Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 | Fritz Meininger | 1990-07-03 |
| 4916215 | Water-soluble disazo compounds containing substituted triazinyl radical, pyrazole-type groups, and a plurality of fiber-reactive sulfone-containing groups, suitable as dyestuffs | Rudolf Fass | 1990-04-10 |
| 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 | Fritz Meininger, Rudolf Fass | 1988-03-08 |
| 4622390 | Water-soluble disazo compounds containing an amino naphthol-disulfonic acid moiety as a coupling component and fibre-reactive groups | Fritz Meininger, Joachim W. Otten, deceased, by Ursula Otten, heir, by Anna G. Rudolph nee Otten, heir, Rudolf Fass | 1986-11-11 |
| 4492654 | Water-soluble azo compounds, a process for their preparation and their use as dyes | Folker Kohlhaas, Fritz Meininger | 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 | Fritz Meininger, Rudolf Fass | 1984-11-27 |
| 4378312 | Water-soluble azo dyestuffs | Fritz Meininger, Rudolf Fass | 1983-03-29 |
| 4370145 | Copper formazan compounds, processes for their preparation and their use as dyestuffs | Gunther Schwaiger | 1983-01-25 |
| 4336190 | Copper complex formazan compounds, process for their manufacture and their use as dyestuffs | Gunther Schwaiger | 1982-06-22 |
| 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, Fritz Meininger | 1982-06-08 |
| 4323497 | Water-soluble disazo dyestuffs | Fritz Meininger, Rudolf Fass | 1982-04-06 |
| 4315865 | Process for the production of sulfuric acid semiester compounds by sulfation in a machine employing kneading action | Hans H. Steuernagel, Dieter Wagner | 1982-02-16 |
| 4296913 | Ball valve | — | 1981-10-27 |
| 4293306 | Process for the dyeing and printing of hydrophobic synthetic organic fiber materials with water-insoluble azo dyestuffs | Willi Steckelberg, Walter Deucker, Rudolf Schickfluss | 1981-10-06 |
| 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, Fritz Meininger | 1980-12-30 |
| 4191703 | Process for the manufacture of sulfuric acid semi-ester compounds | Hans H. Steuernagel | 1980-03-04 |