Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6565643 | Process for preparing synthetic clay minerals | Jan Nieman | 2003-05-20 |
| 6537442 | Cogel containing oxidic compounds of tetravalent, trivalent, and divalent metallic elements | Jan Nieman | 2003-03-25 |