| Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826) |
|---|
| 04/17/1990 | US4918554 Process for making a shielded magnetoresistive sensor |
| 04/17/1990 | US4918546 Tracking control devices for video tape recorders |
| 04/17/1990 | US4917959 Condensation of m-phenylenediamine and bi-phenyl tetracarboxalic acid; cobalt-chromium magnetic layer |
| 04/17/1990 | US4917947 Magnetic recording medium |
| 04/17/1990 | US4917316 Method and apparatus for winding wire to form coil using hook |
| 04/17/1990 | US4917040 Coating apparatus for coating magnetic coating material |
| 04/17/1990 | US4916802 Etching to form groove of narrow magnetic gap |
| 04/17/1990 | CA1267987A1 Phosphorylated reaction products and compositions incorporating such products |
| 04/12/1990 | DE3834152A1 Head drum for a recorder |
| 04/11/1990 | EP0363256A1 Method of making electrical connections through a substrate |
| 04/11/1990 | EP0363152A2 High speed tape duplicating machine |
| 04/11/1990 | CN2055976U Reverse magnetic head assembly construction for automatic reverse recorder |
| 04/11/1990 | CN1007558B Magnetic head holding device for recorder |
| 04/10/1990 | US4916680 Magnetooptic recording member having selectively-reversed erasure directions in predetermined recording areas of the record member |
| 04/10/1990 | US4916564 Cleaning apparatus for a disc drive |
| 04/10/1990 | US4916563 Magnetic head and method for the production thereof |
| 04/10/1990 | US4916562 Magnetic disk storage equipment |
| 04/10/1990 | US4916557 Method of sharing various types of medium drives and recording/reproduction apparatus with medium controller for realizing the method |
| 04/10/1990 | US4916555 Method and apparatus for producing time base altered effects in data recording and reproducing apparatus |
| 04/10/1990 | US4916342 Rotary actuator |
| 04/10/1990 | US4916024 Magnetic recording medium |
| 04/10/1990 | US4916021 Radiation cured binders internetworked with soft materials |
| 04/10/1990 | US4915728 Iron/cobalt alloy filaments |
| 04/10/1990 | US4915710 Abrasive composition and process for polishing |
| 04/10/1990 | US4914868 Lapping control system for magnetic transducers |
| 04/10/1990 | US4914805 Method of manufacturing a magnetic head having a plurality of magnetic gaps |
| 04/10/1990 | EP0279843A4 Surface lubricants for recording surface and method of reducing their depletion. |
| 04/05/1990 | WO1990003644A1 Fault tolerant index patterns and decoding means |
| 04/05/1990 | WO1990003643A1 Bias field switching system for magneto-optic disk drive |
| 04/05/1990 | WO1990003641A1 Thin-film magnetic head with flat write/read wire-wound coil |
| 04/05/1990 | WO1990003408A1 Improved process for manufacture of polyethylene terephthalate film containing slip additive |
| 04/05/1990 | DE3932678A1 Fast search device for video cassette tape recorder - reduces length of tape in frictional contact to minimise risk of damage during high-speed movement |
| 04/04/1990 | EP0362072A2 A mechanism for suspending a head slider of a recording apparatus |
| 04/04/1990 | EP0361809A2 Method of producing head core slider for rigid magnetic disk drive utilizing laser-induced etching |
| 04/04/1990 | EP0361804A2 Apparatus for recording and/or reproducing information signals |
| 04/04/1990 | EP0361786A2 Disk file digita servo control |
| 04/04/1990 | EP0361781A2 Protective circuit for magnetoresistive element |
| 04/04/1990 | EP0361778A1 Lapping control in the manufacture of magnetic transducers |
| 04/04/1990 | EP0361698A1 Carbon-containing magnetic metal powder |
| 04/04/1990 | EP0361658A1 Magnetic recording apparatus with magnetic head air bearing slider |
| 04/04/1990 | EP0361657A2 A process for making a shielded magnetoresistive sensor |
| 04/04/1990 | EP0361488A2 Magnetic disk apparatus having a circuit for detecting the position of servo information recorded on a magnetic disk |
| 04/04/1990 | EP0361483A1 Aluminum alloy for magnetic disc substrate excellent in platability |
| 04/04/1990 | EP0361451A1 Process for producing a thin alloy film having high saturation magnetic flux density |
| 04/04/1990 | EP0361381A2 Actuator velocity control system for moving a magnetic head in a magnetic disk unit and a magnetic disk unit with said system |
| 04/04/1990 | EP0361349A2 Magnetic fine particles of epsilon' iron carbide |
| 04/04/1990 | EP0361346A2 Fluoroalkyl ether, surface modifying composition and method for modifying surface |
| 04/04/1990 | EP0361222A2 An automatic servo gain calibration system for a disk drive |
| 04/04/1990 | EP0361167A1 Coating apparatus |
