| 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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| 06/28/1989 | EP0321942A2 Servo pattern for a flexible magnetic disk |
| 06/28/1989 | EP0321941A2 Process for identifying disks and automatically configuring a disk drive system |
| 06/28/1989 | EP0321519A1 Cartridge-shaped cleaning device |
| 06/27/1989 | US4843600 Recording head for magneto-optical information recording apparatus |
| 06/27/1989 | US4843509 Apparatus for demagnetizing the magnetic head of a cassette tape recording and/or reproducing device |
| 06/27/1989 | US4843508 Cleaning cartridge for cleaning the drive head/drive wheel of a cartridge tape drive system |
| 06/27/1989 | US4843507 Magnetic head with laminated structure |
| 06/27/1989 | US4843506 Shields of magnetoresistive transducers |
| 06/27/1989 | US4843505 Magnetoresistive sensing element with a projection for enhanced data reading |
| 06/27/1989 | US4843504 Superconductor devices useful for disk drives and the like |
| 06/27/1989 | US4843503 Head arm damping device for disc drive actuators |
| 06/27/1989 | US4843502 Magnetic head slider loading mechanism for magnetic disk apparatus |
| 06/27/1989 | US4843496 Track-finding servomechanism utilizing the sampled output of an envelope comparison |
| 06/27/1989 | US4843494 Data storage apparatus using optical servo tracks |
| 06/27/1989 | US4843490 System for discriminating between two tape assemblies of different recording characteristics to be loaded interchangeably in data transfer apparatus |
| 06/27/1989 | US4843487 Tape transporting device |
| 06/27/1989 | US4843486 Multi-element magnetic head and method of fabricating the same |
| 06/27/1989 | US4842942 Magnetic recording medium |
| 06/27/1989 | US4842939 Applying coating of polyurethane containing polyoxyfluoro-alkylene blocks |
| 06/27/1989 | US4842917 Magnetic recording medium and process for producing the same |
| 06/27/1989 | US4842896 Production of magnetic recording media |
| 06/27/1989 | US4842759 Acicular process for producing particulate material |
| 06/27/1989 | US4842708 Perpendicular magnetic recording medium, method for producing the same, and sputtering device |
| 06/27/1989 | US4842618 Method of producing magnetic disk |
| 06/27/1989 | US4841625 Automatic throat height control for film head |
| 06/27/1989 | US4841624 Method of producing a thin film magnetic head |
| 06/27/1989 | CA1256328A1 Magnetic disk coating method and apparatus |
| 06/22/1989 | DE3804825A1 Gedaempfte magnetkopfaufhaengungsanordnung Steamed magnetkopfaufhaengungsanordnung |
| 06/22/1989 | DE3741497A1 Method for fastening a small rolling bearing on a shaft |
| 06/21/1989 | EP0321250A2 Magneto-optic memory device |
| 06/21/1989 | EP0321027A2 Method of recording information on a record carrier of the thermomagnetic tye, and device for carrying out the method |
| 06/21/1989 | EP0320863A2 Ferromagnetic metallic acicular particles, mainly iron ones, and process for their production |
| 06/21/1989 | EP0320687A1 Thin film magnetic head for vertical magnetization |
| 06/21/1989 | EP0320520A1 A disk data storage file |
| 06/20/1989 | US4841402 Thin film magnetic head and method of manufacture |
| 06/20/1989 | US4841401 Multilayer; non-magnetic ceramic material sandwiching between layers of amorphous magnetic alloy and bonding with glass layer |
| 06/20/1989 | US4841400 Magnetic head core comprising a monocrystaline ferrite |
| 06/20/1989 | US4841399 Magnetoresistive magnetic head including zirconium sheet film |
| 06/20/1989 | US4841398 Non linear magnetoresistive sensor |
| 06/20/1989 | US4841397 Head shifting device |
| 06/20/1989 | US4841396 Double gimbal magnetic head supporting mechanism for a floppy disk drive |
| 06/20/1989 | US4841395 Static electricity discharge device for a magnetic head |
| 06/20/1989 | US4841389 Magnetic transducer crash anticipation and response method and apparatus |
| 06/20/1989 | US4841385 Data signal reproducing apparatus |
| 06/20/1989 | US4841384 Servo protection circuit for disk drive |
| 06/20/1989 | US4840845 Magnetic recording medium having perpendicular magnetic anisotropy |
| 06/20/1989 | US4840844 Magnetic recording medium |
| 06/20/1989 | US4840843 Nonmagnetic substrate, thin magnetic metal film, graphite structure carbon-metal protective layer |
| 06/20/1989 | US4840842 Magnetic recording media |
| 06/20/1989 | US4840830 Having in situ formed calcium-phosphorus salt, dispersion |
