Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5015732 | Water soluble copper-complex phenylazonaphthyl and naphthylazonaphthyl compounds containing as fibre-reactive groups a chloro-triazinyl group and a group of the vinylsulfone series, suitable as dyestuffs | — | 1991-05-14 |
| 4939243 | Water-soluble copper complex disazo compounds containg a chloro triazinylamino group and a group of the vinylsulfone series as fiber-reactive groups and their dyestuffs | Ernst Hoyer | 1990-07-03 |
| 4906738 | Water-soluble phenyl- or naphthyl-azo-carboxypyrazolone compounds, containing a fiber-reactive group with a chloratriazinyl moiety and a group of the vinylsulfone series in the pyrazolone coupling component, suitable as dyestuffs | Folker Kohlhaas, Hans H. Steuernagel | 1990-03-06 |
| 4769446 | Fiber-reactive red azo dyestuff | Anthony J. Corso, Thomas S. Phillips | 1988-09-06 |
| 4760134 | Process for the preparation of the copper complex disazo compounds from disazo compounds containing an O'-alkoxyaniline group by coppering dimethylation at a pH at about 3-6 | Anthony J. Corso, Hans H. Steuernagel | 1988-07-26 |
| 4730038 | Water-soluble disazo compounds of 1-amino-8-naphthal-3,6- or 4,6-disulfonic acid as bivalent coupling component, containing fiber-reactive groups suitable as dyestuffs | Ernst Hoyer, Rudolf Fass | 1988-03-08 |
| 4725675 | Water-soluble phenyl-azo-naphthyl compounds, suitable as dyestuffs, containing a chloro-triazinylamino group and a fiber-reactive group of the vinylsulfone type | Joachim W. Otten, deceased | 1988-02-16 |
| 4707545 | Process for the preparation of lithium salts of anionic dyes by reacting the calcium salts with lithium sulfate or lithium hydrogen sulfate | Ludwig Schlafer | 1987-11-17 |
| 4693726 | Process for dyeing or printing cellulose fibers or cellulose blend fibers with pyridinium-triazine reactive dye, axable without alkali | Peter Mischke, Gerd Konig, Hartmut Springer | 1987-09-15 |
| 4649193 | Water-soluble dyestuffs containing fibre-reactive groups of the vinylsulfone series and the fluoro-s-triazinyl-amino series | Joachim W. Otten, deceased, by Ursula Otten, heir, by Anna G. Rudolph nee Otten, heir | 1987-03-10 |
| 4622390 | Water-soluble disazo compounds containing an amino naphthol-disulfonic acid moiety as a coupling component and fibre-reactive groups | Ernst Hoyer, Joachim W. Otten, deceased, by Ursula Otten, heir, by Anna G. Rudolph nee Otten, heir, Rudolf Fass | 1986-11-11 |
| 4515598 | Process for dyeing and printing fiber materials containing hydroxy and/or carbonamide groups with reactive dye containing both vinyl sulphonyl and fluoro-triazinyl groups | Joachim W. Otten, deceased, by Ursula Otten, heir, by Anna G. Rudolph nee Otten, heir | 1985-05-07 |
| 4492654 | Water-soluble azo compounds, a process for their preparation and their use as dyes | Ernst Hoyer, Folker Kohlhaas | 1985-01-08 |
| 4485041 | Water-soluble metal free or copper triazino-bis-[hydroxy-naphthylamino]-disazo dyestuffs containing fiber reactive groups, and a process for dyeing or printing cellulose fibers | Ernst Hoyer, Rudolf Fass | 1984-11-27 |
| 4442288 | Anthraquinone compounds | Joachim W. Otten, deceased, by Ursla Otten, heir, by Anna G. Rudolph, heir | 1984-04-10 |
| 4430259 | Water-soluble disazo compounds suitable as fiber-reactive dyestuffs | Peter Mischke, Hermann Fuchs | 1984-02-07 |
| 4378312 | Water-soluble azo dyestuffs | Ernst Hoyer, Rudolf Fass | 1983-03-29 |
| 4372892 | Process for the preparation of 1-aminobenzene-5-.beta.-sulfatoethylsulfone-2,4-disulfonic acid, the 5-vinylsulfone compound and the alkali salts thereof | Hermann Fuchs, Gustav Kapaun | 1983-02-08 |
| 4334076 | Process for the preparation of sulfuric acid semiester ethylsulfonyl compounds of aminophenols, aminobenzanilides or phenylpyrazolones by esterification with sulfuric acid and/or sulfur trioxide in a kneader | Hans H. Steuernagel, Ernst Hoyer | 1982-06-08 |
| 4323497 | Water-soluble disazo dyestuffs | Ernst Hoyer, Rudolf Fass | 1982-04-06 |
| 4242258 | Water-soluble dyestuffs, processes for their manufacture, their use as fiber-reactive dyestuffs for dyeing and printing fiber materials and the fiber materials dyed with these dyestuffs | Walter Noll, Ernst Hoyer | 1980-12-30 |
| 4229171 | Process for the preparation of fiber-reactive dyestuffs | — | 1980-10-21 |
| 4224024 | Process for the reactive dyeing and printing of fibrous materials containing hydroxy groups with a water-soluble organic dyestuff containing at least one phosphonic acid-monofluoride group and at least one ionic water-solubilizing group | Helmut Gies | 1980-09-23 |
| 4185012 | Water-soluble, fibre-reactive copper complex disazo dyestuffs | Hartmut Springer | 1980-01-22 |