| 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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| 05/17/1977 | US4024581 Or reading, magnetic discs |
| 05/17/1977 | US4024489 Magnetoresistive sandwich including sensor electrically parallel with electrical shunt and magnetic biasing layers |
| 05/17/1977 | US4024462 Darlington configuration high frequency differential amplifier with zero offset current |
| 05/17/1977 | US4024041 Method of forming deposition films for use in multi-layer metallization |
| 05/10/1977 | US4023208 Protective coatings for a magnetic tape sensor |
| 05/03/1977 | US4021854 Miniature cassette tape recorder |
| 05/03/1977 | US4021853 Method and apparatus for the magnetic storage of digital data |
| 05/03/1977 | US4021006 Container for magnetic tape |
| 05/03/1977 | US4020999 Endless loop cartridge for video |
| 04/26/1977 | US4020506 Tape cartridge with track position indicator |
| 04/26/1977 | US4020505 Magnetic sheet player with an adjustable inclined magnetic head |
| 04/26/1977 | US4020504 Automatic magnetic record sheet copying apparatus |
| 04/26/1977 | US4020503 Still image slide with sound track control |
| 04/26/1977 | US4020475 Magnetic device operating with the photomagnetic effect |
| 04/26/1977 | US4020364 Resistance read amplifier |
| 04/26/1977 | US4020236 Oxidation-reduction reaction of salts of iron, cobalt, and nickel |
| 04/26/1977 | US4020227 Magnetic tape |
| 04/19/1977 | US4019206 Method and apparatus for magnetic recording of data with a recording head having a plurality of physically parallel, serially connectable conductors |
| 04/19/1977 | US4019205 Disc drive with rotary access mechanism |
| 04/19/1977 | US4018968 Trialkoxyethyl ester of phosphoric acid as lubricant |
| 04/19/1977 | US4018967 Polyphosphonitriles as lubricants |
| 04/19/1977 | US4018947 Method for edge marking recordable webs |
| 04/19/1977 | US4018882 Reducing a-iron oxide to magnetite then oxidizing |
| 04/19/1977 | US4018690 Process for preparing sulfur-containing ferromagnetic chromium oxide |
| 04/19/1977 | US4018303 Oil mist lubricator for metal tape |
| 04/19/1977 | US4017966 Method of manufacturing a magnetic head having a relatively large air-gap and a good resistance to mechanical wear |
| 04/19/1977 | US4017965 Method of making a transducer head with narrow core structure |
| 04/12/1977 | US4017899 Reproduce head and manufacturing method therefor |
| 04/12/1977 | US4017898 Method and apparatus for recording and reproducing video signals |
| 04/12/1977 | US4017890 Intermetallic compound layer in thin films for improved electromigration resistance |
| 04/05/1977 | US4016603 Disk storage apparatus having signals recorded in a specific format |
| 04/05/1977 | US4016601 Integrated magnetic head having pole-pieces of a reduced frontal width |
| 04/05/1977 | US4016600 Carrier for mounting pairs of magnetic heads to a drum-type tape scanning unit |
| 04/05/1977 | US4016599 Anti-shouldering read circuit for magnetic disk memory |
| 04/05/1977 | US4016057 Electrolyzing |
| 03/29/1977 | US4015291 Flying head helical scan magnetic recording device employing a lobed rotor |
| 03/29/1977 | US4015289 Video disc recording and/or reproducing apparatus with a single transducer head |
| 03/29/1977 | US4015050 Plastics film with an aluminium phosphate coating |
| 03/29/1977 | US4015042 Materials for magnetic recording having high resistance to wear and reduced abrasion on magnetic heads |
| 03/29/1977 | US4015030 Heat treatment |
| 03/29/1977 | US4014710 Iron oxide, magnetic tapes |
| 03/29/1977 | US4014141 Apparatus and method for controlling magnetic head surface formation |
| 03/22/1977 | USRE29159 Vertical record card adapter for record tape machine |
| 03/22/1977 | US4013534 Method of making a magnetic oxide film |
| 03/15/1977 | US4012791 Disk drive apparatus |
| 03/15/1977 | US4012784 Voice logging recorder including decks dedicated for both logging and recall operations |
| 03/15/1977 | US4012783 Magnetic head |
