Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6022407 | Concrete mixture which yields concrete having high strength at varying density, method for producing the mixture and the concrete, and use of an anionic additive | Kjell Stridh, Ingemar Johansson, Kjell Svedman | 2000-02-08 |