Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6369240 | Gas-phase oxidization process and process for the preparation of phthalic anhydride | Tadanori Hara | 2002-04-09 |
| 4917742 | Method of making lightweight panels and their core materials | Yasuhiko Watanabe, Yoshinori Kuriyama, Takuji Motegi | 1990-04-17 |