| 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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| 08/29/1978 | US4110804 Read/write and tunnel erase magnetic head assembly |
| 08/29/1978 | US4110802 Crash stop for disc drive actuator |
| 08/29/1978 | US4110799 Servo system for controlling the position of a magnetic head relative to a track to be followed using periodically interrupted long-wave positioning signals |
| 08/29/1978 | US4110797 Magnetic recording reproducing apparatus with field generating means within the copy medium |
| 08/29/1978 | US4110503 Magnetic recording members |
| 08/22/1978 | US4109287 Aluminum or alloy |
| 08/22/1978 | US4109046 Flexible multi-layer magnetic recording media |
| 08/22/1978 | US4108787 Neutralizing a ferrous salt to form ferrous hydroxide, oxidizing |
| 08/22/1978 | US4108365 Coin-operated recording machine |
| 08/15/1978 | US4107752 High density magnetic storage disc comprising a spiral of magnetic tape |
| 08/15/1978 | US4107751 Magnetic head |
| 08/15/1978 | US4107750 Track change-over mechanism for a multi-channel tape recorder |
| 08/15/1978 | US4107748 Recording head support assembly |
| 08/15/1978 | US4107746 Continuous spiral mode tracking in a conventional disk drive using concentric servo tracks |
| 08/15/1978 | US4107385 Reaction product of boric acid with a polyhydric alcohol as friction-reducing additive |
| 08/15/1978 | US4106173 Method of manufacturing magnetic heads |
| 08/15/1978 | CA1036503A1 Special effects generation and control system for motion pictures |
| 08/08/1978 | US4106067 Magnetic head cleaning jacket |
| 08/08/1978 | US4106065 Drive circuitry for controlling movable video head |
| 08/01/1978 | US4104513 Magnetic recording |
| 08/01/1978 | US4104436 Magnetic head cleaning article |
| 07/25/1978 | US4103315 Antiferromagnetic-ferromagnetic exchange bias films |
| 07/25/1978 | US4103314 Motion control system |
| 07/25/1978 | US4102756 Nickel-iron (80:20) alloy thin film electroplating method and electrochemical treatment and plating apparatus |
| 07/25/1978 | US4102569 Sound slide |
| 07/18/1978 | US4101947 Narrow track magnetic-head recorder |
| 07/18/1978 | US4101946 Tape playing machine with movable head mount |
| 07/18/1978 | US4101942 Track following servo system and track following code |
| 07/18/1978 | US4101941 Automatic tape run-reversing device |
| 07/18/1978 | US4101938 Apparatus for reproducing high fidelity magnetic tapes from a master tape |
| 07/18/1978 | US4101937 Automatic azimuth control for magnetic tape recording and reproducing apparatus |
| 07/18/1978 | US4101348 Aluminum, silicon, iron |
| 07/18/1978 | US4101311 Reducing agents |
| 07/18/1978 | US4100872 Slurry vessel |
| 07/18/1978 | US4100643 Magnetic tape sensing head cleaner |
| 07/11/1978 | US4100584 Transducer head with narrow core structure |
| 07/11/1978 | US4100583 Thin-film magnetic head for reading and writing information |
| 07/11/1978 | US4100575 Method of and apparatus for modifying a video signal to prevent unauthorized recording and reproduction thereof |
| 07/11/1978 | US4100326 Method for treating a magnetic recording medium |
| 07/04/1978 | US4099212 Rotating transducing head assembly |
| 07/04/1978 | US4099211 Positionable transducing mounting structure and driving system therefor |
| 07/04/1978 | US4099210 Rotating transducing head assembly |
| 07/04/1978 | US4099112 Method and means for seeking magnetic tracks |
| 07/04/1978 | US4098605 Ferromagnetic palladium alloys |
| 07/04/1978 | US4098032 Method of forming air bearing rails of head assemblies |
| 06/27/1978 | US4097910 Single gap magnetic read head |
| 06/27/1978 | US4097909 Magnetic transducer with inner and outer magnetic medium cooperating surface zones of different convexity |
| 06/27/1978 | US4097908 Method for inspecting the skew of a magnetic head, for selectively locating a lead screw and an apparatus therefor |
| 06/27/1978 | US4097802 Magnetoresistive field sensor with a magnetic shield which prevents sensor response at fields below saturation of the shield |
| 06/27/1978 | US4097650 Magnetic recording medium |
| 06/20/1978 | US4096579 Velocity control apparatus for disk drive |
