Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5057546 | Semi-flexible or flexible phenolic foam composition | — | 1991-10-15 |
| 4417004 | Phenol formaldehyde foams | Antoine Berchem | 1983-11-22 |
| 4324747 | Pulp waste liquor-phenolic resin binder | Antoine Berchem | 1982-04-13 |
| 4219623 | Phenol formaldehyde resin foams | Antoine Berchem | 1980-08-26 |