Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889671 | Production method of prefoamed particles of polyolefin resin | Hiroyuki Akiyama, Hideki Kuwabara, Toru Yamaguchi | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889671 | Production method of prefoamed particles of polyolefin resin | Hiroyuki Akiyama, Hideki Kuwabara, Toru Yamaguchi | 1989-12-26 |