Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
12/1988
12/13/1988US4791032 Magnetic recording media and process of fabricating
12/13/1988US4791021 Magnetic recording medium
12/13/1988US4790972 Polypropylene, adhesive, barrier layer; heat sealing before forming into containers
12/13/1988CA1246738A1 Magnetic-tape-cassette apparatus comprising a servo device
12/13/1988CA1246737A1 Cassette tape recording and/or reproducing apparatus
12/13/1988CA1246736A1 Method and apparatus to improve the positioning accuracy of a tracking arm
12/13/1988CA1246321A1 Magnetic particles and method of production thereof
12/08/1988DE3816467A1 Magnetic recording medium
12/08/1988DE3717552A1 Laminated magnetic head with main pole and auxiliary pole
12/07/1988EP0293864A2 Halogen-containing polyether and its use
12/07/1988EP0293809A2 Method and apparatus for controlling the positioning of a head in a recording/reproducing apparatus
12/07/1988EP0293685A2 Process for the preparation of stabilized acicular ferromagnetic chromiumdioxide
12/07/1988EP0293662A2 A process for making a thin film metal alloy magnetic recording disk with a hydrogenated carbon overcoat
12/07/1988CN87103744A Phonographic recorder tape for special purpose
12/06/1988US4790014 Low-pitched sound creator
12/06/1988US4789972 Selectively controlling the erasure in a magneto-optic recording medium
12/06/1988US4789914 Thin film magnetic read-write head/arm assemblies
12/06/1988US4789913 Method and apparatus for lubricating a magnetic disk continuously in a recording file
12/06/1988US4789910 Magnetic yokes with magnetic gap
12/06/1988US4789906 Video signal recording apparatus
12/06/1988US4789838 Pulse detection circuit using amplitude and time qualification
12/06/1988US4789606 Magneto-optical recording medium
12/06/1988US4789599 Epoxy containing vinyl chloride resin, perfluoroalkyl acid, magnetic powder; heat resistance
12/06/1988US4789598 With platinum and chromium for corrosion resistance, noise reduction; high density disks
12/06/1988US4789591 Iron oxide layer with absorged cobalt; high density, high resolution, thermal stability
12/06/1988US4789590 Vinyl chloride resin containing solfonate or caroxylic acid; magnetic tape head cleaner
12/06/1988US4789583 Magnetic recording medium
12/06/1988US4789581 Magnetic recording medium
12/06/1988US4789494 Magnetic recording media
12/06/1988US4789238 Method of inspecting magnetic disk surface
12/06/1988US4788762 Method of manufacturing a magnetic head for a video magnetic tape apparatus
12/06/1988CA1246216A1 Arch flexure for winchester sliders
12/06/1988CA1246215A1 Air bearing slider design
12/06/1988CA1246214A1 Moving magnet disc drive actuator
12/01/1988WO1988009550A1 Magnetic or other recording device with rotating engraving head(s)
12/01/1988DE3717655A1 Device for the magnetic recording and replaying of a number of video signals, using a tape-shaped recording carrier
11/1988
11/30/1988EP0292886A2 Process for applying dispersions to flexible supports in such a way that no patterns occur
11/30/1988EP0292740A2 Recording and reproducing apparatus
11/30/1988EP0292519A1 Process and device for generating material structures of atomic dimensions.
