Inventor
HACK JOACHIM
23 patents
Patents
23 patentsUS4157576AJun 5, 1979
Track-dependent transducer position control in magneto-dynamic storage devices, and a magnetic recording medium to which this method is applicable
BASF AG31 citations92
US4346413AAug 24, 1982
Magnetic head positioning servo arrangement for a system for recording/reproducing information on a magnetic recording medium, particularly on a flexible magnetic recording medium
BASF AG20 citations82
US4327139AApr 27, 1982
Rigid magnetic recording disk having perfluoropolyether lubricant
BASF AG25 citations82
US4320171AMar 16, 1982
Magnetic recording media containing elastomeric polyurethane binders in the magnetic coating
BASF AG22 citations80
US4514937AMay 7, 1985
Method for the surface treatment of magnetic recording media
BASF AG23 citations78
US4084201AApr 11, 1978
Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control
BASF AG26 citations77
US4074002AFeb 14, 1978
Magnetic recording media having a low coefficient of friction
BASF AG12 citations73
US5084319AJan 28, 1992
Disk-shaped magnetic recording media, their production and information stores containing these recording media
BASF AG9 citations72
US4396886AAug 2, 1983
Document authentication by means of exchange-anisotropic magnetic material
BASF AG13 citations72
US4018967AApr 19, 1977
Magnetic recording tape
BASF AG9 citations72
US4018968AApr 19, 1977
Coated magnetic recording media
BASF AG10 citations72
US4623942ANov 18, 1986
Method and arrangement for detecting error signals in a disk-drive, and a magnetic test disk therefor
BASF AG13 citations70
US5050015ASep 17, 1991
Method and arrangement for reducing wear in a magnetic storage means
BASF AG12 citations69
US4534999AAug 13, 1985
Production of magnetic recording media having a backing coating
BASF AG3 citations62
US4303951ADec 1, 1981
Device for compensating unequal write fields in magnetic data-storage devices, especially in disc memories
BASF AG5 citations62
US4000336ADec 28, 1976
Production of magnetic recording media
BASF AG3 citations62
US4891114AJan 2, 1990
Magnetic recording media
BASF AG4 citations61
US4796137AJan 3, 1989
Protective jacket for a disk-shaped recording medium
BASF AG4 citations61
US4438462AMar 20, 1984
Document identification employing exchange-anisotropic magnetic material
BASF AG5 citations61
US4597990AJul 1, 1986
Preparation of magnetic recording media
BASF AG5 citations60
US4430678AFeb 7, 1984
Drive apparatus for recording disks in which the disk is clamped between a driven recessed member and a rotatably mounted clamping member
BASF AG5 citations57
US4551359ANov 5, 1985
Production of magnetic recording media
BASF AG0 citations47
US4626944ADec 2, 1986
Positioning device for scanning means in a disk drive unit
BASF AG1 citations45