| 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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| 01/31/1991 | DE3924987A1 Recording video signal with improved noise separation - using bridged T filter between frequency modulator output and current amplifier with linear characteristic |
| 01/30/1991 | EP0410804A2 Rotary head device |
| 01/30/1991 | EP0393116A4 Servo pattern |
| 01/30/1991 | EP0186662B1 Self-timed runout correction pattern |
| 01/30/1991 | CN2070492U Changeable game disc duplicating device |
| 01/30/1991 | CN1011445B Magnetic head supporting device of tape-recorder |
| 01/29/1991 | US4989206 Disk drive memory |
| 01/29/1991 | US4989205 Disk drive memory |
| 01/29/1991 | US4989109 Apparatus for accurately positioning a magnetic recording and reproducing head |
| 01/29/1991 | US4989103 Adjustment of position slope for disk drive servo using half-track point |
| 01/29/1991 | US4988933 Data storage |
| 01/29/1991 | US4988904 Voice coil motor with an encoder |
| 01/29/1991 | US4988903 Coil assembly for voice coil motor |
| 01/29/1991 | US4988578 Method for manufacturing a thin film magnetic recording medium |
| 01/29/1991 | US4988574 Magnetic tapes having a dispersion of magnetic particles with a polyesterurethane copolymer, a chain extender of modified bi sphenol a |
| 01/29/1991 | US4988562 Ferromagnetic powder, binder, carbon black, and acetylene black on support; television; durability |
| 01/29/1991 | US4988535 Magnetic recording medium |
| 01/29/1991 | US4988204 Joint inspection apparatus |
| 01/29/1991 | US4988047 Winding apparatus |
| 01/29/1991 | CA1279726C Method and apparatus for magnetic transducing |
| 01/29/1991 | CA1279725C Servo gain compensation in a disc drive |
| 01/24/1991 | WO1991001035A1 Process for treating the surface of a substrate |
| 01/24/1991 | DE4023202A1 Defective ferrite spinel magnetic material - heat treated to optimise and stabilise magnetic or magneto=optical properties |
| 01/24/1991 | DE4022202A1 Magnetic recording lubricated with fluorinated polyether and acid - which is oxo acid or salt contg. hydrocarbon gp. for durability and low friction |
| 01/24/1991 | DE4021982A1 Abrasion-resistant magnetic recording medium |
| 01/24/1991 | DE4021970A1 High density magnetic recording layer - uses an alloy of cobalt, platinum and chromium which is sputtered in an ambient containing oxygen and/or nitrogen |
| 01/24/1991 | DE3923383A1 Magnetic recording disc - with anisotropy-promoting interlayer of metal-germanium alloy |
| 01/23/1991 | EP0409675A1 Multitrack magnetic head with high field contrast |
| 01/23/1991 | EP0409673A2 Integrated magnetic recording head |
| 01/23/1991 | EP0409648A2 Protective layer for magnetic recording media |
| 01/23/1991 | EP0409548A2 Tracking error detection system |
| 01/23/1991 | EP0409411A2 Magnetic recording medium with cured surface coating |
| 01/23/1991 | EP0409217A2 Magnetic recording media and method for making them |
| 01/23/1991 | EP0409216A2 Use of magnetic recording media for recording a video signal |
| 01/23/1991 | EP0408903A2 Magnetic recording medium |
| 01/23/1991 | EP0408808A1 Magnetic transducer head structure |
| 01/23/1991 | EP0408762A1 Magnetic recording medium having balanced characteristics |
| 01/23/1991 | EP0408681A1 Magnetic recording medium and process for manufacturing it |
| 01/23/1991 | EP0408659A1 Improved mounting structure for a magnetic transducer |
| 01/23/1991 | CN1048763A Dissipator for cooling elements |
| 01/22/1991 | US4987514 Method and apparatus for preventing parasitic electrical discharges in magnetic disk drives |
| 01/22/1991 | US4987510 Thin film magnet head for vertical magnetization |
| 01/22/1991 | US4987509 Magnetoresistive head structures for longitudinal and perpendicular transition detection |
| 01/22/1991 | US4987508 Permanent magnet shaped to provide uniform biasing of a magnetoresistive reproduce head |
| 01/22/1991 | US4987507 Flexure guide for straight-line motion |
| 01/22/1991 | US4987506 Clamping mechanism for clamping a movable carriage carrying a recording/reproducing head of an information recording/reproducing apparatus |
| 01/22/1991 | US4987505 Magnetic head device having photo detector cell |
| 01/22/1991 | US4987503 Method to produce pre-recorded tape cassettes |
| 01/22/1991 | US4987502 Anti-wear disk drive system |
| 01/22/1991 | US4987501 Amplifying device |
| 01/22/1991 | US4987500 Self compensating high density data recording and detection scheme |
| 01/22/1991 | US4987355 Self-synchronizing servo control system and servo data code for high density disk drives |
| 01/22/1991 | US4987039 Magnetic recording medium |
