| 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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| 06/30/1981 | US4276183 Cobalt modified magnetic iron oxide |
| 06/30/1981 | CA1104247A1 Recording and playback method and apparatus |
| 06/24/1981 | EP0030858A1 Method and apparatus for fabricating flexible recording discs with improved thermal and hygroscopic stress characteristics |
| 06/24/1981 | EP0030690A1 Method and device for testing the trueness of record carriers protectable against falsification |
| 06/24/1981 | EP0030645A2 Magnetic head arm assembly |
| 06/24/1981 | EP0030644A1 Magnetic recorders |
| 06/24/1981 | EP0030634A1 Nickel-X/gold/nickel-X conductors for solid state devices |
| 06/24/1981 | EP0030625A2 Ferrite core magnetic head assembly |
| 06/24/1981 | EP0030623A1 Methods of fabricating magnetic records, magnetic records so fabricated, and magnetic recording and reproducing apparatus comprising such fabricated magnetic records |
| 06/23/1981 | US4275428 Multitrack magnetic reading head |
| 06/23/1981 | US4275427 Transducer positioning apparatus |
| 06/23/1981 | US4275424 Scanning type magnetic recorder and cassette |
| 06/23/1981 | US4275115 Magnetic recording composition and article coated therewith |
| 06/23/1981 | US4275114 Magnetic recording medium and method of stabilization of chromium dioxide magnetic pigments |
| 06/23/1981 | US4275113 Magnetic recording medium |
| 06/23/1981 | US4275108 Leader or trailer tape for a magnetic tape |
| 06/23/1981 | CA1103801A1 Kit for cleaning tape cartridge playback unit |
| 06/23/1981 | CA1103800A1 Magnetic head and method for manufacturing the same |
| 06/17/1981 | EP0030469A2 Video tape recorder including tracking apparatus |
| 06/17/1981 | EP0030301A2 Magnetic-recording method and apparatus; magnetic record medium produced by such method and method of using such record medium |
| 06/17/1981 | EP0030300A1 Magnetic data recorder circuit and method of operating magnetic data recorders |
| 06/17/1981 | EP0030256A1 Buried servo track data recording systems |
| 06/16/1981 | US4274120 Information recording methods and apparatus |
| 06/16/1981 | US4274118 System for the recording and play-back of video signals |
| 06/16/1981 | US4274116 Tape recorder |
| 06/16/1981 | US4273797 Method of detecting pinholes in a magnetic recording medium |
| 06/16/1981 | US4273603 Process for transfer of a magnetic layer from a temporary to a permanent support |
| 06/16/1981 | CA1103350A1 R/w arm that prevents catastrophic failure |
| 06/16/1981 | CA1103098A1 Magnetic record carrier |
| 06/10/1981 | EP0029888A1 Method of producing a conductive wire |
| 06/09/1981 | US4272796 Automatic cassette cleaner |
| 06/09/1981 | US4272795 Information storage system and recording cartridge having precise alignment features |
| 06/09/1981 | US4272793 System and method for positioning a magnetic head transducer on a flexible storage media |
| 06/09/1981 | US4272602 Photographic films with different surface roughness |
| 06/09/1981 | US4272600 Magnetic toners containing cubical magnetite |
| 06/09/1981 | US4272563 Manufacture of magnetic recording media having a wear-resistant surface |
| 06/09/1981 | US4271782 Apparatus for disorienting magnetic particles |
| 06/09/1981 | CA1102922A1 Forming electrically insulating layers |
| 06/09/1981 | CA1102781A1 Protective compositions for recording |
| 06/03/1981 | EP0029730A1 Head load/unload mechanism for rotating magnetic memories, particularly floppy disk drives |
| 06/03/1981 | EP0029687A1 Process for stabilizing ferromagnetic chromium dioxide |
| 06/03/1981 | EP0029550A1 Multichannel magnetic head, apparatus using such a head and manufacturing method for such a head |
| 06/03/1981 | EP0029458A1 Isolated multiple core magnetic transducer assembly |
| 06/02/1981 | US4271442 Plane magnetic recording medium |
| 06/02/1981 | US4271234 Iron oxide magnetic pigments for the production of magnetic coatings |
| 06/02/1981 | US4271232 Amorphous magnetic film |
| 06/02/1981 | US4270854 Photographic instant camera with magnetic recording capability |
| 06/02/1981 | CA1102449A1 Automated recording tape cartridge retrieval, handling and replay machine |
| 06/02/1981 | CA1102183A1 Method of producing magnetic thin film |
| 05/26/1981 | US4270155 Transducer positioning apparatus |
