Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366123 | Anchor agitator for gaseous phase polymerization vessel | Nobuhiko Kaneshige, Ryoichi Yamamoto | 1982-12-28 |
| 4338424 | Multi-step gas-phase polymerization of olefins | Yoshinori Morita, Ryoichi Yamamoto | 1982-07-06 |