Inventor · Frechen, DE

Ralph Nemitz

23Patents
4h-index
23Co-inventors
63Inventor score

Filing activity: Sep 30, 1999 → Nov 29, 2018

Most-cited inventions

PatentTitleAreaCited byStatus
US6313354A Method for producing aromatic aldehydes Chemistry; Metallurgy 9 Expired
US8328879B2 Phthalimides as bleach activators Human Necessities 7 Active
US8323356B2 Sulfonimines as bleaching activators Human Necessities 6 Active
US8034122B2 Bleaching agent comprising 2-acylpyridinium derivatives Human Necessities 4 Active
US7981166B2 Bleaching agent having cationic acyl pyridinium derivatives, co-bleaching activators and hydrogen peroxide Human Necessities 3 Active
US6376457B1 Phenoketals and the use thereof as odoriferous substances Chemistry; Metallurgy 2 Expired
US7799096B2 Agent for dyeing keratin-containing fibers Chemistry; Metallurgy 1 Active
US9259380B2 Means for dyeing and/or matting keratinic fibres containing novel 1,4 diaminoanthraquinone dyes Chemistry; Metallurgy 1 Active
US8821592B1 Oxidation dye precursors Chemistry; Metallurgy 1 Active
US8668745B2 Brightening agent comprising acylpyridinium compounds and defined alkalizing agents Human Necessities 1 Active
US10617618B2 Agent for oxidative dyeing of hair containing anisole derivatives Human Necessities 0 Active
US8277516B2 Lightening agent having cationic acylpyridinium derivatives and certain ammonium compounds Human Necessities 0 Active
US8864848B2 Zwitterionic azo dyestuffs for coloring keratin-including fibres Human Necessities 0 Active
US8597371B2 Lightening agent comprising acyl pyridinium compounds and cationic polysaccharides Human Necessities 0 Active
US7211119B2 Coupling components Textiles; Paper 0 Expired
US10561594B2 Agent for stabilizing keratin fibers with 5-ring heterocycles Human Necessities 0 Active
US6933270B2 3,3-Dimethylcyclohexane derivatives Chemistry; Metallurgy 0 Expired
US8277517B2 Lightening agent having cationic acylpyridinium derivatives and certain amino acids Human Necessities 0 Active
US8349023B2 After treatment for color fixation Human Necessities 0 Active
US8021438B2 Cationic acylpyridinium derivatives for use as bleach activators Human Necessities 0 Active
US7135047B2 M-phenylenediamine derivatives as coupler components for the coloring of keratinic fibers Chemistry; Metallurgy 0 Expired
US8864849B1 Anionic azo dyestuffs for coloring keratin-containing fibers Human Necessities 0 Active
US6632787B1 Carbonyl compounds, methods of making the same, and their use as fragrances and fragrance-enhancing additives Chemistry; Metallurgy 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.