Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5006129 | Dyeing textile material with pigment dyes: pre-treatment with quaternary ally ammonium salt polymer | Thomas Martini, Karl-Heinz Keil, Ulrich Karsunky | 1991-04-09 |
| 4988365 | Process for the dyeing and printing of cellulose fibers in the absence of alkali or reducing agents: pre treatment with modified amine | Karl-Heinz Keil | 1991-01-29 |
| 4810254 | Wet-fastness properties of sulphur dyestuffs dyeings on cellulose treated with poly-di-allyl-ammonium salt | Wolfgang Bauer, Karl-Heinz Keil, Gert Nagl, Manfred Kaiser, Joachim Steinbach | 1989-03-07 |
| 4806126 | Process for alkali-free dyeing and printing with reactive dyes | Karl-Heinz Keil, Dieter Gevert, Oscar Navarrete | 1989-02-21 |
| 4753999 | Copolymer, process for its preparation, and its use | Karl-Heinz Keil, Fritz Engelhardt, Gunter Rosch | 1988-06-28 |
| 4588413 | Process for producing dyeings with reactive dyestuffs | Karl-Heinz Keil, Fritz Engelhardt, Ulrich Greiner, Manfred Pelster | 1986-05-13 |
| 4300903 | Padding auxiliaries and processes for dyeing cellulose fibers or mixtures of cellulose fibers and synthetic fibers with sulphur dyestuffs, sulphur vat dyestuffs, vat dyestuffs and reactive dyestuffs | Friedrich Engelhardt, Karl-Heinz Keil, Gerhard Weckler | 1981-11-17 |