Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5912279 | Polymer foams containing blocking agents | Howard S. Hammel | 1999-06-15 |
| 5204169 | Polystyrene foams containing 1,1-defluoroethane | — | 1993-04-20 |
| 5147896 | Foam blowing agent composition and process for producing foams | — | 1992-09-15 |
| 5134171 | Degradable foam materials | Howard S. Hammel | 1992-07-28 |