Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6545067 | Additives for mineral building materials containing cement | Karl-Heinz Buchner, Michael Ehle, Johannes Perner, Knut Oppenlander, Wolfgang H. H. Gunther +1 more | 2003-04-08 |