Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5547477 | Dye mixtures with pyridoneazo dyes | Arno Lange, Helmut Degen, Gunther Lamm, Helmut Reichelt | 1996-08-20 |
| 5076808 | Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer | Erwin Hahn, Alexander Aumueller, Wolfgang Reuther, Reinhold Krallmann | 1991-12-31 |
| 4911732 | Light fastness of polyester dyeings using benzophenone ether esters, and novel benzophenone ether esters | Peter Neumann, Reinhold Krallmann | 1990-03-27 |
| 4789382 | Benzophenone ether esters and use thereof to improve the light fastness of polyester dyeings | Peter Neumann, Reinhold Krallmann | 1988-12-06 |
| 4707161 | Lightfastness of dyeings obtained with acid dyes or metal complex dyes on polyamides: treatment with copper hydroxamates | Michael Thomas, Peter Neumann, Reinhold Krallmann | 1987-11-17 |
| 4613334 | Lightfastness of dyeings obtained with acid dyes or metal complex dyes on polyamides | Michael Thomas, Peter Neumann, Reinhold Krallmann | 1986-09-23 |
| 4294576 | Removal of oligomer deposits from textile materials | Herbert Helfert, Friedrich Reinert, Paul Anthony Richter, Michele Vescia | 1981-10-13 |