| 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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| 03/28/1978 | US4081845 Magnetic recording with bias and data mixing circuit |
| 03/28/1978 | US4081756 Dual channel signal detector circuit |
| 03/28/1978 | US4081151 Stackable winding cores for magnetic tapes |
| 03/28/1978 | US4081132 Credit cards and other security documents |
| 03/21/1978 | US4080639 Adjustable assembly elements for a scanning device for magnetic tape instruments |
| 03/21/1978 | US4080636 System for damping vibrations in a deflectable transducer |
| 03/21/1978 | US4080210 Method and apparatus for preparing uniformly-sized fine particles |
| 03/21/1978 | US4079900 Driving system for miniature dictating machines |
| 03/14/1978 | US4079430 Magnetic head |
| 03/14/1978 | US4079428 Track changing mechanism for cartridge type tape players |
| 03/14/1978 | US4079426 Tape speed switching multiple track tape recorder |
| 03/14/1978 | US4079169 Cobalt base alloy as protective layer for magnetic recording media |
| 03/14/1978 | US4078300 Method of making an integrated magnetic head having pole-pieces of a reduced frontal width |
| 02/28/1978 | US4077047 Color killer enhancement in a video signal recording/playback system |
| 02/28/1978 | US4077046 System for recording and/or reproducing a video signal |
| 02/28/1978 | US4076890 Silane coupling agent |
| 02/28/1978 | US4076861 Magnetic recording substance |
| 02/21/1978 | US4075672 Magnetic recording members |
| 02/21/1978 | US4075671 Automatic ac biasing of a magnetoresistive element |
| 02/21/1978 | US4075667 Method and apparatus for aligning read/write heads in a disc recorder |
| 02/21/1978 | US4075666 Magnetic tape recorder |
| 02/21/1978 | US4075665 Method and apparatus for increasing the recording capacity of a disk |
| 02/21/1978 | US4075517 Linear actuator |
| 02/21/1978 | US4075384 Magnetic recording tapes with two-layered magnetic coating |
| 02/14/1978 | US4074331 Magnetic recording head structure for recording on both sides of a record member |
| 02/14/1978 | US4074328 Method and apparatus for recording and reproducing information on a plural-track record disk |
| 02/14/1978 | US4074326 Plural-track record disk initialization system |
| 02/14/1978 | US4074149 Peak detecting with constant fractional offset |
| 02/14/1978 | US4074016 Magnetic record carrier |
| 02/14/1978 | US4074012 Fine-metal-particle-based magnetic recording medium of improved environmental stability |
| 02/14/1978 | US4074002 Magnetic recording media having a low coefficient of friction |
| 02/14/1978 | US4073977 Stabilization of pyrophoric metal powders with alkylene oxide polymers |
| 02/14/1978 | US4073262 Apparatus for the manufacture of the magnetic coatings of magnetic disks |
| 02/07/1978 | US4072994 Read-after-write head |
| 02/07/1978 | US4072993 Multi-element magnetic head |
| 02/07/1978 | US4072990 Servo positioning system for data storage apparatus |
| 02/07/1978 | US4072986 Message synthetizer |
| 02/07/1978 | US4072957 Non-impact printing system with magnetic recording apparatus and method |
| 02/07/1978 | US4072781 Ferromagnetic metal, phosphorous, copper, lead, silicon |
| 01/31/1978 | US4071869 Assembling flexible disk record structures |
| 01/31/1978 | US4071868 Narrow track MR head with side shields |
| 01/31/1978 | US4071867 Apparatus for aligning the head-arm assemblies of a rotary actuated disc drive |
| 01/31/1978 | US4071866 Disc recorder drive follower assembly |
| 01/31/1978 | US4071865 Cassette tape recorder |
| 01/31/1978 | US4071864 Flexible recording head mounting assembly |
| 01/31/1978 | US4071863 Stationary magnetic tape transducing system with means for controlling the air bearing support |
| 01/31/1978 | US4071856 Servo-control system for signal recording and/or reproducing apparatus |
| 01/31/1978 | US4071654 Magnetic recording member |
| 01/31/1978 | US4071610 Manufacture of gamma-iron(III) oxide |
| 01/31/1978 | US4071588 Process for production of magnetite spheres with an arc heater |
