Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296151 | Process for the precipitation of phosphate with iron hydroxide | Siegfried Riethmayer | 1994-03-22 |
| 5009793 | Process for the separation of heavy metals from waste materials | — | 1991-04-23 |