Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5523473 | Method of producing naphthalenedicarboxylic acids and diaryldicarboxylic acids | Koichi Hirota, Ren Hasebe, Norimasa Okuda, Ikuyo Katsumi | 1996-06-04 |
| 5144066 | Method of producing naphthalenedicarboxylic acids and diaryldicarboxylic acids | Koichi Hirota, Ren Hasebe, Norimasa Okuda, Ikuyo Katsumi | 1992-09-01 |