Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833203 | Polycarbonate composition | Hideki Endo, Kohji Kato | 1989-05-23 |
| 4833217 | Polycarbonate resin composition | Keishiro Igi, Takayuki Okamura, Shunro Taniguchi, Masao Ishii, Yoshifumi Murata +3 more | 1989-05-23 |