| 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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| 04/12/1989 | EP0310682A1 Fine ferromagnetic powder for magnetic recording |
| 04/12/1989 | EP0310677A1 Polyester film |
| 04/12/1989 | EP0238663B1 Polyester film with smooth and highly adhesive surface and method of making same |
| 04/12/1989 | CN1032408A Magnetooptical recording film |
| 04/11/1989 | US4821134 Magnetic alloy R/W head with centrally pinched and end slotted core |
| 04/11/1989 | US4821133 Bottleneck magnetoresistive element |
| 04/11/1989 | US4821132 Rotary head type recording apparatus using rotary erasing head |
| 04/11/1989 | US4821131 Core assembly for a flying magnetic head with magnetic gap on air-bearing surface |
| 04/11/1989 | US4821130 Disk extender baffles |
| 04/11/1989 | US4821127 Demagnetizing apparatus for erasing signals recorded on concentric tracks |
| 04/11/1989 | US4821126 Magnetic recording method involving core pieces of different thickness |
| 04/11/1989 | US4821125 Compensation of write current adn delta-V for recording component and radial position |
| 04/11/1989 | US4821123 Magnetic recording or reproduction apparatus with erasing capability |
| 04/11/1989 | US4821012 Magnetoresistive element |
| 04/11/1989 | US4820913 Multiple card recording system |
| 04/11/1989 | US4820584 Carbon lubricant layer |
| 04/11/1989 | US4820581 Magnetic recording medium |
| 04/11/1989 | US4820565 Magnetic recording medium |
| 04/11/1989 | US4820433 Iron, cobalt, titanium oxides; high density recording |
| 04/11/1989 | CA1252283A1 Magnetic composite |
| 04/06/1989 | WO1989003112A1 Magnetic medium for longitudinal recording |
| 04/06/1989 | WO1989003111A1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording |
| 04/06/1989 | WO1989003110A1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording |
| 04/06/1989 | DE3732791A1 Head wheel arrangement for a recorder |
| 04/06/1989 | DE3732526A1 Process for preparing acicular (needle-shaped) alpha -iron(III) oxide hydroxide |
| 04/05/1989 | EP0310442A2 Digital data reproducing apparatus |
| 04/05/1989 | EP0310418A2 Magnetic recording and reproducing apparatus |
| 04/05/1989 | EP0310392A2 Magneto-optic memory medium |
| 04/05/1989 | EP0310373A2 Information recording apparatus |
| 04/05/1989 | EP0310356A2 Data reproducing apparatus |
| 04/05/1989 | EP0310323A1 Magnetic powder for high-density magnetic recording and magnetic recording medium using the same |
| 04/05/1989 | EP0310119A2 Method for positioning a magnetic head and magnetic disk driving apparatus for implementing the method |
| 04/05/1989 | EP0310031A2 Substrate for a magnetic disk and process for its production |
| 04/05/1989 | EP0310029A2 Substrate for a magnetic disk and process for its production |
| 04/05/1989 | EP0309981A2 Magnetic recording medium |
| 04/05/1989 | EP0309639A2 A method of automatically evaluating the quality of an audio-video program recorded on a recording medium |
| 04/04/1989 | US4819113 Magnetic transducer head with inclined magnetic gap |
| 04/04/1989 | US4819112 Thin film magnetic head |
| 04/04/1989 | US4819111 Thin film head with reduced cross section in the core for causing magnetic saturation in the leading leg's throat area |
| 04/04/1989 | US4819110 Disk drive head actuator and mounting arrangement therefor |
| 04/04/1989 | US4819108 Apparatus for positioning magnetic head |
| 04/04/1989 | US4819107 Magnetic transducer head structure |
| 04/04/1989 | US4819106 Head positioning assembly for magnetic disc apparatus |
| 04/04/1989 | US4819103 Apparatus for reproducing data from magnetic recording medium |
| 04/04/1989 | US4819102 Magnetic tape transfer printing apparatus |
| 04/04/1989 | US4819100 Floating head slider device for magnetic disk apparatus |
| 04/04/1989 | US4819099 Apparatus for longitudinal bidirectional recording with equal length tracks |
| 04/04/1989 | US4819097 Audio signal recording/reproducing system for use in time-lapse video tape recorder |
| 04/04/1989 | US4819096 Rotary head scanner including anamorphic beam-shaping apparatus in an optical signal-transmission channel |
| 04/04/1989 | US4819095 Method of controlling a disk head position by individually timing zones servo information |
| 04/04/1989 | US4819094 Damped magnetic head suspension assembly |
