Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451417 | Method of producing extruded plate-like polystyrene foam | Hiroyuki Akiyama, Nobuyoshi Shimoyashiki, Yoshiaki Momose, Fusao Imai | 1984-05-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451417 | Method of producing extruded plate-like polystyrene foam | Hiroyuki Akiyama, Nobuyoshi Shimoyashiki, Yoshiaki Momose, Fusao Imai | 1984-05-29 |