Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6500400 | Process for preparing precipitated calcium carbonates | Andreas Kinnen, Helmut Dillenburg, Kurt Schinninger | 2002-12-31 |
| 6342100 | Bimolecular coated calcium carbonate and process of production thereof | Helmut Dillenburg | 2002-01-29 |