Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888388 | Polycarbonate resin composition | Masafumi Hongo, Naoki Yamamoto, Akira Yanagase | 1989-12-19 |
| 4877831 | Polycarbonate resin composition | Masafumi Hongo, Naoki Yamamoto, Akira Yanagase | 1989-10-31 |