Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646238 | Preparation process of polyhydroxycarboxylic acid | Kan Ikeda, Masahiro Ohta | 1997-07-08 |
| 5616783 | Purification process of polyhydroxycarboxylic acid | Yasunori Yoshida, Katsuji Watanabe, Masahiro Ohta | 1997-04-01 |