Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5376150 | Use of pyridine dyes in the textile sector, dye mixtures with pyridine dyes, and triazolopyridine dyes having a thienyl radical | Arno Lange, Volker Bach, Ruediger Sens, Karl-Heinz Etzbach, Helmut Reichelt | 1994-12-27 |
| 5298610 | Thiazoleazo dyes having a coupling component of the diphenylamine series | Erwin Hahn, Matthias Wiesenfeldt, Helmut Reichelt | 1994-03-29 |