Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7927039 | Method for improving vermiculite's intake of ammonium ions, absorption material, its uses and method of removing ammonium from environment | Vesa Tokopainen, Alexey Shebanov, Nina Åkerback, Sten Engblom | 2011-04-19 |