Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323570 | Substituted aminopyrimidines | Wolfgang Stenzel, Wolfgang Fleck, Erich Cohnen | 1982-04-06 |
| 4318915 | Substituted guandines and methods of preparation thereof | Erich Cohnen, Eva Hofferber | 1982-03-09 |