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| Number | Title | Issue Date |
| 6534204 | Magnetic storage medium There is provided a magnetic storage medium capable of recording information at high recording density and also regenerating the information with a high quality of signal (high S/Nm), and in addition contributing to the elongation of a life spa... | 03/18/2003 |
| 6534164 | Magnetic recording medium and magnetic recording apparatus using the same Magnetic recording medium includes at least two layers having different magnetic anisotropy constants formed on a substrate and the perpendicular magnetic anisotropy of the second magnetic film of those magnetic films, far from the substrate surface, made... | 03/18/2003 |
| 6534205 | Magnetic storage medium There is provided a magnetic storage medium capable of recording information at high recording density and also to regenerating the information with a high quality of signal (high S/Nm), and in addition contributing to the elongation of a life ... | 03/18/2003 |
| 6534203 | Magnetic recording medium A magnetic recording medium includes an anti-ferromagnetic layer 2 layered on at least one of the opposite major surfaces in a direction along the thickness of a ferromagnetic recording layer 3. It is possible for magnetization in the vicinity of a surfac... | 03/18/2003 |
| 6534168 | Magnetic recording medium comprising a lower layer containing specific flat acicular -iron oxide powder Provided is a magnetic recording medium exhibiting a high C/N (low noise) ratio in high-density magnetic recording. A magnetic recording medium which comprises a nonmagnetic lower layer comprising a nonmagnetic powder and a binder and a magnetic layer com... | 03/18/2003 |
| 6531202 | Perpendicular magnetic recording media with reduced-noise soft magnetic underlayer The present invention provides perpendicular recording media having a soft magnetic underlayer and magnetic regions which generate an external magnetic field in the soft magnetic underlayer. The soft magnetic underlayer is brought into a substantially sin... | 03/11/2003 |
| 6524724 | Control of magnetic film grain structure by modifying Ni-P plating of the substrate High areal density magnetic recording media exhibiting low noise are formed with a Ni--P--X plating layer, in which X is an additive meeting the following requirement: (1) The additive has a higher oxidation potential than that of Ni so that grains of an ... | 02/25/2003 |
| 6524730 | NiFe-containing soft magnetic layer design for multilayer media A multilayer superlattice having a structure with many interfaces of magnetic/non-magnetic layers could increase the coercivity of a magnetic recording medium by increasing the interfacial anisotropy. A soft magnetic layer comprising interstitial nitrogen... | 02/25/2003 |
| 6521341 | Magnetic particles, method for obtaining same and uses for separating molecules The invention concerns magnetic and heat-sensitive particles having a predetermined size between 0.05 and 10 μm, each particle comprising: an inner composite core consisting of a solid organic or inorganic particle, containing within it a magnetic filler... | 02/18/2003 |
| 6517942 | Magnetic recording medium and manufacturing method thereof A magnetic recording medium includes a magnetic layer, main components of which are magnetic powder and a binder, and a non-magnetic substrate on which the magnetic layer is formed. The binder is a polyurethane resin including a propanediol derivative exp... | 02/11/2003 |
| 6511761 | Magnetic recording media and magnetic storage apparatus In a magnetic storage apparatus including a recording medium having a magnetic layer, a seed layer and an underlayer formed on a substrate, a driver for driving the recording medium, a magnetic head having an inductive recording head and a magnetoresistiv... | 01/28/2003 |
| 6509083 | High coercivity magnetic recording medium comprising a sputter textured layer Reproducible texturing of magnetic recording media is enhanced by sputtering a buffer layer, such as Ni-P, on a nonmagnetic substrate, prior to sputtering a textured bump layer. A magnetic recording medium comprising a sputter textured metal layer and hig... | 01/21/2003 |
| 6509111 | Magnetic recording media and magnetic disk apparatus A magnetic recording media formed of magnetic alloy layer of Co as the main component on a substrate through an under-layer, a protective layer and a lubricant layer, stacked in this order, said under-layer comprises plural under-layers including a first ... | 01/21/2003 |
