Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5436306 | Methine or azamethine dye polymers | Karl-Heinz Etzbach, Heike Kilburg | 1995-07-25 |
| 5434231 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Karl-Heinz Etzbach, Heike Kilburg | 1995-07-18 |
| 5421834 | Cyan mixtures for dye transfer | Karl-Heinz Etzbach, Thomas Werner | 1995-06-06 |
| 5401612 | Polyesters containing nonlinear-optical chromophores, and the use thereof | Karl-Heinz Etzbach, Stefan Beckmann | 1995-03-28 |
| RE34877 | Azo dyes for thermotransfer printing | Volker Bach, Karl-Heinz Etzbach, Sabine Gruettner, Gunther Lamm, Helmut Reichelt | 1995-03-14 |
| 5389596 | Dye mixtures for dye transfer | Karl-Heinz Etzbach, Gunther Lamm | 1995-02-14 |
| 5384402 | Bichromophoric cyano-containing methine dyes and transfer thereof | Volker Bach, Karl-Heinz Etzbach | 1995-01-24 |
| 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, Karl-Heinz Etzbach, Helmut Reichelt, Sabine Gruettner-Merten | 1994-12-27 |
| 5371266 | Bichromophoric cyano-containing methine dyes and transfer thereof | Volker Bach, Karl-Heinz Etzbach | 1994-12-06 |
| 5364919 | Methine or azamethine dye polymers | Karl-Heinz Etzbach, Heike Killburg | 1994-11-15 |
| 5312926 | Indonaphthol dyes and thermal transfer thereof | Volker Bach, Karl-Heinz Etzbach | 1994-05-17 |
| 5310942 | Pyridone dyes and thermal transfer thereof | Volker Bach, Karl-Heinz Etzbach | 1994-05-10 |
| 5306815 | Azo dyes with a coupling component of the quinoline series | Erwin Hahn, Clemens Grund, Andreas Geisberger, Helmut Reichelt, Andreas Guldner +3 more | 1994-04-26 |
| 5302577 | Transfer of anthraquinone dyes | Thomas Werner, Karl-Heinz Etzbach | 1994-04-12 |
| 5281572 | Bichromorphic methine and azamethine dyes and process for transferring them | Volker Bach, Karl-Heinz Etzbach | 1994-01-25 |
| 5264507 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Karl-Heinz Etzbach, Heike Kilburg | 1993-11-23 |
| 5256624 | Transfer of methine dyes | Karl-Heinz Etzbach | 1993-10-26 |
| 5225548 | Indophenol dyes and thermal transfer thereof | Volker Bach, Karl-Heinz Etzbach | 1993-07-06 |
| 5221658 | Transfer of indoaniline dyes | Volker Bach, Karl-Heinz Etzbach | 1993-06-22 |
| 5218120 | Quinolinemethine dyes | Karl-Heinz Etzbach | 1993-06-08 |
| 5214140 | Bichromophoric methine and azamethine dyes and process for transferring them | Volker Bach, Karl-Heinz Etzbach | 1993-05-25 |
| 5208210 | Thermal transfer printing | Karl-Heinz Etzbach | 1993-05-04 |
| 5204312 | Azo dyes for thermal transfer printing | Gunther Lamm, Karl-Heinz Etzbach | 1993-04-20 |
| 5200386 | Azo dyes for thermotransfer printing | Helmut Reichelt, Sabine Gruettner, Karl-Heinz Etzbach, Gunther Lamm | 1993-04-06 |
| 5162045 | Transferring dyes for thermal printing | Bernhard Albert, Karl-Heinz Etzbach | 1992-11-10 |