Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879412 | Purification process of methacrylic acid | Kozo Iwasaki, Morimasa Kuragano, Minoru Koshibe, Katsuji Yoguchi, Yoshio Koyama | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879412 | Purification process of methacrylic acid | Kozo Iwasaki, Morimasa Kuragano, Minoru Koshibe, Katsuji Yoguchi, Yoshio Koyama | 1989-11-07 |