| 6506470 | Magnetic recording medium The present invention provides a magnetic recording medium having high electromagnetic transfer characteristics in a high-density recording medium. The invention provides a magnetic recording medium, which comprises a nonmagnetic primer layer placed on a ... | 01/14/2003 |
| 6506508 | Magnetic recording medium, method of production and magnetic storage apparatus In a magnetic recording medium including an underlayer made of an anti-ferromagnetic material and a magnetic recording layer made of a material containing cobalt as the principal component that are serially disposed on a non-magnetic substrate, an interme... | 01/14/2003 |
| 6503762 | Magnetic carrier, preparation thereof, and method of extraction of nucleic acid A novel magnetic carrier is provided which comprises particulate silica containing a magnetic material, having polyacrylamide on the surface thereof in an amount ranging from 0.3 to 5 mmol/g in terms of monomeric acrylamide. A process for producing the ma... | 01/07/2003 |
| 6503600 | Magnetic recording medium using a glass substrate In a magnetic recording medium, surface roughness of a glass substrate and the variation of the surface roughness are suppressed to the predetermined range. Namely, the surface roughness (Rmax, Ra, Rq) and the relation (Rmax/Ra) between Rmax and Ra are re... | 01/07/2003 |
| 6500374 | Method of manufacturing bonded magnets of rare earth metal, and bonded magnet of rare earth metal The present invention provides a method for manufacturing a rare-earth bonded magnet as follows: A compound 10, prepared by pelletizing a kneaded mixture of a rare-earth-bonded-magnet composition containing a rare-earth magnet powder, a binder resin and a... | 12/31/2002 |
| 6500530 | Magnetic recording medium A magnetic recording medium of the present invention comprises a first magnetic layer and a second magnetic layer each having different magnetization, coercive force, and temperature characteristics. By magnetically coupling the first and second magnetic ... | 12/31/2002 |
| 6500551 | Magnetic recording medium The magnetic recording medium of the invention comprises a substrate and a magnetic layer stacked thereon and composed of a dispersion of a ferromagnetic powder in a binder, and is characterized in that the binder contains a polyurethane resin 1 obtained ... | 12/31/2002 |
| 6501271 | Robust giant magnetoresistive effect type multilayer sensor A robust Giant Magneto Resistive effect type multilayer sensor comprising a free and a pinned ferromagnetic layer, which can withstand high temperatures and strong magnetic fields as required in automotive applications. The GMR multi-layer has an asymmetr... | 12/31/2002 |
| 6497948 | Magnetic recording medium The present invention aims to provide a particulate magnetic recording medium showing a high C/N in high-density magnetic recording (especially using an MR head for reproducing). Herein disclosed is a magnetic recording medium comprising a lower layer con... | 12/24/2002 |
| 6495252 | Magnetic recording medium with superparamagnetic underlayer High bit density, longitudinal and/or perpendicular magnetic recording media that are substantially free of Barkhausen noise are fabricated by utilizing magnetically soft, superparamagnetic underlayers which are compatible with the grain structure of the ... | 12/17/2002 |
| 6483645 | Garnet crystal for Faraday rotator and optical isolator having the same An optical isolator comprsing at least two parts of a Faraday rotator obtained from a garnet crystal and an analyzer, which is small in size, can be mounted directly to a semiconductor laser. The garnet crystal is grown, by a liquid-phase epitaxial growth... | 11/19/2002 |
| 6482506 | Magnetic recording medium Provided is a particulate magnetic recording medium having excellent electromagnetic characteristics, especially, a particulate magnetic recording medium which achieves a high output and a low noise and which is suitable for reproduction with an MR head. ... | 11/19/2002 |
| 6479096 | Method for manufacturing a GMR spin valve having a smooth interface between magnetic and non-magnetic layers A GMR spin valve is provided for reading a magnetic signal from a magnetic recording medium. The spin valve includes a non-magnetic layer such as for example copper, separated by first and second magnetic layers. The spin valve includes a pinned magnetic ... | 11/12/2002 |
| 6475611 | Si-containing seedlayer design for multilayer media A multilayer superlattice having a structure with many interfaces of magnetic/non-magnetic layers could increase the coercivity of a magnetic recording medium by increasing the interfacial anisotropy. A Si-containing seedlayer between a soft underlayer an... | 11/05/2002 |
