Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
01/1977
01/04/1977US4001463 Process and apparatus for the manufacture of rigid magnetic discs
12/1976
12/28/1976US4000513 Apparatus and method for data recording with peak shift compensation
12/28/1976US4000336 Magnetic pigment dispersed in polyesterurethane binder
12/28/1976US3999992 Photosensitive element with antihalation layer and magnetic recording strips containing in-benzene disulfofluoride to crosslink antihalation layer
12/28/1976US3999286 Method of making multitrack heads
12/21/1976US3999216 Material for magnetic transducer heads
12/21/1976US3998989 Trifluorochloroethylene-vinyl chloride copolymer, tetrafluoroethylene telomer
12/21/1976US3998160 Magnetic ink printing method
12/14/1976US3997913 Electronic time compressor/expander utilizing magnetic storage
12/07/1976US3996615 Rotary air bearing head with leading edge controlling air bearing
12/07/1976US3996612 Test code generator
12/07/1976US3996407 Pigment, silane, binder
12/07/1976US3996395 Method of increasing the coercivity of magnetite films
12/07/1976US3996095 Epitaxial process of forming ferrite, Fe3 O4 and γFe2 O3 thin films on special materials
11/1976
11/30/1976US3995317 Helical scan apparatus for video tape or the like and having rotating-head inclination-adjustment means
11/30/1976US3995089 Magnetic recording media
11/30/1976US3994819 Oxalates
11/30/1976US3994716 Process for the production of finely divided cobalt powders
11/23/1976US3994018 Rotary head assembly having resilient positioning and restraining means mounting the head
11/23/1976US3994016 Head positioning servo system for disk drives
11/23/1976US3993846 Magnetic recording medium
11/23/1976US3993824 Recording member comprising a substrate with a magnetic lager on one surface and a lubricating lager on the opposed surface
11/16/1976US3992576 Floating device for information disc apparatus
11/09/1976US3990710 Coin-operated recording machine
11/02/1976US3990109 Multiple flexible record storage disk apparatus having an access arm with enhanced disk stabilizing features
11/02/1976US3990108 Magnetic tape speed control system
11/02/1976US3990106 Dynamic negative pressure type floating head system
10/1976
10/19/1976US3987494 Portable magnetic tape player with handle constituting magnetic tape head indexing mechanism
10/19/1976US3987490 Rotating read/write system for NRZI data
10/19/1976US3987488 Multi-tracks magnetic head with single turn winding structure
10/19/1976US3987487 Magnetic transducer with single turn winding structure
10/19/1976US3987485 Magnetic head with thin film components
10/19/1976US3987483 Magnetic recording disk and apparatus with slow motion mode
10/19/1976US3987232 Carbonic acid ester lubricants
10/19/1976US3986301 Apparatus for lapping the edges of a metal foil tape
10/12/1976US3986210 Magnetic head device using printed circuit techniques
10/12/1976US3986209 Magnetic read head with offset flux gaps
10/12/1976US3986206 Magnetic recording medium with highly anisotropic particles
10/12/1976US3986205 Dual particle population magnetic recording medium
10/05/1976US3984874 High density magnetic recording and reproducing system
10/05/1976US3984873 Head loading and unloading assembly for a magnetic disc drive having a rotary actuator
10/05/1976US3984872 Load lever re-centering device
10/05/1976US3984814 Retry method and apparatus for use in a magnetic recording and reproducing system
10/05/1976US3984763 Device for the non-destructive measurement of the remanent flux density of magnetic recording media, especially magnetic discs
10/05/1976US3984706 Electromagnetic actuator for voice coil
10/05/1976US3983622 Method of manufacturing magnetic record/reproduce head
09/1976
09/28/1976US3983579 Two-channel and four-channel cartridge tape player
09/28/1976US3983550 Aural-visual product display
09/28/1976US3983302 Magnetic recording medium
09/28/1976US3982318 Magnetic transducer head core manufacturing method
