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| Number | Title | Issue Date |
| 6893511 | Production method for semirigid magnetic material and semirigid material and magnetic marker using it The invention relates to a semi-hard magnetic material having rectangular hysteresis loop and superior magnetization steepness and a method of producing a bias material preferably used for a magnetic marker. This method comprises the steps of preparing a multilayer ... | 05/17/2005 |
| 6853521 | Exchange coupling film having improved wettability of seed layer A seed layer is formed with a Cr layer in which the direction of a crystal face in at least one crystal grain is oriented in a different direction from the direction of an equivalent crystal face in another crystal grain. Consequently, wettability of the seed layer ... | 02/08/2005 |
| 6841224 | Method of patterning magnetic products using chemical reactions A method of patterning magnetic material includes forming a ferromagnetic material layer containing one element selected from the group consisting of Fe, Co and Ni on a substrate, selectively masking a surface of the ferromagnetic material layer, and making nonferro... | 01/11/2005 |
| 6838188 | Magnetic recording medium having ternary or quaternary alloy seedlayer A magnetic recording medium such as a magnetic disk includes a NiP or ceramic glass substrate on which a seedlayer is sputtered in a low pressure inert gas atmosphere, the seedlayer comprising a ternary or quaternary alloy formed from a B2 lattice type alloy ... | 01/04/2005 |
| 6830824 | Magnetic recording medium with multiple magnetic layers capable of being exchange coupled at elevated temperatures and magnetic recording apparatus A magnetic recording medium has a substrate, a base layer formed on the substrate and including a magnetic material, a switching layer formed on the base layer and including a nonmagnetic material, and a recording layer formed on the switching layer and having a str... | 12/14/2004 |
| 6829121 | Magnetoresistive element, memory element having the magnetoresistive element, and memory using the memory element A magnetoresistive film includes a nonmagnetic film, and a structure in which magnetic films are formed on the two sides of the nonmagnetic film. At least one of the magnetic films is a perpendicular magnetization film. A magnetic film whose easy axis of magnetizati... | 12/07/2004 |
| 6821642 | Magneto-optical recording medium with first and second magnetic layers with almost equal Curie temperatures A magneto-optical recording medium includes at least three magnetic layers of a first magnetic layer, a second magnetic layer and a third magnetic layer, in which a recording mark recorded in the third magnetic layer by irradiation of a light beam is transferred thr... | 11/23/2004 |
| 6794057 | Laminated antiferromagnetically coupled media for data storage A configuration for laminated antiferromagnetically coupled magnetic recording layers for a magnetic recording medium is described. For this purpose, a stabilization layer (top layer) is put on top of the main magnetic recording layer (middle layer) and another stab... | 09/21/2004 |
| 6793993 | Fire resistant polymeric film and insulation assembly A fire resistant resilient insulation assembly, includes: a resilient insulation and a fire resistant polymeric film forming a tubular envelope surrounding the resilient insulation. The fire resistant polymeric film includes: 50 to 80 weight percent high density pol... | 09/21/2004 |
| 6780524 | In-situ oxidized films for use as gap layers for a spin-valve sensor and methods of manufacture Disclosed is a spin-valve sensor disposed between first and second gap layers and formed of one or more in-situ oxidized films. The improved spin valve sensor helps eliminate electrical shorting between the spin-valve sensor and shield layers. A fabrication method o... | 08/24/2004 |
| 6777078 | Magnetic recording medium with L10 crystal grains including three or more elements A magnetic recording medium has a substrate, an underlayer formed on the substrate, a magnetic layer formed on the underlayer and including crystal grains having an L10 structure mainly including Fe and Pt, mainly including Fe and Pd, or mainly including ... | 08/17/2004 |
| 6773782 | Magnetic memory medium having a magnetic film laminated on a substrate and a non-magnetic film formed thereon, and method of manufacturing the same The surface of a disk medium includes a substrate whose surface includes grooves and lands. A non-magnetic underlayer and a magnetic recording layer are formed on the substrate. Smoothing non-magnetic film fills the grooves, which are covered with the non-magnetic u... | 08/10/2004 |
| 6773826 | Perpendicular magnetic recording media and magnetic storage apparatus using the same A perpendicular magnetic recording medium and a magnetic storage apparatus, which show an excellent S/N ratio and are suitable for ultra high density magnetic recording, are provided. In the perpendicular magnetic recording medium having a recording layer composed o... | 08/10/2004 |