| 01/22/1991 | US4987020 Highly oriented thermotropic magnetic recording medium |
| 01/22/1991 | US4985985 Solenoidal thin film read/write head for computer mass storage device and method of making same |
| 01/22/1991 | CA2020381A1 Protective layer for magnetic recording media |
| 01/22/1991 | CA2019868A1 Magnetic recording medium with cured surface coating |
| 01/17/1991 | DE4021438A1 Magnetic head for recording and reproduction - has main magnetic thin film together with auxiliary film to form sensing region |
| 01/17/1991 | DE3923041A1 Magnetic video tape recorder - transfers head signals via transformer without noise component |
| 01/17/1991 | DE3921856A1 Magnetic data storage medium with anisotropic magnetic layer - has intermediate layer between substrate and recording layer to enhance anisotropy, comprising conductive metal-silicon alloy |
| 01/16/1991 | EP0408343A2 Encoding device and decoding device suitable for dubbing |
| 01/16/1991 | EP0408298A2 Head gimbal flexure assembly |
| 01/16/1991 | EP0407627A1 Process for the treatment of the surface of a substrate |
| 01/16/1991 | EP0407561A1 Audio/video recorder/transceiver |
| 01/16/1991 | EP0407469A1 Process and device for non-intrusively, continuously and automatically taking, storing and supplying analysis samples and data for future evaluation. |
| 01/16/1991 | EP0407398A1 Removable cartridge disc drive with radial arm voice coil actuator |
| 01/16/1991 | EP0267281B1 Magnetic information-recording element and method of manufacture |
| 01/16/1991 | EP0181942B1 Magnetic recording/reproducing apparatus |
| 01/16/1991 | CN1048582A Piston ring assembly for stirling engine |
| 01/16/1991 | CN1048567A High magnetic conductivity wear-resistant alloys, and method for producing them |
| 01/15/1991 | US4985797 Magnetic head |
| 01/15/1991 | US4985796 Magnetic head with a tape contacting surface having a metal filled channel therein |
| 01/15/1991 | US4985795 Method and apparatus using a stationary magnetic body for effecting signal transfers between a moving magnetic core and a magnetic storage medium |
| 01/15/1991 | US4985794 Rotary drum device having a head drive with positively bonded bobbin fixing members |
| 01/15/1991 | US4985787 Magnetic recording apparatus for positioning magnetic head to track on magnetic tape |
| 01/15/1991 | US4985785 Rotary head type reproducing apparatus |
| 01/15/1991 | US4985314 Magnetic recording media binders |
| 01/15/1991 | US4985306 Glass etching |
| 01/15/1991 | US4985295 Magnetic recording medium and method for producing the same |
| 01/15/1991 | US4985273 Method of producing fine inorganic particles |
| 01/15/1991 | US4985073 Pigments |
| 01/15/1991 | US4984901 Magnetic recording disc having sector reference zone, device for reading same, and magnetooptical memory optoelectronic employing said device |
| 01/15/1991 | CA1279104C Lithographic technique using laser for fabrication of electronic components and the like |
| 01/10/1991 | WO1991000594A1 Method for compensating for the unique mechanical and electrical characteristics of a disc drive |
| 01/10/1991 | WO1991000593A1 Magnetic storage device with substrate and thin-film magnetic head |
| 01/10/1991 | DE4019658A1 Vertical axis pin motor for magnetic data disc - has rotor combined with hub supported from axis pin via facing rotary bearings |
| 01/10/1991 | CA2019318A1 Head gimbal flexure assembly |
| 01/09/1991 | EP0407244A1 Process for producing planar magnetic heads by making cells in a non-magnetic board, and magnetic heads obtained by such a process |
| 01/09/1991 | EP0407046A1 Method and apparatus for reproducing a digital video signal |
| 01/09/1991 | EP0406726A2 Magnetic recording medium and method of manufacture therefor |
| 01/09/1991 | EP0406449A1 Magnetic recording medium |
| 01/09/1991 | EP0406362A1 Process for producing a reading/recording magnetic head and magnetic head obtained thereby. |
| 01/09/1991 | EP0406302A1 Recording system having head transducers with controlled skew |
| 01/09/1991 | EP0406229A1 Magnetic head for magnetic tracks with high coercive field and fabrication method |
| 01/08/1991 | US4984224 Apparatus for recording and/or erasing an information signal on and from a magneto-optical disk wherein the magnetic biasing field means is part of a rotor magnet included in a stepping motor |
| 01/08/1991 | US4984120 Cleaning cassette for a video cassette tape deck |
| 01/08/1991 | US4984118 Flux-concentrating, non-ghosting electromagnetic read/write head |
| 01/08/1991 | US4984117 Device with read head for magnetically recorded information |
| 01/08/1991 | US4984116 Magnetic scanning device for an oblique-track tape deck |
| 01/08/1991 | US4984114 Flying head slider |