Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5095135 | Process for the preparation of high-purity naphthalenecarboxylic acid esters | Teruaki Yamada, Kazuhiko Maeda, Yukio Nagao, Kazuki Sugiura | 1992-03-10 |
| 4960914 | Method for the preparation of naphthoquinone | — | 1990-10-02 |
| 4437974 | Coal liquefaction process | Shozo Okamura, Yoshihiko Sunami, Takuji Hosoi, Takuo Kanou | 1984-03-20 |