| 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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| 06/05/1990 | US4931888 Tracking servo control for disc drive |
| 06/05/1990 | US4931887 Determining the vertical spacing |
| 06/05/1990 | US4931886 Apparatus and methods to suppress perpendicular fields in longitudinal recording |
| 06/05/1990 | US4931338 Test disk having fluorocarbon resin asperities for magnetic disk drive component testing |
| 06/05/1990 | US4931309 Uniform orientation of magnetic particles over entire area |
| 06/05/1990 | US4931198 Magnetic particles composed mainly of FeC and a process for preparing same |
| 06/05/1990 | US4931137 Submicron dimensions; anisotropic deposition |
| 06/05/1990 | US4930259 Magnetic disk substrate polishing assembly |
| 06/05/1990 | CA1269896A1 Magnetic recording medium with a chromium alloy underlayer and a cobalt-based magnetic layer |
| 06/05/1990 | CA1269895A1 Multilayered vertical magnetic recording medium |
| 06/05/1990 | CA1269894A1 Magnetic recording media with an underlayer and a cobalt-based magnetic layer |
| 05/31/1990 | WO1990005980A1 Circuit for reversing a magnetic field |
| 05/31/1990 | WO1990005976A1 High current pressure sensitive interrupters |
| 05/31/1990 | WO1990005975A1 Self-compensating high density data recording and detection scheme |
| 05/31/1990 | WO1990005961A1 Magnetic encoding apparatus and method |
| 05/31/1990 | DE3939670A1 Follower system for centre of magnetic disc tracks - has linear interpolation process to maintain head at centre of track |
| 05/31/1990 | DE3840291A1 Process and circuit arrangement for reproducing data signals |
| 05/30/1990 | EP0371006A2 Magnetic recording apparatus |
| 05/30/1990 | EP0370772A2 Digital signal reproducing apparatus |
| 05/30/1990 | EP0370670A2 Rotary head type recording apparatus |
| 05/30/1990 | EP0370566A1 Soft magnetic multilayer film and magnetic head provided with such a soft magnetic multilayer film |
| 05/30/1990 | EP0370067A1 Preparation of thin layers of iron iii oxide for optical and/or magnetic recording. |
| 05/30/1990 | CN1042556A Magnetic coating forumulations and magentic recording media |
| 05/29/1990 | US4930033 Tape cleaner and degausser apparatus |
| 05/29/1990 | US4930031 Apparatus for recording and reproducing digital signals using a helical scan |
| 05/29/1990 | US4930030 Signal recording/reproducing device |
| 05/29/1990 | US4930025 Arrangement for indicating angular position of headwheel disk in a tape recorder |
| 05/29/1990 | US4929514 Thin film media for high density longitudinal magnetic recording |
| 05/29/1990 | US4929500 Zirconium oxide protective coating |
| 05/29/1990 | US4929499 Use of nickel-phosphorous undercoat for particulate media in magnetic storage devices |
| 05/29/1990 | US4929376 Quaternary ammonium salt of an alkoxysilane as a dispersant for magnetic pigment |
| 05/29/1990 | US4928382 Method of the production of a magnetic head |
| 05/29/1990 | CA1269796A1 Fluorinated polyacrylates and polyacrylamides having a controlled cross-linking degree, and process for preparing same |
| 05/29/1990 | CA1269754A1 Apparatus for controlling a reversible tape drive in a magnetic tape player |
| 05/29/1990 | CA1269753A1 Method and means for parking read/write heads in a disc drive using the back- emf of the spindle motor to operate a stepper motor |
| 05/23/1990 | EP0369897A1 Process for the preparation of magnetic hexaferrite particles, particles obtained and product containing them |
| 05/23/1990 | EP0369896A1 Process for treating the surfaces of magnetic layers |
| 05/23/1990 | EP0369839A1 Magnetic head with saturable gap and matrix device involving a set of such heads |
| 05/23/1990 | EP0369784A2 Magnetic disk and production method thereof |
| 05/23/1990 | EP0369758A2 Rotating head apparatus |
| 05/23/1990 | EP0369226A1 Magnetic recording medium |
| 05/23/1990 | EP0369225A1 Magnetic recording medium |
| 05/23/1990 | EP0369217A2 Magnetic material, method of producing the same, and magnetic head |
| 05/23/1990 | EP0369160A2 Magnetoresistive magnetic field sensor |
| 05/23/1990 | EP0369019A1 Polyphenylene sulfide film and process for its production |
| 05/23/1990 | EP0215046B1 Copying of magnetic recordings |
| 05/23/1990 | CA2003897A1 Magnetic encoding apparatus and method |
| 05/22/1990 | US4928287 Automatic equalizer |
| 05/22/1990 | US4928196 Magnetic recording device using circumferentially offset heads with double sided media |
| 05/22/1990 | US4928195 Improved floating magnetic head for high density recording |
| 05/22/1990 | US4928192 Process for identifying disks and automatically configuring a disk drive system |
