Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5158928 | Azo dyes for thermotransfer printing | Volker Bach, Karl-Heinz Etzbach, Sabine Gruettner, Gunther Lamm, Helmut Reichelt | 1992-10-27 |
| 5155089 | Anthraquinone dyes for thermal transfer printing | Karl-Heinz Etzbach | 1992-10-13 |
| 5151506 | Phenoneazo dyes | Volker Bach, Guenter Hansen, Gunther Lamm | 1992-09-29 |
| 5147845 | Triazolopyridine dyes and thermal transfer of methine dyes | Ernst Schefczik, Karl-Heinz Etzbach, Gunther Lamm, Helmut Reichelt, Matthias Wiesenfeldt | 1992-09-15 |
| 5145828 | Transfer of azo dyes | Karl-Heinz Etzbach, Matthias Wiesenfeldt | 1992-09-08 |
| 5139997 | Transfer of bichromophoric cyano-containing methine dyes | Volker Bach, Karl-Heinz Etzbach | 1992-08-18 |
| 5132438 | Bichromophoric methine and azamethine dyes and process for transferring them | Volker Bach, Karl-Heinz Etzbach | 1992-07-21 |
| 5101035 | Merocyanine-like thiazole dyes and thermal transfer thereof | Volker Bach, Karl-Heinz Etzbach, Gunther Lamm, Klaus Unterforsthuber, Rosemarie Rausch-Krebs | 1992-03-31 |
| 5093308 | Oxadiazolyl-benzene azo hydroxy-pyridone dyes for thermal transfer printing a yellow print | Gunther Lamm, Karl-Heinz Etzbach | 1992-03-03 |
| 5037798 | Transfer of AZO dyes | Karl-Heinz Etzbach, Gunther Lamm, Helmut Reichelt | 1991-08-06 |
| 4999026 | Transferring dyes for thermal printing: tri-cyano-vinyl aniline dyes | Bernhard Albert, Karl-Heinz Etzbach | 1991-03-12 |
| 4940692 | Transfer of dyes | Volker Bach, Karl-Heinz Etzbach, Manfred Ruske | 1990-07-10 |
| 4939118 | Transfer of azo dyes having a pyridine coupling component | Karl-Heinz Etzbach, Gunther Lamm, Hermann Loeffler, Helmut Reichelt | 1990-07-03 |
| 4880769 | Transfer of catinic dyes in their deprotonated, electrically neutral form | Johannes P. Dix, Karl-Heinz Etzbach, Udo Mayer | 1989-11-14 |
| 4760049 | Dye transfer | Karl-Heinz Etzbach | 1988-07-26 |