matsuda | 1988-06-28 |
| 4681978 | Process for producing 2,6-naphthalenedicarboxylic acid | Takashi Yamauchi, Shoichiro Hayashi | 1987-07-21 |