Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5286759 | Foaming system for rigid urethane and isocyanurate foams | Henri J. M. Grunbauer, Johan A. Thoen, Werner A. Lidy | 1994-02-15 |
| 5281632 | Cellular polymer containing perforated cell windows and a process for the preparation thereof | Johan A. Thoen | 1994-01-25 |