Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
06/1993
06/30/1993EP0302893B1 Wipers for pair of stabilized magnetic disks
06/30/1993CN1021491C Metal-in-gap magnetic head
06/29/1993US5224003 Thin-film magnetic head with lead isolated from upper magnetic block
06/29/1993US5224002 Thin-film magnetic head device
06/29/1993US5224001 Magnetic head
06/29/1993US5224000 Crash stop and magnetic latch for a voice coil actuator
06/29/1993US5223998 Magnetic head slider unit having a float slider and magnetic head mounted thereon for contact magnetic recording
06/29/1993US5223997 Monolithic floating magnetic head without adverse adhesive effects
06/29/1993US5223994 System using superimposed, orthogonal buried servo signals
06/29/1993US5223993 Multiple actuator disk drive
06/29/1993US5223992 Rotary magnetic head device in magnetic recording and reproducing apparatus
06/29/1993US5223990 Data recording apparatus
06/29/1993US5223988 Recording/reproducing apparatus with noise removal and masking of phase rotational position signal
06/29/1993US5223342 The lubricant also having amide-, ester-and/or ether- and phenyl-groups which are soluble or miscible in the binder; enhanced sliding durability
06/29/1993US5223307 Packaging foil, and method for the production thereof
06/29/1993US5223304 Polishing with aqueous dispersion of fine diamond particles which also contains dissolved surfactant gives low surface irregularities
06/29/1993CA1319750C Method for recording/reproducing expanded digital signals in conventional format
06/28/1993CA2086068A1 Biaxially orientated laminated polyester film
06/24/1993WO1993012520A1 Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of providing same
06/24/1993WO1993012519A1 Magnetoresistive head with integrated bias and magnetic shield layer
06/24/1993WO1993004473A3 Program directory for a video tape cassette
06/24/1993DE4142643A1 Magnetic recording material - has dispersion of anisotropic material in a solution spread over surface of carrier material.
06/24/1993DE4142635A1 Magnetic recording material - has magnetic articles in solution containing water repellent polysilicic acid.
06/24/1993DE4142202A1 Magnetic recording head with wear resistant head - has surface coated with protective layer having crystalline diamond islands covered by carbon@ layer.
06/24/1993DE4141839A1 Magnetic recording material with improved wear resistance
06/24/1993DE4141838A1 Magnetic recording material with improved wear resistance
06/24/1993DE4141763A1 Magnetic materials comprising spin-coupled hard and soft magnetic phases
06/23/1993EP0547820A1 A magnetic recording disk having an improved protective overcoat
06/23/1993EP0547454A1 Gripping device for winding core
06/23/1993EP0547432A1 Magnetic recording medium
06/23/1993EP0547320A2 Equipment for driving magnetic heads designed for recording data on a magnetic medium
06/23/1993CN1021383C Magnetic disk device
06/22/1993US5222006 Magnetic head and core chip having a magnetic thin film
06/22/1993US5222002 Semiconductor integrated circuit which performs phase synchronization
06/22/1993US5221582 Magnetic recording medium containing a binder consisting essentially of a specified vinyl chloride polymer and a specified polyurethane polymer
06/22/1993US5221459 Method of manufacturing a magnetic disk substrate of titanium
06/22/1993US5221422 Lithographic technique using laser scanning for fabrication of electronic components and the like
06/22/1993US5221322 Containing at least iron, cobalt and phosphorous
06/22/1993CA1319427C Magnetic head of floating type and process for producing same
06/22/1993CA1319425C Information recording apparatus
06/22/1993CA1319422C Order entry process for magnetically encodable film with dedicated magnetic tracks
06/16/1993EP0546604A1 Magnetic thin film structure and thin film magnetic head thereof
06/16/1993EP0546578A2 Magnetic recording/reproducing apparatus with time code recording
06/16/1993EP0546312A1 Cancellation of the effects of stray magnetic fields on magnetic heads in a disc drive
06/16/1993EP0546277A2 Magnetic recording disc and process for preparing the same and process for magnetic recording and reproduction thereon
06/16/1993EP0546251A2 Cathodic sputtering apparatus
06/16/1993EP0546227A1 A method of servowriting a magnetic disk drive
06/16/1993EP0431061A4 Training method and apparatus with audio and digital signals recording and play back
06/16/1993EP0277958B1 System and method to improve picture quality during shuttling of video tapes
06/16/1993CN1021260C Method and apparatus for recording information signal
06/15/1993US5220476 Non-erasable magnetic data storage method
06/15/1993US5220474 Demagnetizer for magnetic heads of floppy disc drive
