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Patent applications and USPTO patent grants for Gerstung; Stefan.The latest application filed is for "oxidation hair dye compositions containing 3,4,5-triaminopyrazole derivatives and 3,4,5-triaminopyrazole derivatives".
Patent | Date |
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Oxidation hair dye compositions containing 3,4,5-triaminopyrazole derivatives and 3,4,5-triaminopyrazole derivatives Grant 5,766,576 - Lowe , et al. June 16, 1 | 1998-06-16 |
Oxidation hair dye composition based on 4,5-diaminopyrazole and m-phenylenediamine derivatives Grant 5,718,731 - Loewe , et al. February 17, 1 | 1998-02-17 |
Process for the synthesis of 4,5-diaminopyrazole derivatives useful for dyeing hair Grant 5,663,366 - Neunhoeffer , et al. September 2, 1 | 1997-09-02 |
Composition for the oxidative dyeing of hair containing 4,5-diaminopyrazole derivatives as well as new 4,5-diaminopyrazole derivatives and process for their synthesis Grant 5,534,267 - Neunhoeffer , et al. July 9, 1 | 1996-07-09 |
N-phenylaminopyrazole derivatives as well as composition and process for the dyeing of hair Grant 5,430,159 - Neunhoeffer , et al. July 4, 1 | 1995-07-04 |
Hair dye containing aminopyrazole derivatives as well as pyrazole derivatives Grant 5,380,340 - Neunhoeffer , et al. January 10, 1 | 1995-01-10 |
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