Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889671 | Production method of prefoamed particles of polyolefin resin | Susumu Izawa, Hideki Kuwabara, Toru Yamaguchi | 1989-12-26 |
| 4806293 | Method of producing a foamed, molded article | Yoshimi Sudo, Masahiko Kishida, Mitsuru Nishida | 1989-02-21 |