| 6475598 | Magnetic recording medium The present invention provides a magnetic recording medium exhibiting a high C/N ratio as well as having excellent running durability even under high-density magnetic recording. Disclosed is a magnetic recording medium comprising, on either side of a flex... | 11/05/2002 |
| 6475613 | Magnetic recording medium The invention provides a magnetic recording medium which is reduced in the occurrence of a dropout and has excellent durability. The magnetic recording medium comprises a magnetic layer on one surface of a non-magnetic support and a back-coat layer, containing... | 11/05/2002 |
| 6472063 | Magnetic recording medium A magnetic recording medium comprising at least a lower non-magnetic layer containing at least a non-magnetic powders and a binder resin formed on a non-magnetic support and an upper magnetic layer formed on the lower non-magnetic layer, wherein the magne... | 10/29/2002 |
| 6468666 | Magnetic susceptible markerboard A magnetically active laminate is disclosed. The magnetically active laminate is composed of a resin impregnated layer bonded to a distinct, magnetically active sheet. The laminate is especially well suited for use in the construction of erasable markerbo... | 10/22/2002 |
| 6468678 | Conformable magnetic articles for use with traffic bearing surfaces methods of making same systems including same and methods of use Magnetic, conformable articles for use with traffic bearing surfaces are disclosed which comprise an organic binder having magnetic particles distributed therein. The articles may be employed in intelligent vehicle guidance systems, and in systems to guid... | 10/22/2002 |
| 6468614 | Apparatus for displaying paper, fabric, photographs or the like An apparatus for displaying paper, fabric, photographs or the like, comprises a long, narrow strip of thin ferromagnetic spring steel, and a number of small tacks embedded with rare earth magnets or other magnets. A tape-like dispenser stores unused tacks... | 10/22/2002 |
| 6468624 | Fastener strip with magnetic attractant The invention is a hook fastener strip (10), having magnetically attractable wires (13a,b,c,&d) which are located between, and retained by, hook members (11) on the front face of the fastener strip (10). Each hook member (11) is comprised of a shaft (14) ... | 10/22/2002 |
| 6461741 | Grain-oriented electromagnetic steel sheet with excellent coating properties and process for its manufacture A high permeability grain-oriented electromagnetic steel sheet with a higher tension-imparting effect and more excellent cohesion and magnetic properties compared to the prior art, which also maintains sufficient corrosion resistance to withstand practica... | 10/08/2002 |
| 6461750 | Magnetic recording medium with dual magnetic layers and high in-plane coercivity A magnetic recording media is formed with high in-plane coercivity employing dual magnetic layers. The first magnetic layer is sputter deposited in a chamber employing a shield such that the minimum incident angle of impinging atoms is relatively large, e... | 10/08/2002 |
| 6458432 | Process for producing magnetic disk A process for producing a magnetic disk having a randomly oriented magnetic powder, comprises: applying a magnetic coating solution containing at least a magnetic powder to a web that is being continuously conveyed, so as to prepare a magnetic layer; appl... | 10/01/2002 |
| 6455174 | Magnetic recording medium, recording and reproducing head, and magnetic recording and reproducing method A magnetic recording medium comprises, on a substrate, a recording auxiliary layer, a recording holding layer, recording control layer, and a recording layer. The recording layer is constructed by using a ferri-magnetic material having perpendicular magne... | 09/24/2002 |
| 6455101 | Method for depositing a protective carbon coating on a data recording disk A method and apparatus for depositing a protective film on a data recording disk, including the steps of depositing a magnetic film layer as a data recording layer on a surface of a substrate while the substrate is at a magnetic film deposition temperatur... | 09/24/2002 |
| 6451424 | Magneto-optical recording medium and method of manufacturing the same The object of the present invention is to improve the thermal properties while maintaining the optical performance index. In the constitution having the light-permeable first dielectric layer, magneto-optical recording layer, light-permeable metal layer 1... | 09/17/2002 |
