Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4298515 | Process for the preparation of polymers containing hydantoin groups | Ludwig Rottmaier, Rudolf Merten, Wilfried Zecher, Willi Dunwald, Bernhard Schulte | 1981-11-03 |
| 4293669 | Heat-resistant cross-linked polymers and the use thereof as binders | Ludwig Rottmaier, Rudolf Merten, Wilfried Zecher, Willi Dunwald | 1981-10-06 |
| 4289868 | Polyhydantoins from unsaturated carboxylic acids and polyiso(thio)cyanates | Rudolf Merten, Wilfried Zecher, Willi Dunwald | 1981-09-15 |
| 4281095 | Coating compositions obtained by reacting amino carboxylic acids derivatives with polyisocyanates and compounds containing carboxylic groups to produce polymers containing hydantoin rings and amide groups | Willi Dunwald, Rudolf Merten, Ludwig Rottmaier, Bernhard Schulte, Karl-Heinrich Meyer | 1981-07-28 |
| 4269750 | Process for the preparation of polymers containing hydantoin groups | Ludwig Rottmaier, Rudolf Merten, Wilfried Zecher, Willi Dunwald, Bernhard Schulte | 1981-05-26 |
| 4246393 | Process for the preparation of poly(thio)hydantoins | Wilfried Zecher, Rudolf Merten, Willi Dunwald | 1981-01-20 |
| 4212982 | Polyisocyanates with at least one hydantoin or thiohydantoin ring substituted by carboxylic acid amide groups | Rudolf Merten, Wilfried Zecher, Willi Dunwald | 1980-07-15 |