Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5160406 | Method for producing a formed structural element | Paul H. Gillard | 1992-11-03 |
| 4966799 | Noise-reducing structural element | Paul Rohrer | 1990-10-30 |
| 4637909 | Process for producing double-layered structures | — | 1987-01-20 |