11/29/1988US4788713 One button control system for telephone answering device
11/29/1988US4788613 Magnetic head having coil bobbin for mounting printed circuit board
11/29/1988US4788612 Extended metal in gap head
11/29/1988US4788611 Magnetic transducer head
11/29/1988US4788608 Head positioning system for positioning a magnetic head on an eccentric target track
11/29/1988US4788602 Rotary head type recording and/or reproducing apparatus
11/29/1988US4788590 RF converter employing an SAW filter
11/29/1988US4788103 Magnetic recording medium
11/29/1988US4788095 Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
11/29/1988US4788092 High density, low noise, coercive force; ferromagnetic powder dispersed with binder
11/29/1988US4787942 Uniform films
11/24/1988DE3714787A1 Magnetic storage device with a recording medium to be magnetised and a corresponding magnetic head
11/23/1988EP0291693A1 Video apparatus with a scannable record carrier
11/22/1988US4787094 Apparatus for transmitting digital signal
11/22/1988US4787004 Magnetic head including single crystal and polycrystalline ferrites with interfacial oxide layer
11/22/1988US4787003 Step-up type magnetic head
11/22/1988US4787002 Magnetic head having a read/write coil with a d.c. current through it for cancellation of leakage magnetic flux from erase coil
11/22/1988US4787001 Magnetic disc apparatus
11/22/1988US4786999 Transducer suspension mount apparatus
11/22/1988US4786994 Method of and apparatus for controlling the displacement of a movable system driven by an electric motor
11/22/1988US4786993 Voltage amplifier for constant voltage biasing and amplifying signals from a MR sensor
11/22/1988US4786991 Magnetic recording/reproduction apparatus
11/22/1988US4786990 Servo gain compensation in a disc drive
11/22/1988US4786989 Waveform equalizer for signal reproduced from a magnetic recording medium
11/22/1988US4786988 Method and device for recording control signals for high-speed contact printing
11/22/1988US4786984 Method and apparatus for locating the edge of a magnetic tape
11/22/1988US4786657 Polyurethanes and polyurethane/polyureas crosslinked using 2-glyceryl acrylate or 2-glyceryl methacrylate
11/22/1988US4786564 Two layers of nickel-phosphorus alloy, sputtering
11/22/1988US4786559 Magnetooptical storage element
11/22/1988US4786558 Silanol coupling agent
11/22/1988US4786557 Magnetic recording medium of continuous form
11/22/1988US4786553 Cobalt-nickel magnetic film containing zirconium or hafnium; corrosion, wear resistance
11/22/1988US4786551 Ester lubricant, carbon black of two particle size ranges
11/22/1988US4786544 Dispersion of liquid and solid lubricants
11/22/1988US4786430 Glassy boron matrix
11/22/1988US4785526 Method of manufacturing a magnetic head
11/22/1988CA1245051A1 Calibration standards for flying height testers
11/17/1988WO1988009031A1 Forming digital data for magnetic tape
11/17/1988EP0291306A2 Magnetic card and methods for handling it
11/17/1988EP0291248A2 A magneto-optic medium and system
11/17/1988EP0291161A1 Electrolytic treatment of a surface
11/17/1988EP0290823A2 Magnetic head assembly for perpendicular magnetic recording
11/17/1988EP0290522A1 Device for generating and detecting magnetic material structures at atomic levels.
11/16/1988CN88102586A Recorder of turn back automatically
11/16/1988CN87103234A Tape recorder
11/15/1988US4785366 Magnetoresistive read transducer having patterned orientation of longitudinal bias
11/15/1988US4785363 Cartridge alignment mechanism for tape drive
11/15/1988US4785252 Waveform processing circuit
11/15/1988US4785239 Method and apparatus for characterizing magnetic coating compositions as well as improving magnetic particle dispersions
11/15/1988US4785161 Laser machining for producing very small parts
11/15/1988US4784914 Vinyl chloride copolymer with carboxy, sulfonate, phosphonate group, polyurethane blend
11/15/1988US4784913 Support with vinyl chloride resin with cationic ammonium groups
11/15/1988US4784907 Fatty ester lubricant, vinyl chloride polymer-polyurethane blend binder
11/15/1988US4784895 Mixed layer
11/15/1988CA1244939A1 Stretched surface recording disk substrate
11/15/1988CA1244937A1 Magnetic reproducing apparatus having thin film head for use with perpendicularly magnetized medium
11/15/1988CA1244818A1 Magnetic recording medium with lubricant
11/10/1988DE3814536A1 Binder for inorganic additives, and magnetic recording medium containing the binder
11/09/1988EP0290281A2 Apparatus for giving auxiliary magnetic field
11/09/1988EP0290263A1 Platelike magnetic powder and its manufacturing method and a recording medium which use the platelike magnetic powder
11/09/1988EP0290177A1 Process for producing ultrafine metal powder