Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780106 | Use of metal-free azo _compounds having at least one _6-hydroxypyrid-2-one _coupling component radical and metal _complexes thereof for dyeing _substrates and substrates dyed therewith | Helmut Moser, Manfred Greve, Reinhard Pedrazzi | 1988-10-25 |
| 4695413 | Protective circuit for a hacker type DC converter | Folke Ekelund, Per Lilja, Matts F. Stahl | 1987-09-22 |
| 4673735 | Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor | Helmut Moser, Manfred Greve, Reinhard Pedrazzi | 1987-06-16 |
| 4665165 | Phthalocyanine basic dyestuffs | — | 1987-05-12 |
| 4405524 | Anthraquinone dyes and method of use | — | 1983-09-20 |
| 4376077 | Sulpho group-containing anthraquinone dyestuffs | Wolfgang Schoenauer | 1983-03-08 |
| 4330294 | Anthraquinone compounds and process for dyeing therewith | — | 1982-05-18 |
| 4273720 | 2-Aralkoxy-anthraquinone dyestuffs | — | 1981-06-16 |