Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879076 | Process for the production of polyethylene materials | Seizo Kobayashi, Kazuo Matsuura, Shigeki Yokoyama, Takeshi Kamiya | 1989-11-07 |
| 4849390 | Catalysts for polymerization of olefins | Kunimichi Kubo, Kazuo Matsuura | 1989-07-18 |