| Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826) |
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| 03/26/1991 | US5003414 Digital signal reproducing apparatus having improved pilot level compensation control |
| 03/26/1991 | US5003413 Tracking control circuit of helical scanning magnetic tape apparatus |
| 03/26/1991 | US5003412 Method and apparatus for positioning a read/write mechanism |
| 03/26/1991 | US5003411 Method for recording/reproducing and searching digital signals using a helical scan type rotary head |
| 03/26/1991 | US5003409 Dual layered magnetic data card with reading and recording apparatus |
| 03/26/1991 | US5002751 Highly-coercive isometric iron oxides, a process for the production and the use thereof |
| 03/26/1991 | CA1282122C Laser milling for producing very small parts |
| 03/21/1991 | WO1991003824A1 Rotary electric machine |
| 03/21/1991 | WO1991003809A1 Magnetic head positioner |
| 03/21/1991 | WO1991003800A1 Data transfer head |
| 03/20/1991 | EP0418127A1 Process for producing pole pieces and gap of thin layer magnetic heads for information processing, audio or video |
| 03/20/1991 | EP0417900A2 Disk storage system with access control |
| 03/20/1991 | EP0417866A1 Silicone polymer-coated powder or particulate material |
| 03/20/1991 | EP0417758A2 Magnetic recording medium |
| 03/20/1991 | EP0417322A1 Molding method of magnetic disc substrate |
| 03/20/1991 | EP0417266A1 Magnetic head contour utilizing facets for air film skiving |
| 03/20/1991 | EP0417261A1 Magnetoresistant magnetic head for the longitudinal recording and method for making the same. |
| 03/20/1991 | CN1012114B Expandable suspension for supporting a slider and moving it to the disk in a data recording disk file |
| 03/20/1991 | CN1012113B Magnetic transducing head having clad core faces |
| 03/19/1991 | US5001591 Thin film magnetic head |
| 03/19/1991 | US5001590 Magnetic head having core halves with a barrier layer therebetween |
| 03/19/1991 | US5001589 Tungsten and tantalum diffusion barriers for Metal-In-Gap magnetic heads |
| 03/19/1991 | US5001588 Composite core magnetic transducer having a wedge shaped core portion |
| 03/19/1991 | US5001586 Very low noise magnetoresistive sensor for high density media applications |
| 03/19/1991 | US5001585 Rotational transformer for a tape recorder |
| 03/19/1991 | US5001584 Head-positioner arm for data recorders |
| 03/19/1991 | US5001583 Flexible polymeric resinous magnetic head supporting device |
| 03/19/1991 | US5001580 Method to compensate for tape slope and head azimuth errors |
| 03/19/1991 | US5001579 Method and apparatus for centering a transducer over a recorded track on a rotary storage medium |
| 03/19/1991 | US5001578 Method and system for controlling disk recording and reproduction apparatus for reduced power consumption |
| 03/19/1991 | US5001568 Signal evaluation by accumulation at one rate and releasing and testing at a slower rate |
| 03/19/1991 | US5001331 System for establishing production history |
| 03/19/1991 | US5001018 Fe-Co base magnetic film and process for producing the same |
| 03/19/1991 | US5001006 Multilayer element with nonmagnetic support with ferromagnetic particles and binders in two layers |
| 03/19/1991 | US5000995 Vapor deposition of flux on a support, magnetic tapes or disks |
| 03/19/1991 | US5000984 Method of making a magnetic recording medium |
| 03/19/1991 | US5000983 Process for the preparation of magnetic recording medium |
| 03/19/1991 | US5000982 Magnetic recording medium and method for producing the same |
| 03/19/1991 | US5000865 Method for the production of alkaline-earth ferrites and lead ferrites for memory cores |
| 03/19/1991 | US4999905 Method of making magnetic transducer |
| 03/19/1991 | US4999904 Method of manufacture of magnetic head |
| 03/19/1991 | CA2024867A1 Smooth-surfaced magnetic recording medium |
| 03/14/1991 | DE4027065A1 Saturating type permanent magnet erase head - uses two pole magnetic fields with smaller inverted fields |
| 03/13/1991 | EP0416994A1 Method of manufacturing a magnetic head having a simple axis of magnetization suitably oriented and head produced by that method |
| 03/13/1991 | EP0416939A2 Method of producing a core for magnetic head |
| 03/13/1991 | EP0416938A2 Method of producing a core for magnetic head |
| 03/13/1991 | EP0416582A2 Reader |
| 03/13/1991 | EP0416563A2 Rotary head type magnetic tape recording and reproducing apparatus |
| 03/13/1991 | EP0416548A2 Magnetic recording material |
