Inventor

NEEFF RUETGER

30 patents

Patents

30 patents

US4225489ASep 30, 1980

Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties

BAYER AG53 citations92

US4585574AApr 29, 1986

Anthraquinone dyestuffs, processes for their preparation, their use, and liquid-crystalline materials containing anthraquinone dyestuffs

BAYER AG20 citations76

US4709019ANov 24, 1987

Process for the preparation of dimethyl succinylosuccinate, the disodium salt thereof, dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and dianilinoterephthalic acids, and the dimethyl esters and salts thereof

BAYER AG7 citations73

US4689171AAug 25, 1987

Anthraquinone dyestuffs, their preparation and use and dichroic material containing these anthraquinone dyestuffs

BAYER AG17 citations72

US4596666AJun 24, 1986

Aryl-mercapto anthraquinone dyestuffs, their preparation and use and dichroic material containing aryl-mercapto anthraquinone dyestuffs

BAYER AG15 citations72

US4294769AOct 13, 1981

Process for the preparation of 1,4-diamino-2,3-dicyano-anthraquinones

BAYER AG11 citations70

US4721745AJan 26, 1988

Pigments based on metal complexes

BAYER AG6 citations63

US4628093ADec 9, 1986

Red nickel azine pigment

BAYER AG4 citations63

US4614547ASep 30, 1986

Azine pigments

BAYER AG3 citations63

US4309221AJan 5, 1982

Anthraquinone derivatives

BAYER AG2 citations63

US4288362ASep 8, 1981

Monoazo pigments containing a quinazo linonylacetoacetanilide coupling component

BAYER AG5 citations63

US4285874AAug 25, 1981

1-Isocyanato-anthraquinones

BAYER AG3 citations63

US4564680AJan 14, 1986

Isoindolazines

BAYER AG6 citations62

US4556401ADec 3, 1985

Process for dyeing amide-containing fibre materials

BAYER AG6 citations62

US4422973ADec 27, 1983

Process for the preparation of 1,4-diamino-2,3-dicyano-anthraquinone

BAYER AG4 citations62

US4344827AAug 17, 1982

Process for working up nitric acid

BAYER AG5 citations62

US4278434AJul 14, 1981

Transfer printing process and printing inks and temporary supports for carrying out this process

BAYER AG4 citations62

US4389215AJun 21, 1983

Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances

BAYER AG0 citations52

US4334068AJun 8, 1982

Process for the preparation of triazinylamino-anthraquinones

BAYER AG0 citations52

US4323671AApr 6, 1982

Anthraquinone derivatives, processes for their preparation, processes for pigmenting organic macromolecular substances, and pigmented organic macromolecular material

BAYER AG1 citations52

US4319025AMar 9, 1982

Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances

BAYER AG1 citations52

US4294578AOct 13, 1981

Colorants

BAYER AG0 citations51

US4264511AApr 28, 1981

Anthraquinone compounds

BAYER AG0 citations51

US4290768ASep 22, 1981

Process for dyeing and printing cellulose fibres

BAYER AG1 citations49

US4323670AApr 6, 1982

Anthraquinone-azomethine compounds, processes for their preparation and processes for pigmenting organic macromolecular substances

BAYER AG0 citations42

NEEFF RUETGER

Patents

Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties

Anthraquinone dyestuffs, processes for their preparation, their use, and liquid-crystalline materials containing anthraquinone dyestuffs

Anthraquinone-azo pyridone-containing compounds

Anthraquinone derivatives for pigmenting organic macromolecular substances

Azo dye pigments containing 4-quinazolinone moieties

Anthraquinone dyestuffs

Azine pigments, processes for their preparation, and their use

Process for the preparation of dimethyl succinylosuccinate, the disodium salt thereof, dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and dianilinoterephthalic acids, and the dimethyl esters and salts thereof

Anthraquinone dyestuffs, their preparation and use and dichroic material containing these anthraquinone dyestuffs

Aryl-mercapto anthraquinone dyestuffs, their preparation and use and dichroic material containing aryl-mercapto anthraquinone dyestuffs

Process for the preparation of 1,4-diamino-2,3-dicyano-anthraquinones

Pigments based on metal complexes

Red nickel azine pigment

Azine pigments

Anthraquinone derivatives

Monoazo pigments containing a quinazo linonylacetoacetanilide coupling component

1-Isocyanato-anthraquinones

Isoindolazines

Process for dyeing amide-containing fibre materials

Process for the preparation of 1,4-diamino-2,3-dicyano-anthraquinone

Process for working up nitric acid

Transfer printing process and printing inks and temporary supports for carrying out this process

Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances

Process for the preparation of triazinylamino-anthraquinones

Anthraquinone derivatives, processes for their preparation, processes for pigmenting organic macromolecular substances, and pigmented organic macromolecular material

Anthraquinone-azomethine compounds, processes for their preparation and processes for dyeing synthetic fibre materials and for pigmenting organic macromolecular substances

Colorants

Anthraquinone compounds

Process for dyeing and printing cellulose fibres

Anthraquinone-azomethine compounds, processes for their preparation and processes for pigmenting organic macromolecular substances