Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620932 | 2-alkoxy-5-methoxypyrimidines or their tautomeric forms and methods for producing the same | Thomas Güthner | 2003-09-16 |
| 4956503 | Process for the preparation of N-cyanoethanimidic acid esters | Stefan Weiss, Helmut Krommer | 1990-09-11 |
| 4714602 | Process for the preparation of solid sodium hydrogen cyanamide | Helmut Krommer, Stefan Weiss | 1987-12-22 |