| 03/15/1977 | US4012782 Read-only integrated magnetic head |
| 03/15/1977 | US4012781 Magnetoresistive read head assembly for servo operation |
| 03/15/1977 | US4012780 Linear actuator |
| 03/15/1977 | US4012779 Linear actuator |
| 03/15/1977 | US4012778 Linear actuator |
| 03/15/1977 | US4012777 Record carrier and device for playing back same |
| 03/15/1977 | US4011692 Method of and device for grinding grooves |
| 03/08/1977 | US4011593 Magnetic tape cassette with screening shield |
| 03/08/1977 | US4011587 Rotary head magnetic recorder for use with a specific record member |
| 03/08/1977 | US4011585 Magnetic recording reproducing system |
| 03/08/1977 | US4010574 Apparatus for contouring magnetic head surfaces and method therefor |
| 03/01/1977 | US4010310 Magnetic powder |
| 02/22/1977 | US4009491 Distortionless modulation head |
| 02/22/1977 | US4009111 Iron-cobalt-chromium ferromagnetic alloy |
| 02/15/1977 | US4008493 Magnetic head structure with minimum feedthrough |
| 02/15/1977 | US4008088 Motion picture film materials containing magnetic recording stripes |
| 02/15/1977 | US4007547 Card handling teaching machine with instantaneous feedback system |
| 02/08/1977 | US4007493 Track positioning system for magnetic transducer head |
| 02/08/1977 | US4007492 Rotational speed monitor |
| 02/08/1977 | US4007490 Time lapse video tape recorder |
| 02/08/1977 | US4007314 Magnetic recording medium with silane lubricant |
| 02/08/1977 | US4007313 Magnetic recording medium |
| 02/08/1977 | US4007072 Ferromagnetic metal powder comprising lead and method for making the same |
| 02/08/1977 | US4006737 Electrocardiographic computer |
| 02/01/1977 | US4006433 Erase oscillator |
| 02/01/1977 | US4006394 Coarse and fine control for position servo |
| 02/01/1977 | US4006372 Transducer positioner |
| 02/01/1977 | US4006295 Method of detecting defects in signals corresponding to the read-out of a data carrier and system for implementing such a method |
| 02/01/1977 | US4006294 Transducer head assembly with fluid bearing and head height control system |
| 02/01/1977 | US4006090 Alpha iron (III) oxide crystals and derivatives |
| 01/25/1977 | US4005493 Method and means for moving recording heads in disc-type recorders |
| 01/25/1977 | US4005492 Transducer head positioning apparatus |
| 01/25/1977 | US4005491 Dampened transducer support apparatus for message announcing system |
| 01/25/1977 | US4005490 Magnetic disc memory |
| 01/25/1977 | US4005485 Apparatus and method for loading and unloading transducer heads |
| 01/25/1977 | US4005483 Automatic record control apparatus with multichannel memory |
| 01/25/1977 | US4005482 Asymmetric erase across a rotary transformer to a rotating magnetic head |
| 01/25/1977 | US4005242 Magnetic recording medium containing lubricants |
| 01/25/1977 | US4004917 Cobalt oxalate |
| 01/18/1977 | US4004134 Off-line magnetic card reader system operable as though normally on line |
| 01/18/1977 | US4003813 Method of making a magnetic oxide film with high coercive force |
| 01/18/1977 | US4003743 Process for production of motion picture film with sound track containing p-toluenesulfonic acid and glacial acetic acid |
| 01/18/1977 | US4003336 Device for the magnetic orientation of magnetic recording media |
| 01/11/1977 | US4003092 Reading or writing head positioning device |
| 01/11/1977 | US4003091 Transducer support and stabilizer |
| 01/11/1977 | US4003089 Electronic channel selecting system for a quad-stereo tape player |
| 01/11/1977 | US4003027 Arrangement for varying the rate of recording of information |
| 01/11/1977 | US4002804 Berthollide iron oxide |
| 01/11/1977 | US4002546 Method for producing a magnetic recording medium |
| 01/04/1977 | US4001890 Double chip flying head |
| 01/04/1977 | US4001889 Moving carriage for disk head positioner |
| 01/04/1977 | US4001888 Flexible disc recorder construction |
| 01/04/1977 | US4001887 Manual tape apparatus with generator for providing electrical power |