Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330364 | Process of strengthening dilute phosphoric acid | Karl-Heinz Dorr, Hans-Joachim Konig, Ulrich Sander | 1982-05-18 |
| 4276116 | Process of strengthening dilute phosphoric acid | Karl-Heinz Dorr, Hans-Joachim Konig, Ulrich Sander | 1981-06-30 |