Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871704 | Catalyst for olefin polymerization | Tadanao Kohara | 1989-10-03 |
| 4870042 | Catalyst for olefin polymerization | Tadanao Kohara | 1989-09-26 |
| 4849483 | Process for producing a catalyst component for polymerization of olefins | Mamoru Tachikawa, Masato Sakuma, Chihiro Imai, Tokuo Makishima | 1989-07-18 |
| 4801654 | Block copolymer containing block from tetrahydrofuran | Tokuo Makishima, by Nobuko Makishima, legal representative, Chihiro Imai | 1989-01-31 |