Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880896 | Polycarbonate for disc substrate having low bisphenol content | Kazunari Otsubo, Hideo Ago, Koji Yamamoto | 1989-11-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880896 | Polycarbonate for disc substrate having low bisphenol content | Kazunari Otsubo, Hideo Ago, Koji Yamamoto | 1989-11-14 |