| 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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| 05/09/1990 | EP0367159A2 Magnetic recording medium comprising acicular alloy magnetic powder |
| 05/09/1990 | EP0367144A2 Laminated magnetic material and method of producing the same |
| 05/09/1990 | EP0367030A2 Process for forming thin films of metastable binary compounds |
| 05/09/1990 | EP0198922B1 Aircraft data acquisition and recording system |
| 05/09/1990 | EP0139008B1 Magnetic head |
| 05/09/1990 | CN2057019U Automatic measurer of nagnetic heat parameters |
| 05/09/1990 | CN1042025A Thin film of amorphous alloy |
| 05/09/1990 | CN1007940B Holo-fluorine polyester endo-oil for magnetic recording medium |
| 05/08/1990 | US4924483 Track counting circuit for use in an optical disk driver |
| 05/08/1990 | US4924338 Prolong VCR tape cassette |
| 05/08/1990 | US4924337 Disk drive servo shield |
| 05/08/1990 | US4924334 Magnetic storage device with track guidance system |
| 05/08/1990 | US4924333 Seek control apparatus and method for preventing head in a floppy disk apparatus from being outwardly moved beyond an outermost track |
| 05/08/1990 | US4924329 Rotary drum apparatus for a magnetic recording and reproducing device |
| 05/08/1990 | US4924325 Head position controlling method |
| 05/08/1990 | US4924165 Servo control system carrying out coarse control and fine control |
| 05/08/1990 | US4924160 Staggered seeking method for disk drive sector servo |
| 05/08/1990 | US4923766 Process for preparing magnetic recording |
| 05/08/1990 | US4923763 Substrate of a polymer film containing residual solvents having a ferromagnetic alloy layer |
| 05/08/1990 | US4923748 Magnetic recording medium |
| 05/08/1990 | US4923711 Irradiation polmerization, vinyl chloride alkyl acrylate interpolymer |
| 05/08/1990 | US4923574 Method for making a record member with a metallic antifriction overcoat |
| 05/08/1990 | US4923519 Magnetic iron oxide pigments and a process for their preparation |
| 05/08/1990 | US4922675 Abrasive tape |
| 05/08/1990 | CA1268857A1 Digital servo control system for a data recording disk file |
| 05/03/1990 | WO1990004846A1 Scanning unit for a magnetic disk |
| 05/03/1990 | WO1990004844A1 Method for the surface treatment of magnetic layers and magnetic layer obtained by using such method |
| 05/03/1990 | WO1990004843A1 Large capacity magnetic memory card and production method |
| 05/03/1990 | WO1990004842A1 Magnetic recording medium |
| 05/03/1990 | WO1990004570A1 Method for preparing magnetic particles of hexaferrites, particles obtainted and product containing them |
| 05/03/1990 | WO1990004522A1 High density magnetic card with one face susceptible of receiving a thermographic image |
| 05/03/1990 | DE3936519A1 Magnetic alloy layer for magnetic head - is used as interface providing high recording density performance |
| 05/02/1990 | EP0366570A1 Large capacity magnetic memory card, and manufacturing process |
| 05/02/1990 | EP0366531A2 Contact printer |
| 05/02/1990 | EP0366439A2 A magnetic disc apparatus |
| 05/02/1990 | EP0366370A2 Plate-like composite oxide fine particles containing mainly Ba and Fe, and a process for producing the same |
| 05/02/1990 | EP0366000A2 Method and arrangement to avoid read-out errors attributed to wear in a magnetic information storage device |
| 05/02/1990 | EP0365891A1 Circuit for magnetic or magneto-optical recording of data on a recording medium |
| 05/02/1990 | EP0365719A2 Preparation of doped materials containing barium or strontium and iron |
| 05/02/1990 | EP0365610A1 Method for producing rigid magnetic recording disks |
| 05/02/1990 | EP0365544A1 Forming digital data for magnetic tape |
| 05/02/1990 | CN2056782U Electronic recorder for changing the sound character of the speaker |
| 05/02/1990 | CN1041844A Order entry process for magnetically encodable film with dedicated magnetic tracks |
| 05/02/1990 | CN1041843A Implicit mid roll interrupt protection code for camera using dedicated magnetic tracks on film |
| 05/02/1990 | CN1041836A Film information exchange system using dedicated magnetic tracks on film with virtual data identifiers |
| 05/02/1990 | CN1041834A Self-clocking encoding/decoding film information exchange system using dedicated magnetic tracks on film |
| 05/01/1990 | US4922462 Reversible memory structure for optical reading and writing and which is capable of erasure |
| 05/01/1990 | US4922360 Magnetic head |
| 05/01/1990 | US4922359 Rotary head type digital audio tape recorder |
| 05/01/1990 | US4922356 Transducer supporting apparatus and disk storage unit |
