| 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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| 09/20/1990 | WO1990010930A1 Estimator positioning system and method |
| 09/20/1990 | WO1990010929A1 Magnetic recording and reproducing apparatus |
| 09/20/1990 | WO1990010666A1 Composite polyester films as final coating supports |
| 09/20/1990 | DE4008134A1 Magnetic recording medium |
| 09/20/1990 | CA2028100A1 Composite polyester films used as final coatings medium |
| 09/19/1990 | EP0388088A2 Magnetic data storage disk with low intrinsic media noise |
| 09/19/1990 | EP0388087A2 Linear actuator for a disk file |
| 09/19/1990 | EP0387882A2 Magnetic recorder/reproducer for recording digital signal on a plurality of tracks of magnetic recording media and reproducing the same |
| 09/19/1990 | EP0387813A2 Automatic equalizer |
| 09/19/1990 | EP0387809A1 A method of writing in and reading out data to and from a magnetic card and a reader/writer for such a method |
| 09/19/1990 | EP0387770A2 Thin-film magnetic head |
| 09/19/1990 | EP0387629A2 Magnetic pigments containing cobalt, process for their production and their use |
| 09/19/1990 | EP0387619A2 Method of and apparatus for making magnetic recording medium |
| 09/19/1990 | EP0387573A1 Fine-grained magnetic hexaferrites with a low temperature dependence of the coercivity, and their use |
| 09/19/1990 | EP0387571A1 Fine-grained magnetic hexaferrites with a low temperature-dependent coercitive force, and their use |
| 09/19/1990 | EP0387444A2 Subambient pressure air bearing |
| 09/19/1990 | EP0387443A1 Method and apparatus for testing operation of a memory device |
| 09/19/1990 | EP0387364A1 Thin film magnetic head unit |
| 09/18/1990 | US4958337 Disk recording checking method for determining if a disk is defective by the number of errors present |
| 09/18/1990 | US4958248 Reflective tachometer/headwheel assembly for a rotary head scanner |
| 09/18/1990 | US4958246 Device of multi-channel rotary head type having function to discriminate recorded state |
| 09/18/1990 | US4958245 Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities |
| 09/18/1990 | US4957812 Composite magnetic powder, method for producing the same and recording medium containing the same |
| 09/18/1990 | US4957549 Rare earth metal-iron group metal target, alloy powder therefor and method of producing same |
| 09/12/1990 | EP0387147A2 Head actuator for disc drive and storage system and method for its manufacture |
| 09/12/1990 | EP0387143A2 Method of electrolytic deposition on a semiconductor substrate |
| 09/12/1990 | EP0387104A1 Servo system for positioning transducer heads |
| 09/12/1990 | EP0386762A2 Magnetic disk and process and apparatus for producing the same |
| 09/12/1990 | EP0386534A1 Fine-grained magnetic hexaferrites with a negative temperature-dependent coercivity, and their use |
| 09/12/1990 | EP0386362A2 Data storage apparatus |
| 09/12/1990 | EP0153410B1 Apparatus for recording and reproducing signal |
| 09/12/1990 | CN1045310A Thin film magnetic read/write head and method of forming the same |
| 09/12/1990 | CN1045309A Longitudinal magnetic tape recording system, magnetic tape apparatus for use in the system, and magnetic head for use in the magnatic tape apparatus |
| 09/12/1990 | CN1009595B Recording and/or reproducing apparatus for tongitudinal recording |
| 09/11/1990 | US4956831 Low acoustic noise head actuator |
| 09/11/1990 | US4956737 Magnetic head contour utilizing facets for air film skiving |
| 09/11/1990 | US4956736 Thin film magnetic element having a rhombic shape |
| 09/11/1990 | US4956735 Actuator magnetic circuit |
| 09/11/1990 | US4956733 Storage media transducer loading/unloading and carriage lock mechanism |
| 09/11/1990 | US4956730 Apparatus having a high-speed search capability for reproducing signals recorded on a tape |
| 09/11/1990 | US4956729 Video signal preamplifier circuit |
| 09/11/1990 | US4956728 Method of and device for demagnetizing magnetic recording medium |
| 09/11/1990 | US4956727 Disc memory servo indexing system |
| 09/11/1990 | US4956724 Multi-channel recording and/or reproducing apparatus capable of simultaneously recording and/or reproducing of two channels |
| 09/11/1990 | US4956229 Magnetic recording medium |
| 09/11/1990 | US4956220 Magnetic recording medium |
