Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6479029 | Micronized alkaline earth metal carbonate | Karl Koehler, Jai-Won Park, Hans Gabel | 2002-11-12 |
| 5366513 | Preparation of granulated alkaline earth metal carbonate | Dieter Goldmann, Ludwig Pfeifer, Karl Koehler, Peter Wallbrecht | 1994-11-22 |