| 6770223 | Article comprising a faraday rotator that does not require a bias magnet Faraday rotator garnet thick films have improved specific Faraday rotations without requiring a bias magnet. Films of nominal composition BiX(EuZHo1-Z)3-XFe5-YGaYO12 are grown lattice match... | 08/03/2004 |
| 6767697 | Magneto-optical disk and method for producing same by initializing with a laser having a predetermined wavelength A magneto-optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from the substrate side. The optical disk further includes a first di... | 07/27/2004 |
| 6765757 | Soft magnetic film having high saturation magnetic flux density, thin-film magnetic head using the same, and manufacturing method of the same A soft magnetic film is formed of a CoFe alloy having an Fe content in the range of 68 to 80 mass %, thereby having a saturation magnetic flux density of 2.0 T or more. The center lain average roughness of the film surface is 9 nm or less. The soft magnetic film can... | 07/20/2004 |
| 6765755 | Anti-abrasive reading head A magnetooptic read head including a magnetooptic transducer with a multilayer structure with at least one thin magnetic layer with a magnetooptic effect, at least one layer made of nonmagnetic material and having a predetermined wear coefficient, and a layer with g... | 07/20/2004 |
| 6759136 | Rubber laminate and pneumatic tire using the same A rubber laminate strengthening the bonding strength at a high temperature and under high strain by adjusting the formulation of the bonding rubber arranged between a hydrogenated NBR composition and general diene-based rubber. ... | 07/06/2004 |
| 6759138 | Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer In a magnetic recording medium which includes a base body (1-4), first and second magnetic layers (5 and 7), each being of a ferromagnetic material, and a spacer layer (6) formed between the first and the second magnetic layers for... | 07/06/2004 |
| 6759137 | Opto-magnetic recording medium with a garnet ferrite recording layer, and opto-magnetic information recording/reproducing device This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record and play back data using the magneto-optical recording media. The mag... | 07/06/2004 |
| 6746749 | Magnetic recording disk The magnetic recording medium includes an underlayer 12 formed of an inorganic compound layer, and a magnetic layer 13 formed over the underlayer 12. The inorganic compound layer as the underlayer 12 has crystal grains and at least one ki... | 06/08/2004 |
| 6740383 | Magnetic recording medium possessing a ratio of Hc(perpendicular) to Hc(horizontal) that is not more than 0.22 and magnetic recording disk device A magnetic recording medium and a magnetic disk device using the same. The magnetic recording medium comprising a nonmagnetic substrate having applied thereon, through two or more chromium-based underlayers, a magnetic recording layer having a circumferential direct... | 05/25/2004 |
| 6740398 | Magnetic films including iridium, manganese and nitrogen Magnetic films comprising iridium, manganese and nitrogen (IrMnN) are disclosed. Multi-layer structures including ferromagnetic layers deposited on the IrMnN films are also disclosed. The IrMnN films have a (200) texture and may act as seed layers and/or exchange bi... | 05/25/2004 |
| 6737172 | Multi-layered anti-ferromagnetically coupled magnetic media An anti-ferromagnetically coupled (“AFC”), high areal density magnetic recording medium having improved thermal stability and signal-to-medium noise ratio (“SMNR”), comprising: (a) a non-magnetic substrate having at least one surface; and (b) a... | 05/18/2004 |
| 6727007 | Magneto-optical recording medium with reflective layer formed from two thin films possessing different surface tensions A magneto-optical recording medium includes at least a reflective layer and a recording layer formed in this order on a substrate, in which record and reproduction of information are carried out by irradiating the medium with laser beam from a recording layer side. ... | 04/27/2004 |
| 6726990 | Silicon oxide particles A collection of silicon oxide nanoparticles have an average diameter from about 5 nm to about 100 nm. The collection of silicon oxide nanoparticles effectively include no particles with a diameter greater than about four times the average diameter. The particles gen... | 04/27/2004 |
| 6723450 | Magnetic recording medium with antiparallel coupled ferromagnetic films as the recording layer A magnetic recording medium for data storage uses a magnetic recording layer having at least two ferromagnetic films with different remanent magnetization-thickness (Mrt) values that are coupled antiparallel across a nonferromagnetic spacer film predominantly by the... | 04/20/2004 |
