Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6120704 | Mixtures of optical brighteners | Helmut Neunzerling | 2000-09-19 |
| 5904739 | Storage-stable liquid brightener formulations | Petra Rothe | 1999-05-18 |
| 5654500 | Method for determining cyclic service life for rotational parts of a rotary machine | William Lee Herron | 1997-08-05 |
| 5389280 | Stable and homogeneous aqueous formulations of surfactants | Karl-Heinz Keil, Ignaz Wimmer | 1995-02-14 |
| 5230711 | Dyeing of cellulose with soluble sulphur dyes without reducing agent | Karl-Heinz Keil | 1993-07-27 |
| 5131913 | Production of pattern effects when dyeing or printing textile material in the absence of alkali or reducing agents: cationization and oxidized in a pattern before dyeing | — | 1992-07-21 |
| 5006129 | Dyeing textile material with pigment dyes: pre-treatment with quaternary ally ammonium salt polymer | Karl-Heinz Keil, Ulrich Karsunky, Klaus Sternberger | 1991-04-09 |
| 4814453 | Naphthalimides containing sulfuric acid ester groups, a process for their preparation and their use | Erich Schinzel | 1989-03-21 |
| 4791205 | Bisbenzoxazolylnaphthalenes containing sulfonate or sulfonamide groups, a process for their preparation and their use | Erich Schinzel, Hans Frischkorn | 1988-12-13 |
| 4595756 | Cationic compounds of the naphthalimide series, process for their preparation and their use | Norbert Schonberger, Erich Schinzel, Gunter Rosch | 1986-06-17 |
| 4508900 | Cationic compounds of the naphthalimide series, process for their preparation and their use | Norbert Schonberger, Erich Schinzel, Gunter Rosch | 1985-04-02 |
| 4447350 | Mixtures of optical brighteners and their use | Erich Schinzel, Hans Frischkorn, Herbert Friedrich, Heinz Probst | 1984-05-08 |
| 4416795 | Mixtures of optical brighteners | Hans Frischkorn, Erich Schinzel, Heinz Probst | 1983-11-22 |
| 4400294 | Mixtures of optical brighteners | Gunter Rosch | 1983-08-23 |
| 4336155 | Mixtures of optical brighteners | Rudiger Erckel, Horst Fruhbeis, Gunter Rosch, Heinz Probst | 1982-06-22 |
| 4330427 | Mixtures of optical brighteners | Rudiger Erckel, Horst Fruhbeis, Gunter Rosch, Heinz Probst | 1982-05-18 |
| 4323675 | Novel stilbene compounds: process for their manufacture and their use as optical brighteners | Helmut Eckes, Rudiger Erckel, Gunter Rosch | 1982-04-06 |
| 4321052 | Use of alkylpolyglycol-tert.-butyl ether as bleaching auxiliary and bleaching baths containing this agent | Otto Smerz, Siegfried Billenstein, Klaus Adrian | 1982-03-23 |
| 4309551 | Quaternized, bridged benzimidazolylbenzimidazoles, processes for their preparation and their use | Norbert Schonberger, Erich Schinzel, Gunter Rosch | 1982-01-05 |
| 4304569 | Formulation for brightening synthetic fibers and its preparation and use | Friedrich Engelhardt, Karl Hintermeier, Herbert Friedrich | 1981-12-08 |
| 4271036 | Colorless formulations of optical brighteners from the series of bis-triazinylamino-stilbene-disulfonic acid compounds | Klaus-Martin Uhl, Hans Frischkorn | 1981-06-02 |
| 4263176 | Color-stable brighteners for detergents | Helmut Mengler, Gunter Rosch, Gunter Hohlfeld | 1981-04-21 |
| 4246403 | 1,3,4-Oxadiazolone-(2) compounds and process for their manufacture | Gunter Prossel, Erich Schinzel, Norbert Schonberger, Gunter Rosch | 1981-01-20 |