| 09/07/1990 | WO1990010290A1 Circuit arrangement for reversing a magnetic field |
| 09/07/1990 | WO1990010289A1 Suspension system for magnetic heads |
| 09/07/1990 | WO1990010288A1 Magnetic head guide device |
| 09/05/1990 | EP0385739A2 Method and apparatus for writing a serial data pattern on a magnetic medium |
| 09/05/1990 | EP0385715A2 Magnetic recording medium |
| 09/05/1990 | EP0385646A1 Binder composition for use in magnetic recording media |
| 09/05/1990 | EP0385359A2 Magnetic head |
| 09/05/1990 | EP0385179A1 Method of making a magnetic-recording medium |
| 09/05/1990 | EP0385023A2 A thin film magnetic read/write head and method of forming the same |
| 09/05/1990 | EP0384947A2 Flexure guide for straight-line motion |
| 09/05/1990 | CN2061726U Cartridge cycle tape |
| 09/05/1990 | CN1009504B Cassette tape recording and/or playback apparatus |
| 09/04/1990 | US4954921 Magnetic transducer head structure with reduced leakage between core circuits |
| 09/04/1990 | US4954920 Thin film magnetic head |
| 09/04/1990 | US4954919 Rotary seek magnetic head assembly having a looped load beam end to achieve high speed access |
| 09/04/1990 | US4954909 Data memorizing device which determines the movement of the recording head |
| 09/04/1990 | US4954906 Position control system for a magnetic storage device using a small sized disk |
| 09/04/1990 | US4954905 Data transducer position control system for disk storage drive system |
| 09/04/1990 | US4954904 Method and apparatus for preventing head crashes in a disk system |
| 09/04/1990 | US4954902 Tracking control method and device in rotary head type magnetic recording and reproducing apparatus |
| 09/04/1990 | US4954232 Magneto-optical recording element and method for fabrication thereof |
| 09/04/1990 | US4953385 Information storage stamper and method of manufacturing disks using the same |
| 09/04/1990 | US4953252 Roll surface cleaning device |
| 09/04/1990 | CA1273471A1 Process for producing acicular particles containing an iron carbide |
| 08/30/1990 | DE4005504A1 Magnetic head with temp. check - includes magnetic sensors in series, each contg. magnetic-field dependent resistance device |
| 08/29/1990 | EP0384833A2 Head exchange system for disc drive system |
| 08/29/1990 | EP0384574A2 Magnetic memory storage devices |
| 08/29/1990 | EP0384495A2 Rotary drive device |
| 08/29/1990 | EP0384414A2 Magnetic disk substrate |
| 08/29/1990 | EP0383957A1 Process and disposition for positioning a magnetic head of a magnetic layer memory |
| 08/29/1990 | CN1009401B Perpendicular magnetic storage medium |
| 08/29/1990 | CN1009400B Arranging structure of inverting heads for auto-inverting recorder |
| 08/28/1990 | US4953161 Magnetic head tracking device using plural gaps |
| 08/28/1990 | US4953051 Composite magnetic head |
| 08/28/1990 | US4953050 Magnetic head with Ru containing soft magnetic alloy in gap |
| 08/28/1990 | US4953049 Ferromagnetic oxide and metal |
| 08/28/1990 | US4953048 Magnetic head with specific gap structure |
| 08/28/1990 | US4953047 Magnetic head sandwich assembly having reduced thickness |
| 08/28/1990 | US4953046 Device for supporting magnetic heads for double sided discs |
| 08/28/1990 | US4953043 Magnetic recording or reproducing apparatus with erasing capability |
| 08/28/1990 | US4953041 Read channel detector for use in digital magnetic recording systems |
| 08/28/1990 | US4952458 Magnetic recording medium |
| 08/28/1990 | US4952449 With surface projections; for magnetic recording media |
| 08/28/1990 | US4952444 Polyurethane, polyisocyanate cellulose non-magnetic layer; ferromagnetic layer |
| 08/28/1990 | US4952435 Adhesive for a base-mounted flexible magnetic disc |
| 08/28/1990 | US4951381 Method of manufacturing a magnetic head slider |
| 08/28/1990 | CA1273359A1 Radiation curable phosphonate ester compounds |
| 08/24/1990 | CA2007658A1 Magnetic memory storage devices |
| 08/23/1990 | WO1990009660A1 Disk drive head lift mechanism |
| 08/23/1990 | WO1990009659A1 Carrier and method of attachment for disk file head/arm assemblies |
| 08/23/1990 | WO1990009658A1 Thin-film magnetic head with two magnetic poles separated by a narrow gap for vertical recording |
| 08/23/1990 | CA2010290A1 Magnetic disk substrate |
| 08/22/1990 | EP0383739A1 Method for making thin film magnetic head |
| 08/22/1990 | EP0383738A1 Lapping control system for magnetic transducers |