Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867927 | Process of producing thermplastic resin sheet and the like and molding screw therefor | Akira Funaki | 1989-09-19 |
| 4863653 | Process of producing thermoplastic resin sheet and equipment therefor | Atsushi Fujii | 1989-09-05 |