| RE38501 | Magnetooptical recording medium and information recording and reproducing methods using the recording medium A method of recording information on and reproducing information from a magnetooptical recording medium which includes first and second magnetic layers. The method includes the step of projecting a light spot onto the medium. When reproducing information, the light ... | 04/20/2004 |
| 6720075 | Magnetic recording medium and magnetic recording medium driver for the medium with N-type ferrimagnetic recording layer A magnetic recording medium stable against heat of which high density recording can be attained is provided by employing a magnetic material such that coercive magnetic force in a recording magnetic layer increases with temperature rise. The magnetic recording mediu... | 04/13/2004 |
| 6716537 | Magnetoresistive element having multilayered film capable of effectively conducting a detecting current for detecting external magnetic field and method for making the same A magnetoresistive element includes a multilayered film comprising a magnetic detecting layer having a magnetoresistive effect, a pair of first antiferromagnetic layers in contact with the magnetic detecting layer of the multilayered film at a predetermined gap in t... | 04/06/2004 |
| 6714380 | Soft magnetic film having improved saturated magnetic flux density, magnetic head using the same, and manufacturing method therefor A lower magnetic pole layer and/or an upper magnetic pole layer are formed of a CoFeα alloy in which the component ratio X of Co is 8 to 48 mass %, the component ratio Y of Fe is 50 to 90 mass %, the component ratio Z of the element α (the element α is at least o... | 03/30/2004 |
| 6710986 | Tunneling magnetoresistive head and a process of tunneling magnetoresistive head There is proposed a high-sensitive TMR element wherein the selection of electronic state contributing to tunnel conduction is optimized. In this invention, a junction plane between a ferromagnetic layer (210) having a bcc structure and a tunnel barrier layer ... | 03/23/2004 |
| 6709767 | In-situ oxidized films for use as cap and gap layers in a spin-valve sensor and methods of manufacture Disclosed is a spin-valve sensor employing one or more in-situ oxidized films as cap and/or gap layers in order to achieve an increased GMR coefficient and improved thermal stability. A fabrication method comprises depositing multilayer metallic films on a wafer in ... | 03/23/2004 |
| 6709768 | Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium A magnetic recording medium having a high coercive force and being capable of high-density writing/reading has a substrate, a soft magnetic layer, a non-magnetic intermediate layer, a magnetic layer, a protective layer, and a lubricating layer. The magnetic layer is... | 03/23/2004 |
| 6701529 | Smart padding system utilizing an energy absorbent medium and articles made therefrom The present invention relates to an energy absorbent medium which is compliant and conformable in the absence of an applied force, and stiffens in response to the rate of an applied force to dissipate energy. The medium comprises a blend of a polymer and ... | 03/09/2004 |
| 6699588 | Medium with a NiNb sealing layer Sputter-deposited amorphous NiNb films on glass or glass-ceramic substrates have good adhesion with the substrates, and reduce lithium migration significantly. Longitudinal magnetic recording media deposited on oxidized NiNb sealing layers have very good ... | 03/02/2004 |
| 6696172 | Recording medium and method for manufacturing the same A magnetic recording medium has at least a non-magnetic under-layer, a magnetic layer, a protective layer and a liquid lubricant layer sequentially laminated on a non-magnetic substrate. The magnetic layer includes ferromagnetic grains and non-magnetic gr... | 02/24/2004 |
| 6692843 | Magnetic recording medium, method of fabricating magnetic recording medium, and magnetic storage A magnetic recording medium having first undercoating layers 40, 40' formed directly or via substrate face undercoating layers on a substrate 40, second undercoating layers 42, 42' directly formed on the first undercoating layers 40, 40', magnetic films 4... | 02/17/2004 |
| 6692840 | Polymer coating for rubber articles The present invention is directed to the use of a polymer coating composition having a dispersant, microbeads and a high Tg polymer with a Tg of greater than -10° C. for the inner coating on natural and synthetic rubber articles, particularly for latex g... | 02/17/2004 |
| 6682813 | Magnetic acicular alloy particles containing iron as a main component Magnetic acicular alloy particles containing iron as a main component according to the present invention, have an average major axial diameter of 0.05 to 0.2 μm, and pH values of water suspensions of said magnetic acicular alloy particles containing iron... | 01/27/2004 |
