Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670580 | Propylene block copolymer, process for preparing same, and modified copolymer using propylene block copolymer | Shuji Machida | 1997-09-23 |
| 5608009 | Olefin copolymer and process for preparing same | Shuji Machida, Haruo Shikuma, Tomio Tatsumi, Shinichi Kurokawa | 1997-03-04 |