Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7041354 | Optical data carrier comprising a cyanine dye as light-absorbent compound in the information layer | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +5 more | 2006-05-09 |
| 6936325 | Optical recording medium | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +11 more | 2005-08-30 |
| 6896945 | Optical data carrier comprising a phthalocyanine dye as light-absorbent compound in the information layer | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +4 more | 2005-05-24 |
| 6884899 | Preparation of 1-amino-4-hydroxyanthraquinones | Christoph Thiebes | 2005-04-26 |
| 6852873 | Preparation of styryl dyes | Stephan Michaelis, Christoph Thiebes | 2005-02-08 |
| 6846335 | Crystal form of a perinone dye | Stephan Michaelis | 2005-01-25 |
| 6835725 | Optical data carrier comprising a cyanine dye as light-absorbent compound in the information layer | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +5 more | 2004-12-28 |
| 6833455 | Bridged perinones/quinophthalones | Christoph Thiebes, Ulrich Feldhues | 2004-12-21 |
| 6828455 | Preparation of styryl compounds | Ulrich Feldhues | 2004-12-07 |
| 6737142 | Optical data store comprising an axially substituted cobalt phthalocyanine in the light-writeable information layer | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +5 more | 2004-05-18 |
| 6726972 | Optical data storage medium containing a diaza hemicyanine dye as the light-absorbing compound in the information layer | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +5 more | 2004-04-27 |
| 6713146 | Optical data stores containing a Co-phthalocyanine complex in the information layer recordable using light | Horst Berneth, Thomas Bieringer, Friedrich-Karl Bruder, Rainer Hagen, Karin Hassenruck +2 more | 2004-03-30 |
| 6641889 | Optical data storage medium containing a triazacyanine dye as the light-absorbing compound in the information layer | Horst Berneth, Friedrich-Karl Bruder, Wilfried Haese, Rainer Hagen, Karin Hassenruck +5 more | 2003-11-04 |
| 6465659 | Process for preparing asymmetrical methine dyes | Karl-Heinz Reinhardt, Christoph Thiebes | 2002-10-15 |
| 6420576 | Preparation of arylaminohydroxyanthraquinones | Stephan Michaelis | 2002-07-16 |
| 6251177 | Solid phthalocyanine preparations | — | 2001-06-26 |
| 5356444 | Phthalocyanine reactive dyestuff mixture | Max Schwarz, Joachim Wolff, Dietrich Hildebrand, Joachim Grutze, Manfred Hoppe +1 more | 1994-10-18 |
| 5279622 | Solid dyestuff preparations having improved water solubility | Frank-Michael Stohr, Joachim Wolff | 1994-01-18 |
| 5163971 | Dyestuff mixtures of metal phthalocyanine and pyridone azo reactive dyes | Frank-Michael Stohr, Manfred Groll, Karl-Josef Herd, Karl H. Schundehutte | 1992-11-17 |
| 5070193 | Reactive phthalocyanine dyestuffs | Karl H. Schundehutte, Manfred Groll | 1991-12-03 |
| 5051501 | Reactive phthalocyanine dyestuffs containing a fluorochloropyrimidinyl group | Karl H. Schundehutte, Manfred Groll | 1991-09-24 |
| 4845213 | Process for preparing triphendioxazine compounds | Wolfgang Harms | 1989-07-04 |
| 4520202 | Process for preparing 4,4'-dibenzoylaminodianthrimidecarbazole | — | 1985-05-28 |
| 4452742 | Process for the preparation of 4,4'-diamino-1,1'-dianthrimides | — | 1984-06-05 |
| 4408056 | Anthraquinone vat dyestuffs | Walter Hohmann | 1983-10-04 |