Inventor

KOESTER EBERHARD

39 patents

Patents

39 patents

US4201149AMay 6, 1980

Apparatus for spin coating in the production of thin magnetic layers for magnetic discs

BASF AG41 citations92

US4287225ASep 1, 1981

Manufacture of ferromagnetic, acicular metallic iron particles by hydrogen reduction

BASF AG21 citations78

US4472455ASep 18, 1984

Production of magnetic recording media

BASF AG11 citations74

US4567108AJan 28, 1986

Magnetic recording media

BASF AG11 citations73

US4497723AFeb 5, 1985

Preparation of acicular, ferrimagnetic iron oxides

BASF AG10 citations73

US4420330ADec 13, 1983

Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron

BASF AG13 citations73

US4287233ASep 1, 1981

Manufacture of acicular cobalt-containing magnetic iron oxide

BASF AG11 citations73

US4221776ASep 9, 1980

Manufacture of acicular ferrimagnetic iron oxides

BASF AG7 citations73

US4213222AJul 22, 1980

Cleaning apparatus for a web of plastics film having a magnetic coating

BASF AG13 citations73

US4213959AJul 22, 1980

Manufacture of acicular, ferrimagnetic iron oxide

BASF AG11 citations73

US4188302AFeb 12, 1980

Manufacture of acicular cobalt-modified magnetic iron oxide

BASF AG13 citations73

US4178171ADec 11, 1979

Manufacture of acicular ferromagnetic iron particles

BASF AG15 citations73

US4133911AJan 9, 1979

Manufacture of magnetic discs

BASF AG7 citations73

US4073977AFeb 14, 1978

Stabilization of pyrophoric metal powders with alkylene oxide polymers

BASF AG8 citations73

US4071610AJan 31, 1978

Manufacture of gamma-iron(III) oxide

BASF AG11 citations73

US4064292ADec 20, 1977

Manufacture of cobalt-modified γ-iron(III)oxides

BASF AG15 citations73

US4003336AJan 18, 1977

Device for the magnetic orientation of magnetic recording media

BASF AG11 citations73

US3984763AOct 5, 1976

Device for the non-destructive measurement of the remanent flux density of magnetic recording media, especially magnetic discs

BASF AG10 citations73

US3961990AJun 8, 1976

Manufacture of magnetic materials which exhibit exchange anisotropy

BASF AG16 citations73

US4876356AOct 24, 1989

Naphtholactam dyes and optical recording medium containing these days

BASF AG9 citations72

US4414287ANov 8, 1983

Magnetic recording medium and its manufacture

BASF AG7 citations72

US4396886AAug 2, 1983

Document authentication by means of exchange-anisotropic magnetic material

BASF AG13 citations72

US4177317ADec 4, 1979

Stabilization of chromium dioxide magnetic pigments

BASF AG10 citations72

US4011593AMar 8, 1977

Magnetic tape cassette with screening shield

BASF AG8 citations72

US3959032AMay 25, 1976

Magnetic materials with exchange anisotropy and process for their manufacture

BASF AG14 citations71

US4619777AOct 28, 1986

Preparation of a magnetic dispersion

BASF AG7 citations70

US4453683AJun 12, 1984

Magnetic tape cassette arrangements

BASF AG18 citations70

US4656548AApr 7, 1987

Tape cassette containing echo-erasing means

BASF AG7 citations69

US4430362AFeb 7, 1984

Production of magnetic recording media

BASF AG2 citations62

US4423454ADec 27, 1983

Magnetic recording disk

BASF AG5 citations62

US4382244AMay 3, 1983

Device for magnetically orienting the magnetizable particles or magnetic recording media in a preferred direction

BASF AG5 citations62

US4061726ADec 6, 1977

Manufacture of acicular γ-iron(III) oxide

BASF AG6 citations62

US4018882AApr 19, 1977

Manufacture of gamma-iron (III) oxide

BASF AG3 citations62

US4438462AMar 20, 1984

Document identification employing exchange-anisotropic magnetic material

BASF AG5 citations61

US4668586AMay 26, 1987

Magnetic recording media

BASF AG3 citations60

KOESTER EBERHARD

Patents

Apparatus for spin coating in the production of thin magnetic layers for magnetic discs

Process of making a magnetic recording medium

Naphtholactam dyes and optical recording medium containing these dyes

Manufacture of ferromagnetic metal particles essentially consisting of iron

Manufacture of acicular ferromagnetic metal pigments containing iron

Manufacture of ferromagnetic, acicular metallic iron particles by hydrogen reduction

Production of magnetic recording media

Magnetic recording media

Preparation of acicular, ferrimagnetic iron oxides

Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron

Manufacture of acicular cobalt-containing magnetic iron oxide

Manufacture of acicular ferrimagnetic iron oxides

Cleaning apparatus for a web of plastics film having a magnetic coating

Manufacture of acicular, ferrimagnetic iron oxide

Manufacture of acicular cobalt-modified magnetic iron oxide

Manufacture of acicular ferromagnetic iron particles

Manufacture of magnetic discs

Stabilization of pyrophoric metal powders with alkylene oxide polymers

Manufacture of gamma-iron(III) oxide

Manufacture of cobalt-modified γ-iron(III)oxides

Device for the magnetic orientation of magnetic recording media

Device for the non-destructive measurement of the remanent flux density of magnetic recording media, especially magnetic discs

Manufacture of magnetic materials which exhibit exchange anisotropy

Naphtholactam dyes and optical recording medium containing these days

Magnetic recording medium and its manufacture

Document authentication by means of exchange-anisotropic magnetic material

Stabilization of chromium dioxide magnetic pigments

Magnetic tape cassette with screening shield

Magnetic materials with exchange anisotropy and process for their manufacture

Preparation of a magnetic dispersion

Magnetic tape cassette arrangements

Tape cassette containing echo-erasing means

Production of magnetic recording media

Magnetic recording disk

Device for magnetically orienting the magnetizable particles or magnetic recording media in a preferred direction

Manufacture of acicular γ-iron(III) oxide

Manufacture of gamma-iron (III) oxide

Document identification employing exchange-anisotropic magnetic material

Magnetic recording media