Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888388 | Polycarbonate resin composition | Masafumi Hongo, Hideyuki Shigemitsu, Naoki Yamamoto | 1989-12-19 |
| 4877687 | Synthetic resin molded article having antistatic property | Kiyotaka Azegami, Suehiro Tayama, Naoki Yamamoto, Hiroki Hatakeyama | 1989-10-31 |
| 4877831 | Polycarbonate resin composition | Masafumi Hongo, Hideyuki Shigemitsu, Naoki Yamamoto | 1989-10-31 |
| 4859727 | Antistatic thermoplastic resin composition | Isao Sasaki, Naoki Yamamoto, Hiroki Hatakeyama | 1989-08-22 |