Issued Patents All Time
Showing 76–100 of 151 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5352774 | Dyes containing thiophene radicals | Guenter Hansen, Ernst Schefczik, Helmut Reichelt, Hermann Loeffler | 1994-10-04 |
| 5350873 | Optically active phenoxypropionic esters | Volker Bach, Wolfgang Brox, Axel Paul, Karl Siemensmeyer | 1994-09-27 |
| 5332520 | Liquid-crystalline polymers of virtually uniform molecular weight | Volker Bach, Karl Siemensmeyer | 1994-07-26 |
| 5312926 | Indonaphthol dyes and thermal transfer thereof | Volker Bach, Ruediger Sens | 1994-05-17 |
| 5310942 | Pyridone dyes and thermal transfer thereof | Volker Bach, Ruediger Sens | 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 | Ruediger Sens, Thomas Werner | 1994-04-12 |
| 5283326 | Dyes containing thiophene radicals | Guenter Hansen, Ernst Schefczik, Helmut Reichelt, Hermann Loeffler | 1994-02-01 |
| 5281572 | Bichromorphic methine and azamethine dyes and process for transferring them | Volker Bach, Ruediger Sens | 1994-01-25 |
| 5270456 | Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series | Erwin Hahn, Guenter Hansen, Helmut Reichelt, Ernst Schefczik, Sabine Greuttner +1 more | 1993-12-14 |
| 5264507 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Ruediger Sens, Heike Kilburg | 1993-11-23 |
| 5260446 | Aminothiazoles | Matthias Wiesenfeldt, Sabine Gruettner, Helmut Reichelt | 1993-11-09 |
| 5256624 | Transfer of methine dyes | Ruediger Sens | 1993-10-26 |
| 5231140 | Preparation of polymers with side groups with NLO activity, and the use thereof | Heike Kilburg, Karin H. Beck, Peter Strohriegl, Harry Mueller, Oskar Nuyken | 1993-07-27 |
| 5225548 | Indophenol dyes and thermal transfer thereof | Volker Bach, Ruediger Sens | 1993-07-06 |
| 5221658 | Transfer of indoaniline dyes | Volker Bach, Ruediger Sens | 1993-06-22 |
| 5218120 | Quinolinemethine dyes | Ruediger Sens | 1993-06-08 |
| 5216139 | Thiopheneazo dye based on a coupling component of the thiazole series | Guenter Hansen, Gunther Lamm, Helmut Reichelt | 1993-06-01 |
| 5214140 | Bichromophoric methine and azamethine dyes and process for transferring them | Volker Bach, Ruediger Sens | 1993-05-25 |
| 5212027 | Monomers and their use for the production of a laser-optical recording element which can be repeatedly erased and recorded on | Gerhard Wagenblast, Wolfgang Brox, Axel Paul, Volker Bach | 1993-05-18 |
| 5208210 | Thermal transfer printing | Ruediger Sens | 1993-05-04 |
| 5206375 | Thiophene derivatives | Ernst Schefczik, Heinz Eilingsfeld | 1993-04-27 |
| 5206376 | Preparation of 2-amino-5-formyl-4-halothiazoles | Matthias Wiesenfeldt | 1993-04-27 |
| 5204312 | Azo dyes for thermal transfer printing | Ruediger Sens, Gunther Lamm | 1993-04-20 |
| 5200386 | Azo dyes for thermotransfer printing | Ruediger Sens, Helmut Reichelt, Sabine Gruettner, Gunther Lamm | 1993-04-06 |