Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4730027 | Method of making styrene-type polymer comprising suspension polymerization conducted in aqueous medium containing combination of polyvinyl alcohol and sulfonated polystyrene or sulfonated styrene-maleic anhydride copolymer | Stephen V. Slovenkai | 1988-03-08 |
| 4286069 | Method of making expandable styrene-type beads | Stelvio Papetti | 1981-08-25 |