Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861344 | Reactive water-soluble azo dyes containing carboxy- or carbamoyl-pydridinium groups for dyeing textiles | Hartmut Springer, Reinhard Hahnle | 1989-08-29 |
| 4845202 | Water-soluble disazo compounds containing 3-carboxy or 3-carbamoylpyridium-s-triazinyl groups and fiber-reactive groups of the vinyl sulfone series suitable as dyestuffs | Hartmut Springer, Reinhard Hahnle | 1989-07-04 |
| 4818814 | Water-soluble disazo compounds containing the 1-amino-8-hydroxy-3,6-disulfo-naphthalene moiety as a bivalent coupling component and an aniline or naphthylamine compound having a fiber-reactive group, and a 2-sulfo-5-acylamino-aniline | — | 1989-04-04 |
| 4808193 | Process for dyeing hydroxy-containing fiber material with water-soluble dis-azo reactive dye compound | Hartmut Springer, Michael Kunze | 1989-02-28 |
| 4806127 | Water-soluble disazo compounds, containing triazinyl pyridinium group processes for their preparation and their use for dyeing cellulose | Hartmut Springer, Reinhard Hahnle | 1989-02-21 |