Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877844 | Process for producing a low gloss thermoplastic resin | Yutaka Toyooka, Yoshiyuki Mikami | 1989-10-31 |
| 4804706 | Process for the preparation of maleimide copolymers and thermoplastic resin composition using the same | Yutaka Toyooka, Atsushi Kimura | 1989-02-14 |