Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5034132 | Method for extraction | Hisashi Miyakawa, Naoki Mizutani, Kazuoki Urabe, Osamu Nittani, Koji Hirano | 1991-07-23 |
| 4842743 | Method of removing solvent from chlorinated resin | Osamu Nittani, Toshinobu Ito, Makoto Kokura, Kouzi Hirano | 1989-06-27 |