Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6717009 | Method for making high-purity naphthalenedicarboxylic acid | Tomoki Uemura, Koji Yamamoto | 2004-04-06 |
| 6706939 | Method for concentrating 2,6-dimethylnaphthalene | Noboru Nakao, Koji Yamamoto | 2004-03-16 |