Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790930 | Process for producing polyimide resin | Takeshi Kikuchi, Hiroyuki Tsuji, Koji Okada, Hiroyuki Furutani, Koichiro Tanaka +1 more | 2004-09-14 |
| 6689899 | Diamine and acid anhydride | Kohji Okada | 2004-02-10 |