| 05/22/1990 | US4928190 Magnetic recording/reproduction apparatus |
| 05/22/1990 | US4928189 Multifunctional magnetic head cleaning media |
| 05/22/1990 | US4928188 Magnetoresistive element sandwiched between a sal ferrite substrateand a cover containing an easy axis biasing magnet |
| 05/22/1990 | US4928186 Magnetic recording method and magnetic head |
| 05/22/1990 | US4927804 Thin-film transformer and magnetic head provided with such a transformer |
| 05/22/1990 | US4927716 Surface treatment for recording media |
| 05/22/1990 | US4927665 Simultaneous multi-layer coating method for manufacturing magnetic recording medium |
| 05/22/1990 | US4927513 Sputtering |
| 05/22/1990 | CA2003195A1 Rotary head type recording apparatus |
| 05/22/1990 | CA1269455A1 Cathode ray tube degaussing control circuit |
| 05/22/1990 | CA1269234A1 Preparation of ferromagnetic chromium dioxide |
| 05/21/1990 | CA2003443A1 High current pressure sensitive interrupters |
| 05/17/1990 | WO1990005367A1 Magnetic powder, its production method, magnetic recording medium and magnetic recording method |
| 05/17/1990 | WO1990005363A1 Magnetic recording apparatus |
| 05/17/1990 | WO1990005361A1 Disk drive servo control system |
| 05/17/1990 | WO1990005280A1 Dual reference track scheme |
| 05/17/1990 | DE3838653A1 Conical store of glass for purely magnetic, magnetic-optical or structural-optical data storage and reproduction and process for producing the same |
| 05/16/1990 | EP0368497A2 Dynamic head position tracking control for a magnetic tape playback system |
| 05/16/1990 | EP0368269A2 Magnetic media containing reference feature and methods for referencing magnetic head position to the reference feature |
| 05/16/1990 | EP0368268A2 Carriage assembly for high track density flexible magnetic disk drive |
| 05/16/1990 | EP0368172A2 A magnetic recording medium |
| 05/16/1990 | EP0368093A2 Preparation of acicular ferromagnetic material essentially consisting of chromium dioxide with iron |
| 05/16/1990 | EP0367880A1 Process for producing a magnetic write/read head |
| 05/16/1990 | EP0197046B1 Flexible coating |
| 05/16/1990 | EP0137855B1 Data transfer system using digital disc |
| 05/16/1990 | CN1042264A Circuit arrangement for inverting magnetic field |
| 05/16/1990 | CN1042247A Film information exchange system using dedicated magnetic tracks on film |
| 05/16/1990 | CN1042245A Photofinishing apparatus with film information exchange system using dedicated magnetic tracks on film |
| 05/15/1990 | US4926402 Method of recording bivalent signals on opto-magnetic record medium |
| 05/15/1990 | US4926278 Magnetic tape cassette apparatus having reduced azimuth error |
| 05/15/1990 | US4926277 Structure improvement of cleaner tape cartridge for video tape recorder/player |
| 05/15/1990 | US4926276 Magnetic head having reinforcing block |
| 05/15/1990 | US4926275 Magnetic head carriage mechanism for a magnetic disk |
| 05/15/1990 | US4926274 Magnetic head apparatus having surfaces contoured to minimize friction between a magnetic head and a magnetic disk |
| 05/15/1990 | US4926273 Apparatus and method for recording and reproducing information signals |
| 05/15/1990 | US4926272 Method for controlling a rotating storage unit |
| 05/15/1990 | US4926271 Recording reproducing control circuit for recording apparatus |
| 05/15/1990 | US4926082 Superconductor devices for disk drives |
| 05/15/1990 | US4925742 Halogen contaning compound; magnetic and optical recording media |
| 05/15/1990 | US4925738 Having anodized aluminum coating with pores widened by chemical dissolution |
| 05/15/1990 | US4925733 Magnetic recording medium |
| 05/15/1990 | US4925700 Process for fabricating high density disc storage device |
| 05/10/1990 | DE3935235A1 Speicherungsverfahren fuer microcomputersysteme Storage method for microcomputer systems |
| 05/09/1990 | EP0367686A1 Magnetic card with a high recording density, one side of which can receive a thermographic image |
| 05/09/1990 | EP0367667A2 A new polyurethane resin containing at least one phosphoric acid group and its use in a magnetic coating formulation and a magnetic recording medium |
| 05/09/1990 | EP0367510A2 Apparatus and method for near contact magnetic recording |
| 05/09/1990 | EP0367440A2 Automatic head position tracking system for video signals recorded in a segmented format |
| 05/09/1990 | EP0367439A2 Magnetic heads with superconductor shields |
| 05/09/1990 | EP0367291A2 Method for magnetic orientation of magnetic recording medium and system therefor and longitudinally oriented magnetic recording medium |