Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877540 | Methylolated and optionally etherified urethanes containing fluoroalkyl ligands | Fritz Engelhardt, Manfred Muller, Norbert Munch, Hans Wagener | 1989-10-31 |
| 4775488 | Aqueous anionic dispersion | Heinrich Bathelt, Frank Wehowsky, Hans Wagener, Manfred Seidel, Manfred Muller +1 more | 1988-10-04 |
| 4736014 | Water-soluble polycoesters, process for their preparation, and their use | Friedrich Engelhardt, Rolf Kleber, Peter Klein | 1988-04-05 |
| 4709074 | Urethanes containing perfluoroalkyl and epichlorohydrin groups | Heinrich Bathelt, Winfried Ehrl, Frank Wehowsky, Rolf Kleber, Werner Lotz +5 more | 1987-11-24 |
| 4535031 | Modified aminoplast, its preparation and its use | Peter Dorries, Thomas Gotze, Steffen Piesch, Manfred Schon, Gunther Wulff | 1985-08-13 |
| 4463165 | Water-dispersible polyester, its preparation, and its use as a hydrophiling agent | Friedrich Engelhardt, Otto Smerz, Hans Wagener | 1984-07-31 |
| 4314052 | Polyester which is soluble or dispersible in water, a process for its preparation and its use as a levelling auxiliary, levelling auxiliaries and processes for uniform dyeing | Friedrich Engelhardt, Joachim Ribka, Walter Dursch, Walter Rupp | 1982-02-02 |
| 4304569 | Formulation for brightening synthetic fibers and its preparation and use | Friedrich Engelhardt, Herbert Friedrich, Thomas Martini | 1981-12-08 |
| 4252532 | Process for dyeing evenly synthetic fibrous materials | Friedrich Engelhardt, Joachim Ribka, Ralf Zimmermann | 1981-02-24 |
| 4250296 | Levelling agent and process for the even dyeing of materials made of synthetic fibers | Gerhard Weckler, Hans J. Hauss, Friedrich Engelhardt | 1981-02-10 |
| 4247456 | Water-insoluble monoazo pyridone dye | Hanswilli von Brachel, Ernst Heinrich, Otto Grawinger, Horst Kindler | 1981-01-27 |