Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091582 | Process for the preparation of aromatic polyamines | Gerhard Grogler, Dieter Dieterich | 1992-02-25 |
| 5066824 | Novel process for the preparation of amine-terminated compounds | Robson Mafoti | 1991-11-19 |
| 4964875 | Process for after-treatment of dyed polyamide textile materials with polyurethane containing quaternary ammonium groups | Udo-Winfried Hendricks, Ergun Tamer | 1990-10-23 |
| 4914238 | Process for the production of diisocyanates, selected diisocyantes produced thereby and the production of polyurethane plastics therefrom | — | 1990-04-03 |
| 4870206 | Aromatic polyisocyanates, their preparation and use as components for adhesives | Rudolf Hombach, Helmut Reiff, Dieter Dieterich, Manfred Dollhausen | 1989-09-26 |
| 4820866 | Process for the production of diisocyanates, selected diisocyanates produced thereby and the production of polyurethane plastics therefrom | — | 1989-04-11 |
| 4797427 | Aromatic diamines containing sulfonic acid aryl esters, a process for their production and their use in the production of polyurethane plastics | Helmut Reiff, Gerhard Balle, Dieter Dieterich | 1989-01-10 |