| 03/13/1991 | EP0416403A1 Magnetic iron-oxide pigment, production method and application |
| 03/13/1991 | EP0416392A2 Magnetic recording media |
| 03/13/1991 | EP0416388A2 Magnetic recording media |
| 03/13/1991 | EP0416387A2 Magnetic recording medium |
| 03/13/1991 | EP0416386A2 Magnetic recording medium |
| 03/13/1991 | EP0416385A2 Process for fabrication of magnetic recording media |
| 03/13/1991 | EP0416324A2 Magnetic recording medium |
| 03/13/1991 | EP0415936A1 Bimodal multi-track magnetic head |
| 03/13/1991 | EP0264375B1 Method and device for the electronic processing of stored video signals |
| 03/13/1991 | EP0035539B1 High capacity data cartridge system |
| 03/13/1991 | CN1011983B High magnetic conductivity wear-resistant alloys and process for producing |
| 03/12/1991 | US4999828 Record carrier decoder for multi-track data patterns including error protection data |
| 03/12/1991 | US4999726 Magnetic core for flying-type composite magnetic head |
| 03/12/1991 | US4999724 Disk drive having an electrically isolated disk stack |
| 03/12/1991 | US4999722 Multi-channel information signal reproducing apparatus for reproducing information signals from a tape-shaped record bearing medium having a plurality of areas which respectively extend longitudinally and parallel with each other |
| 03/12/1991 | US4999530 Linear pulse motor with magnetic armature lock |
| 03/12/1991 | US4999220 Method for manufacturing perpendicular magnetic recording medium |
| 03/12/1991 | US4999217 Process for producing magnetic recording medium |
| 03/12/1991 | CA1281491C Resin used for magnetic recording media and a method for the production of the same |
| 03/07/1991 | WO1991003044A1 Process and device for copying magnetic tapes |
| 03/07/1991 | DE4026316A1 Thin film magnetic head - uses double slot to provide vertical magnetisation with magnetic medium with separate coils for reading writing |
| 03/07/1991 | DE3929614A1 Prodn. of vanadium-cobalt multilayer - having vertical magnetic anisotropic properties, using anionic sputtering technique with each metal being separately pptd. |
| 03/07/1991 | DE3928823A1 Magnetic recording carrier prodn. - with carbon black-contg. layer measurement by microwave absorption |
| 03/07/1991 | DE3928768A1 Multilayer magnetic film with low magnetostriction effect - consists of alternating layers of iron, cobalt alloy and iron based alloy with high magnetic saturation properties |
| 03/07/1991 | DE3928766A1 Multilayer ferromagnetic film - with high satn. induction and corrosion resistance, for magnetic heads and recording media |
| 03/07/1991 | DE3928759A1 Multilayer ferromagnetic film - with high saturation. induction and low magnetostriction, for magnetic heads and recording media |
| 03/06/1991 | EP0415757A1 Erasing device |
| 03/06/1991 | EP0415708A2 Magnetic recording medium |
| 03/06/1991 | EP0415454A2 Magnetic storage apparatus having small diameter |
| 03/06/1991 | EP0415431A2 Magnetic recording medium |
| 03/06/1991 | EP0415364A2 Magnetic recording medium |
| 03/06/1991 | EP0415358A2 Magnetic tape recording apparatus of helical scan type |
| 03/06/1991 | EP0415335A2 Magnetic recording medium |
| 03/06/1991 | EP0415155A2 A perpendicular magnetic recording medium and method of forming the same |
| 03/06/1991 | EP0414976A2 Method of setting the magnetic domain structure of a magneto-resistive sensor |
| 03/06/1991 | EP0414969A1 Method of producing a core for magnetic head |
| 03/06/1991 | EP0414702A1 Voice coil actuator. |
| 03/06/1991 | EP0414694A1 Estimator positioning system and method. |
| 03/06/1991 | CN1049739A Magnetic desk controlling device |
| 03/06/1991 | CN1049736A Magnetic disc apparatus |
| 03/06/1991 | CN1049735A Thin type recorder |
| 03/06/1991 | CN1011927B Auto-reverse tape recording and reproducing apparatus |
| 03/05/1991 | US4998174 Floating type magnetic head assembly |
| 03/05/1991 | US4997696 Ferromagnetic iron oxide powder dispersed on binder on nonmagnetic support; high carrier to noise tapes |
| 03/05/1991 | US4997675 Production of magnetic recording media for perpendicular recording |
| 03/05/1991 | US4997539 Method and apparatus for producing a magnetic recording medium |
| 03/05/1991 | US4997120 Method and apparatus for controlling tension with a lock mechanism |
| 03/05/1991 | CA1281132C Magnetic transducer head utilizing magnetoresistance effect |
| 03/01/1991 | WO1991003810A1 Magnetic recording medium |
| 03/01/1991 | CA2064214A1 Plated-through printed circuit board with resist and process for producing it |
| 03/01/1991 | CA2039161A1 Magnetic recording medium |