Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5994420 | Foam and process for producing a carbon dioxide blowing agent | Henry G. Schirmer, Thomas A. Hessen | 1999-11-30 |
| 5670552 | Foam and process for producing foam using a carbon dioxide blowing agent | Henry G. Schirmer, Thomas A. Hessen | 1997-09-23 |
| 5330596 | Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam scrap | Thomas A. Hessen, Thomas R. Hardy, Henry G. Schirmer, Susan R. Flye | 1994-07-19 |
| 5118561 | Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam scrap | Thomas A. Hessen, Thomas R. Hardy, Susan R. Flye, Henry G. Schirmer | 1992-06-02 |