| 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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| 07/25/1990 | CN1008952B Information reproducing and recording apparatus |
| 07/24/1990 | US4943883 Quarternary amorphous magnetic alloy thin film and magnetic head including same |
| 07/24/1990 | US4943882 Thin-film, perpendicular magnetic recording and reproducing head |
| 07/24/1990 | US4943881 Head supporting structure in disk drive system for double sided flexible disk |
| 07/24/1990 | US4943879 Thin film magnetic head including magnetic layers having high saturation magnetic flux density and metal film for avoiding deterioration during manufacturing |
| 07/24/1990 | US4943877 Fine head positioning system for a tape backup device |
| 07/24/1990 | US4943876 Magnetic head positioning apparatus for floppy disk drive |
| 07/24/1990 | US4943875 Magnetic disk file head suspension assembly mounting means |
| 07/24/1990 | US4943867 Electronic still camera |
| 07/24/1990 | US4943612 Ultra-fine particulated polymer latex and composition containing the same |
| 07/24/1990 | US4943479 Radiation polymerizable binder layer, acrylic compound with triazine ring |
| 07/24/1990 | US4942658 Method for manufacturing a magnetic head core with a flux gap having a precisely controlled length |
| 07/19/1990 | DE4001225A1 Magnetic reading head |
| 07/18/1990 | EP0378345A2 Negative-pressure type magnetic head slider, and method of producing the same |
| 07/18/1990 | EP0378331A2 Servo circuit |
| 07/18/1990 | EP0378330A2 Servo circuit control system |
| 07/18/1990 | EP0378329A2 Servo circuit for magnetic disk apparatus |
| 07/18/1990 | EP0378328A2 Servo positioning circuit |
| 07/18/1990 | EP0378327A2 Automatic adjustment system for servo circuit of a magnetic disk apparatus |
| 07/18/1990 | EP0378282A2 Hard disk drive module and receptacle therefor |
| 07/18/1990 | EP0378250A2 Method and apparatus for editing information data on slant tracks on a magnetic tape |
| 07/18/1990 | EP0378222A1 Magnetic recording medium and method of magnetically recording and reading data |
| 07/18/1990 | EP0378220A1 A rotary head type magnetic recording/reproducing device |
| 07/18/1990 | EP0378214A1 Magnetic head |
| 07/18/1990 | EP0378160A2 Magnetic head and method of producing the same |
| 07/18/1990 | EP0377933A2 Magnetic iron oxide particles and method of producing the same |
| 07/18/1990 | EP0377821A1 Method for the preparation of particulate magnetic hexagonal ferrites by spray-drying barium salts and iron oxides, and their use |
| 07/18/1990 | CN1043947A Film of polyester composition used for basis of magnetic recording material and obtained it |
| 07/18/1990 | CN1008844B Thin magnetic head slider and process method of materials used for the slider |
| 07/18/1990 | CN1008843B Method of making a linear standard magnetic tape |
| 07/18/1990 | CA2007925A1 Magnetic recording medium |
| 07/17/1990 | US4942609 Electronic flying integrity tester for disk drives |
| 07/17/1990 | US4942491 In a data transfer apparatus |
| 07/17/1990 | US4942490 Thin layer magnetic read/write head |
| 07/17/1990 | US4942489 Thin-film magnetic head |
| 07/17/1990 | US4942487 Apparatus for recording/reproducing a digital signal at variable speeds |
| 07/17/1990 | US4942486 Recording disk having read-only recording area and writable recording area and a driving apparatus therefor |
| 07/17/1990 | US4942485 Apparatus capable of data reproduction from digital tape cassettes or like storage media employing two different recording methods |
| 07/17/1990 | US4942484 Floppy disk drive with closed loop servoed high density read/write gap, and with low density read/write gap for the write updating of standard open loop formatted medium |
| 07/17/1990 | US4941920 Cobalt, chromium, nickel alloying targets |
| 07/17/1990 | CA2006886A1 Method and apparatus for reading or writing on tape using a servo positioned multiple channel head |
| 07/17/1990 | CA1271670A1 Process for forming a coating |
| 07/14/1990 | CA2007408A1 Acicular iron-magnet pigments having an adjustable coercive field strength and process for producing same |
| 07/13/1990 | CA2007688A1 Magnetic head |
| 07/12/1990 | WO1990007843A1 Audio/video recorder/transceiver |
| 07/12/1990 | WO1990007775A1 Magnetic recording medium having balanced characteristics |
| 07/12/1990 | WO1990007774A1 Deposited permanent magnet for hard and easy axes biasing of a magnetoresistive head |
| 07/12/1990 | WO1990007773A1 Permanent magnet shaped to provide uniform biasing of a magnetoresistive reproduce head |
| 07/12/1990 | WO1990007772A1 Process for producing a reading/recording magnetic head and magnetic head obtained thereby |
| 07/12/1990 | WO1990007544A1 Composite polyester films suitable in particular as supports for magnetic recording materials, and magnetic recording materials thus produced |
