Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845193 | Process for producing polycarbonate resin molding material having low particle content with vented extruder | Toshikazu Umemura, Kenji Maeda, Yutaka Kojima, Kou Tanabe | 1989-07-04 |