| 04/04/1989 | US4819092 Apparatus for writing signal density information on a magnetic medium |
| 04/04/1989 | US4819091 High speed magnetic disk contact recording system |
| 04/04/1989 | US4819088 Magnetic recording and reproducing system |
| 04/04/1989 | US4818781 Vinyl chloride copolymer with unsaturated carboxyl and hydroxyl group monomers |
| 04/04/1989 | US4818614 Modified powder |
| 04/04/1989 | US4818609 Packaging comprising substrate, metallic layer and antifriction film |
| 04/04/1989 | US4818608 Magnetic recording medium |
| 04/04/1989 | US4818606 With aluminum ferromagnetic powder, fatty acids and esters, carbon black |
| 04/04/1989 | CA1252243A1 Perfluoropolyether compositions which are soluble in non-fluorinated solvents |
| 04/04/1989 | CA1252207A1 Visible image magnetic card |
| 04/04/1989 | CA1252206A1 Stretched surface recording medium |
| 04/04/1989 | CA1252205A1 Method and apparatus for producing special motion effects in video recording and reproducing apparatus |
| 04/04/1989 | CA1252204A1 Positionable transducer mounting structure |
| 03/29/1989 | EP0309398A1 Cleaning cassette for a cassette tape apparatus |
| 03/29/1989 | EP0309298A2 Recording selection, high speed and high quality duplication, and royalty payment apparatus and method |
| 03/29/1989 | EP0309287A2 Data reproducing apparatus |
| 03/29/1989 | EP0309202A2 Magnetic recording medium |
| 03/29/1989 | EP0309150A2 Data reproducing apparatus |
| 03/29/1989 | EP0309022A1 Method of producing thin magnetic metallic layers having a low thermal coefficient of expansion |
| 03/29/1989 | EP0308979A2 Magnetic disc |
| 03/29/1989 | EP0308922A2 Magnetic tape memory apparatus using helical scan scheme |
| 03/29/1989 | EP0308834A2 Method for track following in a recording apparatus |
| 03/29/1989 | EP0308818A1 Process for producing connection contacts for thin film magnetic heads |
| 03/29/1989 | EP0308816A1 Process for the production of connection contacts for thin film magnetic heads |
| 03/29/1989 | EP0308537A1 Sensor for converting a distance to optical and further to electrical energy, and surface scanning apparatus using same |
| 03/29/1989 | EP0308527A1 Air bearing slider rail design and mechanical method for producing it |
| 03/29/1989 | EP0308483A1 Magneto-resistive thin film head for digital magnetic storage device. |
| 03/29/1989 | CN1032037A Method of producing thin magnetic metallic layers having low thermal coefficient of expansion |
| 03/28/1989 | US4816952 Cleaning apparatus for a tape drive machine |
| 03/28/1989 | US4816951 Device for cleaning tape contacting members in video tape recorders and the like apparatus |
| 03/28/1989 | US4816950 Magnetic structure for suppressing magnetic cross talk among rotary transducers on a common rotary disc |
| 03/28/1989 | US4816949 Computer disks |
| 03/28/1989 | US4816948 Magneto-resistive head |
| 03/28/1989 | US4816947 Single track vertical and horizontal recording read/write head design |
| 03/28/1989 | US4816946 Method of manufacturing thin film magnetic head |
| 03/28/1989 | US4816942 Spring powered transducer retractor mechanism for data transfer apparatus |
| 03/28/1989 | US4816939 Magnetic recording media and servo systems using light-transmitting optical gratings |
| 03/28/1989 | US4816938 Process for determining data disk track centers |
| 03/28/1989 | US4816935 Video floppy system |
| 03/28/1989 | US4816934 Power-saving read/write circuit for apparatus for digital data transfer with a magnetic disk |
| 03/28/1989 | US4816933 Magnetic recording medium of particular coercive force, filling ratio, and protrusions and recording/reproducing method therefor |
| 03/28/1989 | US4816932 Circuit for providing a symmetric current to the head of a magnetic recording device |
| 03/28/1989 | US4816927 Magnetic-tape apparatus, having means for optimizing tape speed |
| 03/28/1989 | US4816926 Information signal recording apparatus |
| 03/28/1989 | US4816351 Cobalt or cobalt alloy, lubricants, wear resistance |
| 03/28/1989 | US4816341 Magnetic recording medium |
| 03/28/1989 | US4816334 Magnetic recording medium |
| 03/28/1989 | US4816311 Recording medium that can be magnetized vertically and method for manufacturing same |
| 03/28/1989 | US4816292 Method of preparing hexagonal ferrite element |