| 05/26/1981 | US4270154 Head selection technique |
| 05/26/1981 | US4270153 Optical control system for transducer positioning apparatus |
| 05/26/1981 | US4270152 Magnetic tape reproduction device |
| 05/26/1981 | US4270073 Position control in disk drive system |
| 05/26/1981 | US4269739 Solutions or emulsions containing a wax, a silicone oil lubricant, a polysiloxane surfactant, a fluoro-containing surfactant, and a nonionic surfactant; television and audio devices; antistatic agents |
| 05/20/1981 | EP0028767A1 Process for producing gamma-ferric (III) oxide and its use in producing magnetic record carriers |
| 05/20/1981 | EP0028708A1 Cleaning cassette for cassette recorder |
| 05/19/1981 | US4268882 Magnetic erasing head |
| 05/19/1981 | US4268881 Azimuth adjusting device for magnetic head |
| 05/19/1981 | US4268880 Magnetic head assembly |
| 05/19/1981 | US4268879 Suspension for air bearing head arm assembly |
| 05/19/1981 | US4268876 Magnetic reproducing device |
| 05/19/1981 | US4268875 Avoidance of disturbance of horizontal sync signals in video signal reproduced at other than standard tape speed |
| 05/19/1981 | US4268874 Transducer deflection apparatus for use in a video signal reproducing device |
| 05/19/1981 | US4268873 Servo circuit for rotary heads of a video tape recorder |
| 05/19/1981 | US4268785 Transient overshoot, undershoot and delay compensation circuit in systems comprising reactive filter networks |
| 05/19/1981 | US4268584 Nickel-X/gold/nickel-X conductors for solid state devices where X is phosphorus, boron, or carbon |
| 05/19/1981 | US4268556 Rigid magnetic recording disks lubricated with fluorinated telechelic polyether |
| 05/19/1981 | US4268540 Ferric oxide coated with barium oxide |
| 05/19/1981 | US4268369 Over cobalt, cobalt-nickel or cobalt-nickel-phosphorus |
| 05/19/1981 | US4268302 Method of producing acicular metal crystals |
| 05/14/1981 | WO1981001342A1 Digitally controlled automatic bias circuit for magnetic recording |
| 05/13/1981 | EP0028549A1 Filters tuned by switching, and their use in an equalizer of a magnetic recording device |
| 05/12/1981 | US4267238 Flexible magnetic recording media lubricated with fluorinated telechelic polyether polymer |
| 05/12/1981 | US4267207 Process for producing cobalt-containing ferromagnetic iron oxide powder |
| 05/12/1981 | US4267206 Process of making high-temperature magnetic tape |
| 05/12/1981 | US4267203 Manufacture of magnetic recording media |
| 05/12/1981 | CA1101120A1 Magneto-resistive reading head |
| 05/12/1981 | CA1101119A1 Multiple pack magnetic disk system |
| 05/06/1981 | EP0028177A1 Integrated magnetic transducer |
| 05/05/1981 | US4266256 Cleaner ribbon for magnetic tape |
| 05/05/1981 | US4266255 Capstan drive system for driving tape record media, and having internally mounted transducer head means |
| 05/05/1981 | US4266204 Delay line signal equalizer for magnetic recording signal detection circuits |
| 05/05/1981 | US4265931 Process for the production of a magnetic recording member |
| 05/05/1981 | CA1100630A1 Head assembly for magnetic recorders |
| 05/05/1981 | CA1100629A1 Grounded transducer for magnetic record disks |
| 05/05/1981 | CA1100628A1 Corrosion resistant thin film head assembly and method for making |
| 05/05/1981 | CA1100609A1 Positioning system employing feedforward and feedback control |
| 04/29/1981 | EP0027640A1 Process for producing ferromagnetic chromium dioxide, and its use in producing magnetic recording carriers |
| 04/29/1981 | EP0027547A1 Data signal detection apparatus |
| 04/28/1981 | US4264939 Magnetic erasing head |
| 04/28/1981 | US4264938 Magnetic head for a tape player |
| 04/28/1981 | US4264935 Balanced tapped delay line spectral shaping differentiation circuit for signal detection |
| 04/28/1981 | US4264462 For use in magnetic tapes |
| 04/28/1981 | CA1100234A1 Channel depletion boundry modulation magnetic field sensor |
| 04/28/1981 | CA1100230A1 Apparatus and method for reproducing video signals |
| 04/22/1981 | EP0027255A1 Magnetic recording medium |
| 04/21/1981 | US4263633 Combined magnetic tape head |
| 04/21/1981 | US4263632 Vibration damper for a transducer carriage drive mechanism for use in a diskette system |
| 04/21/1981 | US4263630 Uniformly loaded opposite magnetic transducer assembly |