| 07/12/1990 | DE3935065A1 Composite ferromagnetic reading head - has isolation layer between two different magnetic layers, and polished surface with winding grooves for recording and reproduction |
| 07/11/1990 | EP0377462A1 Magnetic disc file, thin film magnetic head and wafer for making thin film magnetic head |
| 07/11/1990 | EP0377297A2 Sulfonated hydroxy-functional polyurethanes for use in magnetic recording media and its method for preparation |
| 07/11/1990 | EP0377056A2 Self loading head assembly for disk drives |
| 07/11/1990 | CN1008780B Method and apparatus for reproducing signals |
| 07/10/1990 | US4941065 Apparatus for cleaning a video player/recorder |
| 07/10/1990 | US4941064 Strongly bonded magnetic gap with good magnetic characteristics |
| 07/10/1990 | US4941062 Magnetic head positioning mechanism for magnetic disk device |
| 07/10/1990 | US4941061 Noise-free skip search apparatus utilizing a piezo-electric element |
| 07/10/1990 | US4940749 Carbon black-graft polymer, method for production thereof, and use thereof |
| 07/10/1990 | US4940606 Heating |
| 07/10/1990 | US4940596 Decomposing ferromagnetic complex |
| 07/10/1990 | US4940511 Method for making a magnetoresistive read transducer |
| 07/10/1990 | US4939837 Batch fabrication process for magnetic heads |
| 07/10/1990 | US4939836 Method for the fabrication of a magnetic recording/reading head from a magnetic substrate |
| 07/10/1990 | US4939835 Method for achieving the planar surface of an active face for a magnetic recording/reading head |
| 07/10/1990 | CA1271557A1 Slow motion reproducing apparatus |
| 07/06/1990 | CA2005901A1 Sulfonated hydroxy-functional polyurethanes for use in magnetic recording media, composite, and method |
| 07/05/1990 | DE3943218A1 Automatic track locator for digital audio tapes - extracts pilot signals from head output to control head tracking value |
| 07/05/1990 | DE3843361A1 Duennfilm-magnetkopf fuer ein vertikal zu magnetisierendes aufzeichnungsmedium Duennfilm-magnetic head for a vertically magnetizing recording medium |
| 07/04/1990 | EP0376790A1 Process for producing planar magnetic heads, and magnetic heads obtained by such a process |
| 07/04/1990 | EP0376675A1 Video signal recording/reproducing device |
| 07/04/1990 | EP0376459A2 Recording heads with side shields |
| 07/04/1990 | EP0376033A2 Process for preparing magnetic iron oxides, and pigments thus obtained |
| 07/04/1990 | EP0376021A2 Styrene-based resin composite material and use thereof |
| 07/04/1990 | CN2059016U 延时录音机磁头 Delay recorder heads |
| 07/04/1990 | CN1008668B Magnetoresistive read transducer |
| 07/03/1990 | US4939715 Tape scanning apparatus |
| 07/03/1990 | US4939711 Arrangement for minimizing effects of leakage magnetic fields in optomagnetic recording/reproducing apparatus |
| 07/03/1990 | US4939614 Magnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the same |
| 07/03/1990 | US4939611 Vertical displacement limit stop in a disk drive for preventing disk surface damage |
| 07/03/1990 | US4939610 Nickel, iron, palladium; heat resistance; computers |
| 07/03/1990 | US4939609 Vertical recording head with thin film pole on non-magnetic block |
| 07/03/1990 | US4939608 Low-noise magnetic read/write head |
| 07/03/1990 | US4939607 Head carriage for use with a longitudinal recording system utilizing a rotary recording and/or reproducing head |
| 07/03/1990 | US4939605 Apparatus including a head wheel carrying advanced read, write and normal read heads for facilitating processing of television audio signals recorded on magnetic tape |
| 07/03/1990 | US4939604 Magnetic recording and reproducing apparatus and a magnetic head used for the apparatus |
| 07/03/1990 | US4939603 Magnetic head slider having a convex taper surface with the curvature facing a magnetic medium |
| 07/03/1990 | US4939600 Efficient head positioner power amplifier |
| 07/03/1990 | US4939596 Information signal recording and reproducing apparatus |
| 07/03/1990 | US4939563 Double carrier deflection high sensitivity magnetic sensor |
| 07/03/1990 | US4939046 Magnetic recording medium |
| 07/03/1990 | US4939045 Rotational hysteresis |
| 07/03/1990 | US4938915 Method of recording at least ternary data on optomagnetic recording medium having a plurality of magnetic layers |
| 06/28/1990 | WO1990007179A1 Thin film magnetic element having a rhombic shape |
| 06/28/1990 | WO1990007178A1 Thin-film magnetic head for a vertically magnetizable recording medium |
| 06/28/1990 | WO1990007177A1 Process for filling a trough-shaped depression exactly |
| 06/28/1990 | WO1990007176A1 Thin-film magnetic head with parts embedded in a substrate and process for obtaining it |
| 06/28/1990 | DE3941772A1 Magnetplatten-antriebsvorrichtung A magnetic disk driving device |
| 06/28/1990 | DE3931232A1 Head drum bearing arrangement for magnetic tape equipment - has compression spring between upper and lower bushings with load transfer to prevent jitter and oscillation |