| 06/20/1978 | US4096537 Lead screw support for a disc recorder |
| 06/20/1978 | US4096535 Rotary transformer with unique physical and electrical characteristics |
| 06/20/1978 | US4096534 Track accessing circuitry for a disk file with switchable filter |
| 06/20/1978 | US4096532 Magnetic tape copying method and apparatus |
| 06/20/1978 | US4096292 Process for preparing ferrimagnetic acicular ferric oxide |
| 06/20/1978 | US4096109 Polyester films useful as magnetic tapes |
| 06/06/1978 | US4093966 Adjustable holder particularly useful for mounting magnetic heads |
| 06/06/1978 | US4093965 Speed-switchable readback signal equalization and direct-current restoration |
| 06/06/1978 | US4093885 Transducer assembly vibration sensor |
| 06/06/1978 | US4093688 Heat treating a compressed body of iron, manganese, and zinc oxides |
| 05/30/1978 | US4092688 Multi-track thin film magnetic head |
| 05/30/1978 | US4092683 Dual-mode demodulator for movement of a servo head |
| 05/30/1978 | US4092682 Cross coupled demodulator for generating a servo head position error signal |
| 05/30/1978 | US4092681 Flexible disk file access mechanism |
| 05/30/1978 | US4092678 Bias setting method for magnetic recording-reproducing apparatus |
| 05/30/1978 | US4092439 Process for obtaining chromium dioxide CrO2 |
| 05/30/1978 | US4092256 Magnetic coating compositions |
| 05/30/1978 | US4091924 Thermally resistant magnetic tape enclosed in protective container |
| 05/23/1978 | US4091429 Device for the magnetic recording by means of a magnetic strip domain as a recording/playback head |
| 05/23/1978 | US4091428 Rotary head assembly |
| 05/23/1978 | US4091427 Electric control system for magnetic sheet recording and reproducing apparatus for audiovisual instruction |
| 05/23/1978 | US4091168 Leader for magnetic recording tape having coextensive flexible layers with metal laminated therebetween |
| 05/23/1978 | US4091158 Magnetic recording members |
| 05/23/1978 | US4091143 Magnetic recording media |
| 05/23/1978 | US4090662 Tamperproof magnetically readable label |
| 05/16/1978 | US4090003 Card, release sheet, magnetic tape |
| 05/09/1978 | US4089029 Data storage apparatus using a flexible magnetic disk |
| 05/02/1978 | US4087843 Positioning device for the access arm of the magnetic head of a magnetic disk storage |
| 05/02/1978 | US4087842 Recording track eccentricity compensation method and means |
| 05/02/1978 | US4087582 Magnetic recording medium |
| 04/25/1978 | US4086659 Control system for disk drive |
| 04/25/1978 | US4086644 Magnetic tape sensing head demagnetizer |
| 04/25/1978 | US4086639 Magnetic head which minimizes the effect of minute variations in the head gap |
| 04/25/1978 | US4086638 Device for fitting a magnetic head of a tape recorder |
| 04/25/1978 | US4086637 Method and apparatus for loading flexible magnetic recording discs to transducing heads |
| 04/25/1978 | US4086636 Restore method and apparatus for disk drive |
| 04/25/1978 | US4086634 Method and apparatus for preparing recorded program material to prevent unauthorized duplication by magnetic tape recording |
| 04/25/1978 | US4086174 Cobalt modified acicular γ ferric oxide and process for preparing the same |
| 04/18/1978 | US4085430 Thin film magnetic head with a gap formed between a loop shaped core part and a bridging core part |
| 04/18/1978 | US4085429 Magnetic head having optimum spacer thickness disposed between dummy and write-in core segments |
| 04/18/1978 | US4085428 Apparatus for recording and reproducing information with respect to a flexible recording medium |
| 04/18/1978 | US4085427 Transducer positioning system |
| 04/18/1978 | US4085383 Matrix selection amplifier circuit for low impedance heads in a magnetic disc memory device |
| 04/11/1978 | US4084201 Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control |
| 04/11/1978 | US4084199 High density multitrack magnetic head |
| 04/04/1978 | US4082905 Insoluble inorganic coating |
| 03/28/1978 | US4081848 Head carrier providing independent protrusion adjustment |
| 03/28/1978 | US4081847 Rotary head assembly |
| 03/28/1978 | US4081846 Magnetic head-slider assembly |