| 05/01/1990 | US4922200 Apparatus for measuring the hysteresis loop of magnetic film |
| 05/01/1990 | US4921763 Soft magnetic thin film |
| 05/01/1990 | US4921729 Two-layer coating method |
| 05/01/1990 | US4921724 Process for coating a substrate with an organic coating having gradated hardness |
| 05/01/1990 | US4921670 Process for producing polyester film containing a slip agent |
| 05/01/1990 | US4921508 Method of manufacturing magnetic head |
| 05/01/1990 | US4920919 Method and device for depositing a lubricant layer to manufacture a magnetic recording medium |
| 04/26/1990 | DE3934887A1 Deposition of thin magnetic films with constant thickness - uses sputtering method in which substrates perform specified planetary motions |
| 04/26/1990 | DE3934868A1 Magnetic disc drive unit - has multiple heads on arms moved radially across disc by moving coil actuator |
| 04/25/1990 | EP0365448A2 Magnetic recording medium |
| 04/25/1990 | EP0365151A2 Limit stop in a disk drive for preventing disk damage |
| 04/25/1990 | EP0365150A2 Staggered heads for minimizing disk spacing in a disk drive |
| 04/25/1990 | EP0365092A1 Magnetic head, system comprising at least two of these magnetic heads as well as a scanning unit provided with the system |
| 04/25/1990 | EP0364986A2 Apparatus for reproducing video and audio signals |
| 04/25/1990 | EP0364961A2 Recording error detection circuit and recording/reproducing apparatus |
| 04/25/1990 | EP0364725A1 Rotating transformer for a recorder |
| 04/25/1990 | EP0364631A1 Thin film of amorphous alloy |
| 04/25/1990 | EP0364476A1 Cleaning cassette. |
| 04/25/1990 | EP0240530B1 Particulate compositions of ferromagnetic metal oxalates in the form of submicronic needle shaped particles, preparation and application thereof |
| 04/25/1990 | EP0237534B1 Surface lubricants for disc record |
| 04/25/1990 | CN1007762B Sound generator for electronic musical instrument |
| 04/24/1990 | US4920461 Broadband magnetic tape recording with compensation for bandwidth changes related to data rate |
| 04/24/1990 | US4920442 Releasable servo writing fixture connector |
| 04/24/1990 | US4920438 Magnetic head unit and method of manufacturing the same |
| 04/24/1990 | US4920434 Fixed disk drive |
| 04/24/1990 | US4920013 Magnetic Multilayer structure |
| 04/24/1990 | US4920010 Particles composed of iron compound, silicon compound layer, nonferrous transition metal layer; oxidation resistance |
| 04/24/1990 | US4919776 Formation of metal layer on the surface of metal oxide particles |
| 04/24/1990 | US4918972 Dual reference track scheme |
| 04/24/1990 | CA1268250A1 Overcoat for particulate magnetic recording disk |
| 04/24/1990 | CA1268223A1 Amplification of signals produced by a current biased magnetoresistive sensor |
| 04/19/1990 | WO1990004253A1 Self-clocking encoding/decoding film information exchange system using dedicated magnetic tracks on film |
| 04/19/1990 | WO1990004252A1 Single stage seek method |
| 04/19/1990 | WO1990004214A1 Film information exchange system using dedicated magnetic tracks on film |
| 04/19/1990 | WO1990004213A1 Photofinishing apparatus with film information exchange system using dedicated magnetic tracks on film |
| 04/19/1990 | WO1990004209A1 Order entry process for magnetically encodable film with dedicated magnetic tracks |
| 04/19/1990 | WO1990004205A1 Film information exchange system using dedicated magnetic tracks on film with virtual data identifiers |
| 04/19/1990 | WO1990004204A1 Implicit mid roll interrupt protection code for camera using dedicated magnetic tracks on film |
| 04/19/1990 | WO1990004042A1 Iron/cobalt alloy filaments |
| 04/18/1990 | EP0364263A2 Disk file including suspension assembly mounting means |
| 04/18/1990 | EP0363987A2 Organic fluorine compound |
| 04/18/1990 | EP0363924A2 Lubricant for recording media and preparation method of lubricating layer |
| 04/18/1990 | EP0363551A1 Adaptive equalization for recording systems using partial-response signaling |
| 04/18/1990 | EP0363550A1 Distance-controlled tunneling transducer and direct access storage unit employing the transducer |
| 04/18/1990 | EP0363534A1 Magnetic powder, aqueous coating material containing the same and magnetic recording medium |
| 04/18/1990 | CN1041470A Magnetic head air bearing slider |
| 04/18/1990 | CN1007667B Video tape recorder |
| 04/17/1990 | US4918557 Cleaner for magnetic head of tape recorder |
| 04/17/1990 | US4918556 Magnetic disk recording and reproducing apparatus |
| 04/17/1990 | US4918555 Magnetic head containing an Fe-base soft magnetic alloy layer |