Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310827 | Polyamide copolymers | Masao Ishida, Koji Hirai, Setuo Yamashita, Shinji Komori, Takuji Okaya | 1994-05-10 |
| 5310852 | Elastic polyurethane fiber | Koji Hirai, Michihiro Ishiguro, Tatuya Oshita, Setuo Yamashita, Katsura Maeda | 1994-05-10 |
| 5290905 | Polyurethane, elastic polyurethane fiber and polyesterpolycarbonatediol used for the same | Setuo Yamashita, Koji Hirai | 1994-03-01 |