Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4525420 | Polyurethane elastic yarns and their production | Norio Okumura | 1985-06-25 |
| 4451417 | Method of producing extruded plate-like polystyrene foam | Hiroyuki Akiyama, Hidewo Hatakeyama, Nobuyoshi Shimoyashiki, Yoshiaki Momose | 1984-05-29 |
| 4393016 | Process for producing plate-like polystyrene resin foam | Hiroyuki Akiyama, Hideo Hatakeyama, Nobuyoshi Shimoyashiki, Yoshiaki Momose | 1983-07-12 |
| 4255371 | Process for producing olefinic resin foams | Nobuyoshi Shimoyashiki, Teruo Masukawa | 1981-03-10 |