Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843113 | Aromatic polysulfone resin composition having excellent plating characteristics | Yoshiharu Tatsukami, Kuniaki Asai, Kazuo Hieda | 1989-06-27 |
| 4813623 | Dispersing and grinding apparatus having removable mounting structure | — | 1989-03-21 |