Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5797238 | Method of producing concrete structures with a surface protection and a concrete structure produced in accordance with the method | Leif Berntsson | 1998-08-25 |
| 4895598 | Stabilization of extremely lightweight aggregate concrete | Leif Berntsson | 1990-01-23 |