Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618886 | Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymers | Mamoru Kioka | 1997-04-08 |
| 5595827 | Polypropylene resin composition and the use of the same | Masaya Yamada, Michio Toriumi, Mamoru Kioka | 1997-01-21 |