| 01/31/1978 | US4071460 For phonograph record surfaces |
| 01/24/1978 | US4070522 Magnetic recording medium |
| 01/17/1978 | US4069367 Magnetic powder material comprising iron oxide particles with a copper-cobalt alloy coating |
| 01/17/1978 | US4069360 Magnetic record member and process for manufacturing the same |
| 01/17/1978 | US4069164 Process for producing ferromagnetic powder |
| 01/17/1978 | US4069073 High density recording, treatment with phosphate ion |
| 01/10/1978 | US4068302 Computer performance measurement |
| 01/10/1978 | US4068272 High sensitivity magnetic head using magneto-resistive effect element |
| 01/10/1978 | US4068270 Device to support and position a magnetic transducer |
| 01/10/1978 | US4068269 Positioning system for data storage apparatus and record medium for use therewith |
| 01/10/1978 | US4068268 Method and apparatus for writing servo-tracks on rotating magnetic memory surfaces |
| 01/10/1978 | US4068267 Magnetic disk storage apparatus in which servo track zone provides signals for both moving speed and position of transducer |
| 01/10/1978 | US4068040 Magnetic recording members |
| 01/10/1978 | US4068038 Stabilized chromium dioxide compositions |
| 01/10/1978 | US4067755 Method of making powdered magnetic iron oxide material |
| 01/10/1978 | US4067581 Stepper for slow motion disc recorder |
| 01/03/1978 | US4066565 Process for producing cobalt- and iron-containing ferromagnetic powder |
| 01/03/1978 | US4066564 Process for producing cobalt- and iron-containing ferromagnetic powder by heat-treatment in the presence of an oxidizing agent |
| 12/27/1977 | US4065801 Kit for cleaning tape cartridge playback unit |
| 12/27/1977 | US4065798 Cleaning cartridge |
| 12/27/1977 | US4065797 Multi-element magnetic head |
| 12/27/1977 | US4065544 Finely divided metal oxides and sintered objects therefrom |
| 12/20/1977 | US4064545 Magnetic coupling of disk file module |
| 12/20/1977 | US4064544 Recorder transducer mounting arrangement having a transducer holding plate movable along a mounting surface of a transducer carriage |
| 12/20/1977 | US4064408 Method and apparatus for detection of waveform peaks and slopes |
| 12/20/1977 | US4064292 Manufacture of cobalt-modified γ-iron(III)oxides |
| 12/13/1977 | US4063296 Method and means for erasing recordings on magnetic paper, particularly for distance measuring equipment |
| 12/13/1977 | US4063293 Magnetic head switching matrix with bi-directional current capability |
| 12/13/1977 | US4063000 Process for production of ferromagnetic powder |
| 12/13/1977 | US4062659 Contouring magnetic head surfaces |
| 12/06/1977 | US4062049 Integrated Disk File Module and memory storage system |
| 12/06/1977 | US4061824 Cobalt |
| 12/06/1977 | US4061727 Multistage from an iron salt and alkali metal hydroxide |
| 12/06/1977 | US4061726 Manufacture of acicular γ-iron(III) oxide |
| 12/06/1977 | US4061725 Manufacture of gamma-iron(III) oxide |
| 11/29/1977 | US4060596 Method of making goethite powder |
| 11/22/1977 | US4059716 Treating with an amine salt or quaternary ammonium compound |
| 11/15/1977 | US4058847 Or reading it |
| 11/15/1977 | US4058846 Grounded transducer for magnetic record disks |
| 11/15/1977 | US4058845 Scanning device for helical type video tape recorder |
| 11/15/1977 | US4058844 Low-mass short-stroke voice-coil actuator for integrated disk file module |
| 11/15/1977 | US4058843 Head and gimbal assembly |
| 11/15/1977 | US4058841 Or reproducing apparatus with device for recording andor reproducing control signals |
| 11/15/1977 | US4058705 Magnetic card reader |
| 11/15/1977 | US4058646 Magnetic recording media containing elastomeric polyurethane binders in the magnetic coating |
| 11/01/1977 | US4056835 Head support and eject mechanism for recording and/or playback apparatus |
| 11/01/1977 | US4056832 Servo system for controlling the position of a reading head |
| 11/01/1977 | US4056831 Thermal compensation for disk pack systems |
| 11/01/1977 | US4056830 Utilizing data for transducer positioning |
| 11/01/1977 | US4056712 Magnetic transducer |