Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703172 | Propylene block copolymer and process for producing the same | Kazuyuki Watanabe, Shimako Matsumoto | 1997-12-30 |
| 5684099 | Propylene block copolymer, process for producing the same, and resin composition comprising the same | Kazuyuki Watanabe, Ryuji Sakaguchi | 1997-11-04 |