Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4355144 | Process for producing a propylene-ethylene copolymer having improved stretchability | Akinobu Shiga, Kiyoshi Matsuyama, Yukio Naito, Seiichiro Ima, Katsuyoshi Yamashita | 1982-10-19 |
| 4337326 | Process for producing propylene-ethylene block copolymers | Akinobu Shiga, Hajime Sadatoshi, Kazuki Wakamatsu, Hiroshi Yoshioka | 1982-06-29 |