Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5409686 | Process for producing yellow copper (I) oxide with narrow particle size range | Hermann Winkler, Michael Stelter, Klaus P. Hugk | 1995-04-25 |
| 4251489 | Process for producing a copper sulfate solution | Elmar Kniprath, Hermann Priebe, Claus Reppenhagen | 1981-02-17 |