Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4436840 | Process for producing pre-foamed particles of polyolefin resin | Sumio Shimada, Kuninori Hirosawa, Hideki Kuwabara | 1984-03-13 |
| 4399087 | Process for producing foamed polyolefin articles from aged pre-foamed particles of polyolefin resins | Susumu Izawa, Kuninori Hirosawa, Hideharu Inada | 1983-08-16 |
| 4393016 | Process for producing plate-like polystyrene resin foam | Hideo Hatakeyama, Nobuyoshi Shimoyashiki, Yoshiaki Momose, Fusao Imai | 1983-07-12 |
| 4260572 | Process for producing foamed polystyrene boards | Nobuyoshi Shimoyashiki, Hideo Hatakeyama, Toru Yamamoto | 1981-04-07 |