| 04/04/1990 | EP0360978A2 A thin film magnetic head for perpendicular recording and reproducing |
| 04/04/1990 | CN1007466B Magnetic tape recording and/or reproducing apparatus with recorded channel indicator |
| 04/03/1990 | US4914726 Mass velocity controller |
| 04/03/1990 | US4914656 Disk drive memory |
| 04/03/1990 | US4914644 Disk file digital servo control system with coil current modeling |
| 04/03/1990 | US4914538 Spaced electroconductive lead structure |
| 04/03/1990 | US4914537 Magnetic head device having a bridge core |
| 04/03/1990 | US4914532 Method of efficiently erasing data in accordance with type of magnetic recording medium and apparatus for realizing the same |
| 04/03/1990 | US4914528 Detection of a synchronizing signal in a magnetic recording/reproducing apparatus |
| 04/03/1990 | US4914398 Method and circuitry to suppress additive disturbances in data channels containing MR sensors |
| 04/03/1990 | US4914369 Disc drive with improved storage capacity |
| 04/03/1990 | US4914248 Diene polymers, process for production, thereof, and rubber compositions containing same |
| 04/03/1990 | US4913959 Magnetic recording medium |
| 04/03/1990 | US4913933 Method for preparing magnetic recording medium |
| 04/03/1990 | US4913890 Heating precipitated iron/iii/ hydroxide and complexing agent as unfiltered aqueous suspension |
| 04/03/1990 | US4913063 Thermostable iron oxide pigments, processes for their preparation and their use |
| 04/03/1990 | US4912883 Lapping control system for magnetic transducers |
| 03/29/1990 | DE3832398A1 Method of coding magnetic tape |
| 03/28/1990 | EP0360207A2 Servo data for a magnetic data recording medium |
| 03/28/1990 | EP0360175A2 Magnetic recording medium |
| 03/28/1990 | EP0360055A1 Soft-magnetic film having high saturation magnetic-flux density and magnetic head utilizing the same |
| 03/28/1990 | EP0359879A1 Magnetic head for perpendicular magnetic recording system |
| 03/28/1990 | EP0359777A1 Process for etching with gaseous plasma. |
| 03/27/1990 | USRE33187 Stable stretched surface recording medium |
| 03/27/1990 | US4912585 Discrete track thin film magnetic recording disk with embedded servo information |
| 03/27/1990 | US4912584 Method for fabricating magnetic recording poles |
| 03/27/1990 | US4912583 Clamp for mounting head-load beam slider arm in a disk drive |
| 03/27/1990 | US4912582 Floppy disk drive system with improved record/playback heads |
| 03/27/1990 | US4912576 Method for writing a servo pattern |
| 03/27/1990 | US4912573 Digital data reproducing apparatus having recording modulation mode detection |
| 03/27/1990 | US4912572 Magnetic disk drive with effective AGC control of servo signals by selectively varying A/D converter reference level |
| 03/27/1990 | US4912312 Optical card duplicating system |
| 03/27/1990 | US4912252 Synthetic lubricant for lubricating thin film and magnetic recording medium |
| 03/27/1990 | US4911997 Ferromagnetic multilayer structure |
| 03/27/1990 | US4911967 Substrate for magnetic disk memory and production process |
| 03/27/1990 | US4911951 Ferromagnetic powder dispersed in binder on nonmagnetic support |
| 03/27/1990 | US4911950 Method of smoothing magnetic film |
| 03/27/1990 | US4910862 Method for producing a magnetic transducer including a plurality of heads |
| 03/27/1990 | CA1267220A1 Multi-channel magnetic transducer head utilizing magnetoresistance effect |
| 03/27/1990 | CA1267047A1 Methods and arrangements for characterizing magnetic coating compositions as well as improving magnetic particle dispersions |
| 03/22/1990 | WO1990003031A1 Recording/reproducing apparatus |
| 03/22/1990 | WO1990003030A1 Magnetic head and disc tester |
| 03/22/1990 | WO1990003029A1 Rotating positioning device for magnetic disk memories |
| 03/22/1990 | WO1990003028A1 Process for collectively obtaining the profile on magnetic heads |
| 03/22/1990 | DE3931374A1 Magnetic disc system and head unit - with coil windings embedded in insulator to provide high track density and good signal to noise ratio |
| 03/22/1990 | DE3832104A1 Magnetic head arrangement |
| 03/22/1990 | DE3831803A1 Duennfilm-magnetkopf mit einer flachen schreib-/lesepulenwicklung Duennfilm-magnet with a flat head read / lesepulenwicklung |
| 03/22/1990 | DE3831527A1 Circuit arrangement for the voice recording of a broadband signal onto magnetic tape |
| 03/21/1990 | EP0359511A2 Method of magnetic particle treatment and resulting recording media |
| 03/21/1990 | EP0359510A2 Magnetic particle coating compositions and recording media |
| 03/21/1990 | EP0359364A2 A rigid transparent disk for testing sliders and a method of forming the same |