09/21/1976US3982277 Timing-error compensation for low-speed tape systems
09/21/1976US3982276 Method of copying magnetic recordings provided on a magnetizable medium having a greater coercive force before than after recording
09/21/1976US3981570 Motion picture projector device as audio-visual aid and audio-visual system using the same
09/14/1976US3980611 Silica, kaolin, china clay, an aluminosilicate, diatomaceous earth, or calcium phosphate
09/07/1976US3979775 Magnetoresistive multitransducer assembly with compensation elements for thermal drift and bias balancing
09/07/1976US3979773 Magnetic recording and reproducing apparatus
09/07/1976US3979599 Operatively interlocked electronic system
09/07/1976US3979541 Thin base self-tracking recording tape
09/07/1976US3979310 Thermal decomposition of chromium chromate, antimony
08/1976
08/31/1976US3978523 Multi-channel dual-gap magnetic head
08/31/1976US3978522 Method and apparatus for mounting a cassette record-playback head
08/31/1976US3978520 Magnetic head cleaning tape and method
08/31/1976US3977985 Magnetic recording medium comprising cobalt or cobalt alloy coated particles of spicular magnetite
08/24/1976US3977024 Or reproducing apparatus employing a rotating recording medium
08/24/1976US3976929 Device for the exact positioning of a movable part
08/24/1976US3976822 Sulfonium
08/17/1976US3975774 Method and apparatus for loading flexible magnetic recording discs to transducing heads
08/17/1976US3975773 Thin film magnetic heads
08/17/1976US3975772 Double shielded magnetorestive sensing element
08/17/1976US3975771 Magnetic head devices enclosed by a shield having superposed layers and an intervening layer of solder
08/17/1976US3975770 Transducer assembly for a disc drive
08/17/1976US3975769 Storage device utilizing flexible magnetic disks
08/17/1976US3975768 Removable cartridge flexible disc memory apparatus
08/17/1976US3975574 Magnetic coatings for credit cards
08/17/1976US3975569 Ferrite, dispersant, synthetic polymer
08/17/1976US3975217 Finely divided magnetic cobalt powder
08/17/1976US3975197 Coated aluminum substrates
08/10/1976US3974524 Magnetic storage apparatus employing flexible record disks with peripheral disk-identification means
08/10/1976US3974523 Speed invariant decoding of digital information from a magnetic tape
08/10/1976US3974079 Ferromagnetism, oxidation
08/10/1976US3973920 Magnetic recording medium
08/10/1976US3973839 Special effects generation and control system for motion pictures
08/03/1976US3973274 Method and apparatus for mounting and positioning magnetic recording heads
08/03/1976US3973273 Magnetic disk storage apparatus
08/03/1976US3973272 Disc receiver interlock for disc recorders
08/03/1976US3973183 Method and apparatus for detecting uneven magnetic field by a change in resistance of semiconductor element
08/03/1976US3973182 Method and apparatus for detecting uneven magnetic field by hall effect in semiconductor
08/03/1976US3973080 Playback device for a disc-shaped record carrier with transducer lifting for changing playback groove for fast, slow or stop effects
08/03/1976US3973072 Magnetic recording medium having binder-free phosphide coating
08/03/1976US3972620 Azimuth angle measuring apparatus
07/1976
07/20/1976US3971070 Heating means for heating a magnetic tape above its Curie point prior to duplication by contact with a master tape
07/20/1976US3971069 Thermal printing apparatus
07/20/1976US3969831 Teaching system
07/13/1976US3969771 Magnetic head with shield plates for respective head elements
07/13/1976US3969770 Two-track bidirectional cassette head for data handling apparatus
07/13/1976US3969769 Magneto-resistive head
07/13/1976US3969768 Magnetic disk head carriage
07/13/1976US3969765 Device for the thermomagnetic recording of information
07/13/1976US3968565 Method of manufacturing a device comprising a semiconductor body
07/06/1976US3968519 Amplifier with howling-preventing circuit