Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693683 | Expandable styrene resin beads and process for producing the same | Masayuki Tanaka, Yonezo Ueda, Takanori Suzuki | 1997-12-02 |
| 5616413 | Expandable styrene resin beads and suspension-polymerization process for producing the same | Masayuki Tanaka, Yonezo Ueda | 1997-04-01 |