Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4212982 | Polyisocyanates with at least one hydantoin or thiohydantoin ring substituted by carboxylic acid amide groups | Jurgen Lewalter, Rudolf Merten, Willi Dunwald | 1980-07-15 |
| 4196274 | Process for the production of hydantoins and polyhydantoin resins | Rudolf Merten | 1980-04-01 |
| 4187365 | Process for the production of polycondensate containing cyclic imide groups | Werner Clarenz, Willi Dunwald, Rudolf Merten | 1980-02-05 |
| 4182812 | Process for the preparation of hydantoin lacquers | Rudolf Merten | 1980-01-08 |