Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4528221 | Polystyrene foamed sheet suitable for forming | Masahiro Tsubone, Bon Machida | 1985-07-09 |
| 4426065 | Continuous process for the production of polystyrene foamed articles | Masahiro Tsubone, Bon Machida | 1984-01-17 |