06/15/1993US5220473 Multitrack magnetic head assembly having a tape-engaging surface contoured for continuous in-contact recording
06/15/1993US5220471 Air bearing slider having a longitudinal groove in surface remote from recording medium
06/15/1993US5220470 Method of adapting slider to include back-bar
06/15/1993US5220469 Magnetic recording and reproducing apparatus having a loading ring disposed to intersect perpendicularly with a drum axis, and a loading base slidably mounted on at least one guide shaft fixed perpendicularly to the loading ring
06/15/1993US5220468 Disk drive with constant bandwidth automatic gain control
06/15/1993US5220467 Circuit arrangement for reversing a magnetic field
06/15/1993US5220466 Method and apparatus for digital filter control in a partial-response maximum-likelihood disk drive system
06/15/1993US5220408 Method and apparatus for calibration of optical flying-height testers
06/15/1993US5219670 Magnetic recording medium
06/15/1993US5219663 Using a bis/hydroxyphenol/alkane or cycloalkane as a polycarbonate monomer to impart solvent solubility to a coating formulation; chain extension
06/15/1993US5219652 Back coat layer including spherical particles which have been surface-treated for lubricity
06/15/1993US5219651 Organic thin film protective layer containing filler; sliding durability
06/15/1993US5218755 Method of manufacturing a magnetic head
06/15/1993CA1319191C Magnetic recording apparatus for recording video and two kinds of audio signals
06/15/1993CA1319052C Thin film structure having magnetic and color shifting properties
06/10/1993WO1993011532A1 Dual-layer etch process
06/10/1993WO1993011531A1 Thin film magnetic head
06/10/1993WO1993011177A1 Vinyl chloride and heterocyclic thione functional polyurethane polymer blends and their use in magnetic recording media
06/10/1993CA2124351A1 Vinyl chloride and heterocyclic thione functional polyurethane polymer blends and their use in magnetic recording media
06/09/1993EP0545781A1 Spring for a flying slider, machine and method for making said spring
06/09/1993EP0545610A1 Data memory disk carrier and method of manufacture
06/09/1993EP0545579A1 External magnetic field generation apparatus and a magneto-optical recording apparatus
06/09/1993EP0545472A1 Closed information system with physical copy protection
06/09/1993EP0545310A2 Loading/unloading mechanism for a magnetic head
06/09/1993EP0545268A1 Magnetic recording medium
06/09/1993EP0545259A1 Coating method and apparatus having an exchangeable resisting body insertable in the reservoir
06/09/1993EP0545084A1 Extrusion type coater and coating method
06/09/1993CN1021154C Thermoplastic polyurethanes having improved binder properities for magnetic media
06/08/1993US5218504 Disc-drive apparatus having function of preventing destruction of data
06/08/1993US5218500 Magnetic head having a single-crystal ferrite core
06/08/1993US5218499 Thin-film magnetic head for perpendicular magnetic recording having a magnetic member with grooves crossing at right angles formed in a principal surface thereof
06/08/1993US5218498 Composite read-while-write magnetic head assembly
06/08/1993US5218497 Magnetic recording-reproducing apparatus and magnetoresistive head having two or more magnetoresistive films for use therewith
06/08/1993US5218496 Magnetic disk drive with reduced disk-to-disk spacing and improved actuator design
06/08/1993US5218495 Negative pressure air bearing slider with spoiler channels
06/08/1993US5218494 Negative pressure air bearing slider having isolation channels with edge step
06/08/1993US5218493 Magnetic recording apparatus including a magnetic head having a curved media-contact surface equal to the curvature of a rotatable drum
06/08/1993US5218492 Magnetic recording and/or reproducing apparatus
06/08/1993US5218489 Auto tracking apparatus for video tape recorder
06/08/1993US5218424 Flying height and topography measuring interferometer
06/08/1993US5218072 Sulfonated and non-sulfonated, thiol, and hydroxy functional polyurethanes and graft copolymers made therewith
06/08/1993US5217820 High density slave magnetic recording media having specified perpendicular squareness rectangular ratio, roughness and number of projections
06/08/1993US5217819 Method of manufacturing a thin-film magnetic head and magnetic head
06/08/1993US5217818 Tungsten oxide and iron oxide
06/08/1993US5217810 Magnetic recording medium having a magnetic layer containing chromium dioxide particles and linolenic acid
06/08/1993US5217804 Magnetic particles
06/08/1993US5217542 Method for producing surface-treated magnetic powder
06/08/1993US5216925 Apparatus for non-intrusive continuous and automatic taking of samples, storing and supplying of samples and data for a possible evaluation