Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6417344 | Acetylated pyroxylin, and its production process | Kazuhiro Nishioka | 2002-07-09 |
| 6417345 | Method for producing acetylated pyroxylin | Noboru Kamei, Hideo Yabune | 2002-07-09 |