Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5240967 | Method for improving the expandability of styrenic polymer particles | Fred Sonnenberg, Dennis M. Hajnik | 1993-08-31 |
| 4867835 | Waterstop splicing method and apparatus | — | 1989-09-19 |
| 4269871 | Antilumping expandable styrene polymers | Elizabeth A. Blommers, Alvin R. Ingram | 1981-05-26 |