Inventor

BACK GERHARD

41 patents

⚠️ This page may combine multiple inventors who share the name “BACK GERHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BACK GERHARD

CIBA GEIGY CORP

Process for photochemical stabilization of non-dyed and dyed polyamide fibre material and mixtures thereof

Process for the photochemical stabilization of synthetic polyamide fibre materials with water-soluble copper complex dye

Process for photochemical stabilization of polyamide and polyurethane fiber materials with metal complex compounds

Azo compounds having a 3-sulphomethyl-pyrazolone-(5) coupler component

Unsymmetrical azo - azo methine 1:2 chromium complex dyes

Unsymmetrical phenyl azo naphthyl chromium complex dyes

Sulfo- or carboxy-aryl amino sulfonyl phenyl azo hydroxpyridine heavy metal complex dyes

Asymmetrical polyazo chromium complex dyes comprising resorcinol as a coupling component

Process for improving the light-fastness of leather dyeings

Metal dye complexes containing an azo or azomethine dye and a colorless ligand with the C═N--N═C group

Bis-1:2-chromium complexes of disazo dyes, and their preparation and use

Arylazoarylazo-substituted azo, azomethine 1:2 chromium complex dyes

Process for dyeing natural protein fibres with metallic azo dyes

Unsymmetrical mono sulfo containing 1:2 azo, azo chromium complex dyes

Chromium complex disazo dyes

Unsymmetrical phenyl azo naphthyl chromium complex dyes

8-hydroxyquinoline sulfonic acid-azo chromium complexes

Fibre-reactive 1:1 chromium complex azo or azomethine dyes having a bidentate chelating group and a monofunctional neutral ligand

Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes in presence of alkali metal fluordsilicate or amindnlum silicate

Fibre-reactive chromium complexes and their preparation and use

Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes or mixtures of dyes with fluoride, fluorosilicate or fluoroborate

Metal dye complexes containing an azo or azomethine dye and a colorless ligand with the C═N--N═C group

Process for dyeing natural or synthetic polyamide fibre materials with 1:1 metal complex dyes and fluoride, fluorosilicate or fluoroborate

Unsymmetrical mono-sulfo containing chromium complexes of azo dyes

Sulfo-substituted fibre-reactive 1:2-chromium complex azo dyes

Preparation of 1:2 chromium complexes one sulfo substituted and one sulfonamido or the like substituted azo dyes

1:2-metal complex dyes containing one atom of chromium or cobalt and two azo dyes each formed by coupling two diazo compounds to resorcinol

Phenyl- or naphthyl-azo-(8-hydroxyquinoline) 1:2-cobalt complex dyes for leather

Process for dyeing wool and blends thereof with other fibres using reactive dyes and colorless fiber-reactive dyeing assistant

Fiber-reactive chromium complexes and their preparation and use for polyamide, leather and cotton

1:2 Cobalt and chromium complex unsymmetrical azo dyes

Fibre-reactive chromium complex dyes, process for their manufacture and use thereof to dye cellulose or wool

Asymmetric 1:2-chromium complex dyes containing two azo dyes, one containing an acetoacetanilide coupling component

CIBA GEIGY AG

Chromium complex dye, including azo and azo methine dye compounds

Process for the manufacture of chromium complexes from metallizable azo or azo methine dyes

Transfer printing process for hydrophilic fibrous material

Heavy metal complexes of azo dyestuffs containing a heterocyclic diazo component and the residue of 5-halogeno-2,3-dihydrozypyridine as coupling component

Heavy metal complexes of azo compounds containing a halogeno-2,3-dihydroxy pyridine coupling component

Azo compounds

Process for the manufacture of metal complex dyes

SCHUETZ HANS U

Fibre-reaction 1:1 chromium complex azo or azomethine dyes having a bidentate chelating group and a monofunctional neutral ligand