Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4916215 | Water-soluble disazo compounds containing substituted triazinyl radical, pyrazole-type groups, and a plurality of fiber-reactive sulfone-containing groups, suitable as dyestuffs | Ernst Hoyer | 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, Ernst Hoyer | 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, Ernst Hoyer, Joachim W. Otten, deceased, by Ursula Otten, heir, by Anna G. Rudolph nee Otten, heir | 1986-11-11 |
| 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, Fritz Meininger | 1984-11-27 |
| 4378312 | Water-soluble azo dyestuffs | Ernst Hoyer, Fritz Meininger | 1983-03-29 |
| 4323497 | Water-soluble disazo dyestuffs | Ernst Hoyer, Fritz Meininger | 1982-04-06 |