Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4490149 | Modification of polyester products | Kouichi Saitou, Shunroku Tohyama | 1984-12-25 |
| 4369036 | Method of modifying synthetic or natural polyamide products | Koichi Saito, Tatsuku Kojima | 1983-01-18 |