Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332560 | Process for the removal of zinc and nickel from copper ammine sulfate solutions | Paul R. Kruesi | 1994-07-26 |
| 5173276 | Method for recovery of copper from copper-containing materials | — | 1992-12-22 |
| 4500498 | Ammonium chloride-ammonium hydroxide strip for the recovery of anhydrous zinc chloride | Paul R. Kruesi | 1985-02-19 |