Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8236189 | Method for etching copper and recovery of the spent etching solution | — | 2012-08-07 |
| 4350667 | Extraction of copper from an ammoniacal copper solution | Sven Andersson, Hans Reinhardt | 1982-09-21 |
| 4252621 | Process of regenerating an ammoniacal etching solution | Hans Reinhardt | 1981-02-24 |
| 4226791 | Method and a reagent mixture for removing metal ions from an aqueous solution by means of liquid-liquid extraction | Hans Reinhardt | 1980-10-07 |