| 06/20/1989 | US4840818 Grinding dried surface of recording layer and removing dust before calendering |
| 06/20/1989 | US4840685 Aluminum alloy for the substrate of magnetic disk |
| 06/20/1989 | US4839959 Method of forming a magnetic head |
| 06/20/1989 | CA1256204A1 Video tape recorder having rotary recording, auxiliary and erasing heads, a circuit for short circuiting the auxiliary head during erasing |
| 06/20/1989 | CA1255972A1 Magnetic recording medium |
| 06/20/1989 | CA1255890A1 Magnetic thin film |
| 06/15/1989 | WO1989005506A1 Floppy disc 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 |
| 06/15/1989 | WO1989005505A1 Laminated poles for recording heads |
| 06/15/1989 | WO1989005362A1 A magnetic disk with a high incidence chromium underlayer |
| 06/15/1989 | DE3901666A1 Verfahren zur magnetkopfreinigung und vorrichtung zur durchfuehrung des verfahrens A method for magnetic head cleaning and device for implementing the method |
| 06/14/1989 | EP0320241A2 Magnetic recording medium and process for preparing the same |
| 06/14/1989 | EP0319803A2 Head position controlling circuit of a disc apparatus |
| 06/14/1989 | EP0319800A2 Optical media having interlaced data rings |
| 06/14/1989 | EP0319768A2 Magnetic tape for testing and adjusting magnetic heads |
| 06/14/1989 | EP0319530A1 Magnetic or other recording device with one or more rotating engraving heads. |
| 06/13/1989 | US4839763 Composite magnetic head core |
| 06/13/1989 | US4839762 Rotary head device |
| 06/13/1989 | US4839761 Magnetic head for perpendicular magnetic recording system |
| 06/13/1989 | US4839757 Manual head loading mechanism for flexible disk drive |
| 06/13/1989 | US4839753 Information recording disk |
| 06/13/1989 | US4839751 Track-following servo for disk drive with multiple reference windows and time dependent logic circuitry |
| 06/13/1989 | US4839750 Method and apparatus for recording and/or reproducing a PCM signal with asynchronous operation |
| 06/13/1989 | US4839244 Inorganic nonmetallic hard compound mixture; durability; corrosion resistance |
| 06/13/1989 | US4839225 Multilayer; nonmagnetic support and ferromagnetic particles in binder |
| 06/13/1989 | US4839217 Aromatic polyimide film |
| 06/13/1989 | US4839197 Successive layer deposition |
| 06/13/1989 | US4839129 Friction, chemical and solvent resistance; oil impregnation |
| 06/13/1989 | US4838994 Method for structuring a copper and/or permalloy layer by means of dry etching |
| 06/13/1989 | US4838648 Thin film structure having magnetic and color shifting properties |
| 06/13/1989 | US4837924 Process for the production of planar structure thin film magnetic heads |
| 06/13/1989 | US4837923 Surface finishing for magnetic transducers |
| 06/13/1989 | US4837922 Process for manufacturing a composite magnetic head structure |
| 06/07/1989 | EP0318937A2 Rotatable head type digital magnetic recording and reproducing device |
| 06/07/1989 | EP0318626A1 Device with read head for magnetically recorded datas |
| 06/07/1989 | EP0318590A1 Process for producing ultrafine magnetic metal powder |
| 06/07/1989 | EP0318520A1 Magnetisable man-made fibres |
| 06/07/1989 | CN1033333A 磁带录音机 Tape recorder |
| 06/06/1989 | US4837650 Head positioning device |
| 06/06/1989 | US4837649 Improvements to rotating head assembly in a video tape recording machine |
| 06/06/1989 | US4837648 Floating magnetic head |
| 06/06/1989 | US4837644 Magnetic recording/reproduction apparatus |
| 06/06/1989 | US4837643 Circuit for controlling frequency and phase of voltage controlled oscillator in a data smoother for a streaming cartridge tape drive |
| 06/06/1989 | US4837641 Rotary head type digital signal recording and reproducing apparatus |
| 06/06/1989 | US4837639 Control signal extraction in a reproducing apparatus |
| 06/06/1989 | US4837116 Magnetic recording medium and recording/reproducing method therefor |
| 06/06/1989 | US4837092 Magnetic recording powder, method of manufacturing thereof and application thereof |
| 06/06/1989 | US4837083 Applying dispersion of ferromagnetic and aluminum oxide powder in binder onto plastic base |
| 06/06/1989 | US4837082 Flexible magnetic recording media and a method using a stable fluid reactive dispersion to prepare magnetic recording media |
| 06/06/1989 | US4837081 Chromium oxide fine particle in polyurethane-polycarbonate binder |
| 06/06/1989 | US4837080 Magnetic recording mediums for high density recording comprising an improved structure of a magnetic layer |