Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4508536 | Solid dye mixtures for dyeing polyacrylonitrile navy blue to black | Arnulf Ruediger Lapple | 1985-04-02 |
| 4465491 | Solid dye preparation of water soluble dyes with aliphatic aminocarboxylic acid | Paolo Balliello, Ernst Tempel | 1984-08-14 |
| 4452608 | Process for the preparation of metal complex dye formulations using membrane separation | — | 1984-06-05 |
| 4281999 | Aqueous dye preparations of dyes difficultly soluble in water | Carl Becker, Georges Mahler | 1981-08-04 |