Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691398 | Polylactic acid composition | Yuji Tokushige | 1997-11-25 |
| 5612437 | Polymerization apparatus and method of producing vinyl chloride type polymer by using the same | Takuya Ueda, Kikuo Nakajima, Tadashi Amano, Shuji Ohnishi | 1997-03-18 |