Inventor

BUXBAUM GUNTER

DE37 patents

Patents

37 patents

US5421878AJun 6, 1995

Pure-colored iron oxide direct red pigments, a process for their production and their use

BAYER AG31 citations92

US5368640ANov 29, 1994

Transparent iron oxide pigments, processes for their production and their use

BAYER AG20 citations92

US4753680AJun 28, 1988

Process for the preparation of bright, color-pure iron oxide red pigments

BAYER AG36 citations92

US3931025AJan 6, 1976

Magnetic iron oxides with improved orientability and a process for their production

BAYER AG45 citations92

US5164007ANov 17, 1992

Ferromagnetic metal pigment essentially consisting of iron and a process for its production

BAYER AG21 citations81

US4966641AOct 30, 1990

Color intensive iron oxide black pigments obtained by the nitrobenzene reduction process and a process for its preparation

BAYER AG19 citations79

US4264462AApr 28, 1981

Stabilization of magnetite pigments with heterocyclic nitrogen compounds

BAYER AG9 citations74

US5667579ASep 16, 1997

Thermally stable iron oxide pigments, a process for their preparation and their use

BAYER AG7 citations73

US5269841ADec 14, 1993

Temperature-resistant black pigment, a process for its production and its use

BAYER AG15 citations73

US5215584AJun 1, 1993

Process for coloring building materials

BAYER AG17 citations73

US5154769AOct 13, 1992

Process for production of black manganese/iron oxide pigment

BAYER AG13 citations73

US5055136AOct 8, 1991

Heat-stable iron oxide black pigments, processes for their production and their use

BAYER AG14 citations73

US4631090ADec 23, 1986

Preparation and use of iron magnetic pigments

BAYER AG7 citations73

US4369265AJan 18, 1983

Readily dispersible silicone-coated finely divided solids

BAYER AG7 citations73

US4323596AApr 6, 1982

Coating iron oxide particles for magnetic recording

BAYER AG11 citations73

US4014710AMar 29, 1977

Magnetic pigments with improved orientability and a process for their production

BAYER AG10 citations73

US4470844ASep 11, 1984

Agglomerated ferromagnetic iron particles

BAYER AG14 citations72

US4140539AFeb 20, 1979

Hydrothermal process for producing dense iron oxide pigments

BAYER AG10 citations72

US5049193ASep 17, 1991

Heat stable iron oxide pigments of upsilon-Fe2 O3 structure, a process for their production and their use

BAYER AG7 citations71

US5032180AJul 16, 1991

Process for the production of iron oxide yellow pigments

BAYER AG8 citations71

US4297395AOct 27, 1981

Production of cobalt-doped ferrimagnetic iron oxides

BAYER AG18 citations71

US4990189AFeb 5, 1991

Iron oxide pigments, a process for their preparation and their use

BAYER AG13 citations70

US4689086AAug 25, 1987

Stabilized magnetic pigments

BAYER AG14 citations70

US5202043AApr 13, 1993

Process for the preparation of isometric magnetic iron oxide

BAYER AG6 citations62

US5002751AMar 26, 1991

Highly-coercive isometric iron oxides, a process for the production and the use thereof

BAYER AG4 citations62

US5269843ADec 14, 1993

Boron-containing iron oxide pigments and a process for their preparation

BAYER AG3 citations61

US5076848ADec 31, 1991

Process for the preparation of iron yellow pigments

BAYER AG4 citations61

US4686142AAug 11, 1987

Process for the production of iron oxides epitaxially coated with cobalt the coated oxides and their cue

BAYER AG3 citations61

US5300146AApr 5, 1994

Thermostable iron oxide pigments, processes for their production, as well as their use

BAYER AG6 citations60

US4773938ASep 27, 1988

Finely divided isometric hexaferrite pigments with a W-structure, processes for their preparation and their use

BAYER AG6 citations60

US5416050AMay 16, 1995

Red ceramic moulded bodies as well as processes for their production

BAYER AG3 citations57

US5028269AJul 2, 1991

Co-containing magnetic pigments, processes for the production thereof and the use thereof

BAYER AG1 citations51

BUXBAUM GUNTER

Patents

Pure-colored iron oxide direct red pigments, a process for their production and their use

Transparent iron oxide pigments, processes for their production and their use

Process for the preparation of bright, color-pure iron oxide red pigments

Magnetic iron oxides with improved orientability and a process for their production

Black pigment, process for its preparation and its use

Continuous production of iron oxide hydroxide

Black manganese/iron oxide pigment a process for its production and its use

Synthetic pigment having the color of natural uncalcined umber and its use

Coating iron oxide particles for magnetic recording

Ferromagnetic metal pigment essentially consisting of iron and a process for its production

Color intensive iron oxide black pigments obtained by the nitrobenzene reduction process and a process for its preparation

Stabilization of magnetite pigments with heterocyclic nitrogen compounds

Thermally stable iron oxide pigments, a process for their preparation and their use

Temperature-resistant black pigment, a process for its production and its use

Process for coloring building materials

Process for production of black manganese/iron oxide pigment

Heat-stable iron oxide black pigments, processes for their production and their use

Preparation and use of iron magnetic pigments

Readily dispersible silicone-coated finely divided solids

Coating iron oxide particles for magnetic recording

Magnetic pigments with improved orientability and a process for their production

Agglomerated ferromagnetic iron particles

Hydrothermal process for producing dense iron oxide pigments

Heat stable iron oxide pigments of upsilon-Fe2 O3 structure, a process for their production and their use

Process for the production of iron oxide yellow pigments

Production of cobalt-doped ferrimagnetic iron oxides

Iron oxide pigments, a process for their preparation and their use

Stabilized magnetic pigments

Process for the preparation of isometric magnetic iron oxide

Highly-coercive isometric iron oxides, a process for the production and the use thereof

Boron-containing iron oxide pigments and a process for their preparation

Process for the preparation of iron yellow pigments

Process for the production of iron oxides epitaxially coated with cobalt the coated oxides and their cue

Thermostable iron oxide pigments, processes for their production, as well as their use

Finely divided isometric hexaferrite pigments with a W-structure, processes for their preparation and their use

Red ceramic moulded bodies as well as processes for their production

Co-containing magnetic pigments, processes for the production thereof and the use thereof