Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5824117 | Nitrobenzisothiazole azo dyestuff | Ulrich Buhler, Hubert Kruse | 1998-10-20 |
| 5492995 | Polycondensates containing phosphinic or phosphonic acid groups and siloxane groups | Fritz Engelhardt, Karl-Heinz Keil, Wilfried Schuler, Willi Steckelberg, Ralf Zerrer +1 more | 1996-02-20 |
| 5488123 | Polycondensates containing polysiloxane groups | Fritz Engelhardt, Wilfried Schuler, Ralf Zerrer, Werner Antwerpen | 1996-01-30 |
| 5174791 | Process for dyeing and printing blend fabrics of polyester and natural fibre materials with disperse dye and polyether-polyester to inhibit soilins with disperse dye | Ulrich Buhler, Klaus Hofmann, Hubert Kruse, Willi Steckelberg | 1992-12-29 |
| 5041496 | Hydrophilic, swellable graft copolymers, their preparation and use | Friedrich Engelhardt, Ulrich Riegel | 1991-08-20 |
| 4661626 | Process for the production of 2-isocyanato-2,3-dehydrocarboxylic acid esters | Franz Effenberger, Karlheinz Drauz | 1987-04-28 |