Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8133363 | Dual magnetic tunnel junction sensor with a longitudinal bias stack A dual magnetic tunnel junction (MTJ) sensor is provided with a longitudinal bias stack sandwiched between a first MTJ stack and a second MTJ stack. The longitudinal bias stack comprises an antiferromagnetic (AFM) layer sandwiched between first and second ferromagne... | 03/13/2012 |
| 8101049 | Method for producing low cost media Disclosed is a method for the low cost manufacturing a plurality of rigid sputtered magnetic media disks of one or more sizes from a rigid sheet, in which one or more initial steps of preparing the media are performed while the media is in sheet form. The individual... | 01/24/2012 |
| 8043483 | Film forming method by sputtering and sputtering apparatus thereof To provide a sputtering apparatus that enables oblique film forming by arranging a target and a substrate so as to allow sputtered particles emitted from the target to obliquely enter the substrate selectively, and can form a magnetic film having high uniaxial magne... | 10/25/2011 |
| 8029651 | Method for forming magnetic layer, magnetic recording medium, and magnetic recording and reproducing apparatus The invention provides a method of forming a magnetic layer with stable magnetic properties and stable recording-and-reproducing properties, by uniformizing the distribution of oxygen radical concentration upon reactive sputtering, and thereby uniformizing the conce... | 10/04/2011 |
| 7993497 | Magnetic disk and magnetic disk manufacturing method In a magnetic disk having at least a glass substrate, a plurality of underlayers formed over the glass substrate, and a magnetic layer formed over the plurality of underlayers, at least one of the underlayers is an amorphous underlayer containing a VIa group element... | 08/09/2011 |
| 7780820 | Low resistance tunneling magnetoresistive sensor with natural oxidized double MgO barrier A high performance TMR sensor is fabricated by incorporating a tunnel barrier having a Mg/MgO/Mg configuration. The 4 to 14 Angstroms thick lower Mg layer and 2 to 8 Angstroms thick upper Mg layer are deposited by a DC sputtering method while the MgO layer is formed... | 08/24/2010 |
| 7771570 | Method and apparatus for depositing a magnetoresistive multilayer film This application discloses a method and apparatus for manufacturing a magnetoresistive multilayer film having a structure where an antiferromagnetic layer, a pinned-magnetization layer, a nonmagnetic spacer layer and a free-magnetization layer are laminated on a sub... | 08/10/2010 |
| 7713389 | Perpendicular magnetic recording disk with ultrathin nucleation film for improved corrosion resistance and method for making the disk A perpendicular magnetic recording disk has a granular cobalt alloy recording layer (RL) containing an additive oxide or oxides, an intermediate layer (IL) as an exchange-break layer on the “soft” magnetic underlayer (SUL), and an ultrathin nucleation film (NF) ... | 05/11/2010 |
| 7645363 | Manufacturing of magnetic recording medium A magnetic recording medium having excellent fly-ability and corrosion resistance is provided in a high yield by controlling protuberant on a medium surface caused by deposition of giant silicon oxide particles, which are created during the film deposition of a gran... | 01/12/2010 |
| 7641774 | Manufacturing process for perpendicular magnetic recording medium A perpendicular magnetic recording medium is manufactured having excellent thermal stability and recording performances across the entire disk surface. In one embodiment, the recording layer includes at least two layers deposited by using a reactive sputtering metho... | 01/05/2010 |
| 7638020 | Vertical magnetic recording medium and manufacturing method thereof A magnetic recording medium of higher coercive force and a manufacturing method thereof are provided by enabling reactive sputtering of stable reproducibility even with the addition of oxygen in the formation of a magnetic film using oxygen addition type reactive sp... | 12/29/2009 |
| 7628895 | W-patterned tools for transporting/handling pairs of disks Various apparatus and methods are provided for handling and transporting pairs of disks. A transfer tool engages a pair of disks in gap merge orientation along the outer perimeter edge of the disks and maintains the orientation while transferring the pair of disks t... | 12/08/2009 |
| 7517436 | Magneto-optical recording medium and manufacturing method thereof In a manufacturing method of a magneto-optical recording medium formed by laminating a plurality of magnetic layers, there is provided a manufacturing method whereby at least two of the magnetic layers can be properly and individually formed by sputtering the same t... | 04/14/2009 |
| 7504007 | Process for obtaining a thin, insulating, soft magnetic film of high magnetization A thin soft magnetic film combines a high magnetization with an insulating character. The film is formed by nitriding Fe-rich ferromagnetic nanograins immersed in an amorphous substrate. A selective oxidation of the amorphous substrate is then performed. The result ... | 03/17/2009 |
| 7423939 | Method for manufacturing magneto-optical recording medium A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reli... | 09/09/2008 |
| 7413636 | Method for manufacturing a dual spin valve sensor having a longitudinal bias stack A dual spin valve (SV) sensor is provided with a longitudinal bias stack sandwiched between a first SV stack and a second SV stack. The longitudinal bias stack comprises an antiferromagnetic (AFM) layer sandwiched between first and second ferromagnetic layers. The f... | 08/19/2008 |
| 7402226 | Minute high-performance rare earth magnet for micromini product and process for producing the same A method of manufacturing a rare earth permanent magnet comprises the steps of: forming a rare earth magnet by applying mechanical processing to a magnet block material, thereby damaging the surface of the magnet and causing a magnetic characteristic (BH)max of the ... | 07/22/2008 |
| 7399386 | Magnetic recording medium, method of manufacturing the same and magnetic recording apparatus A magnetic recording medium using a plastic substrate as a non-magnetic substrate includes an adhesive layer that prevents film expansion even under severe conditions. The adhesive layer has a chemical affinity to the plastic substrate and is formed on the surface o... | 07/15/2008 |
| 7399387 | Target for sputtering and a method for manufacturing a magnetic recording medium using the target A target for sputtering includes a sputtering material layer having tilt surfaces. Sputtering material particles are emitted from the tilt surfaces in directions of their normals. Consequently, even though the target and a substrate are arranged approximately parall... | 07/15/2008 |
| 7390381 | Information recording medium and method of manufacturing the same An information recording medium that is excellent in repeated-rewriting performance and is deteriorated less in crystallization sensitivity with time is provided, with respect to which high density recording can be carried out. A method of manufacturing the same als... | 06/24/2008 |
| 7377025 | Method of forming an improved AP1 layer for a TMR device A TMR read head with improved voltage breakdown is formed by laying down the AP1 layer as two or more layers. Each AP1 sub-layer is exposed to a low energy plasma for a short time before the next layer is deposited. This results in a smooth surface, onto which to de... | 05/27/2008 |
| 7368146 | Magneto-optical recording medium, manufacturing method thereof and magneto-optical data recording and playback device A magneto-optical recording medium has a recording layer and a reflective layer on a substrate. The recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled ... | 05/06/2008 |
| 7367773 | Apparatus for combining or separating disk pairs simultaneously Various methods and apparatus are provided for merging and demerging pairs of disks. In one embodiment, pairs of merged disks are first separated and then transferred to separate cassettes such that all of the disks in the separate cassettes are oriented in the same... | 05/06/2008 |
| 7369027 | High frequency magnetic thin film, composite magnetic thin film and magnetic device using them A high frequency magnetic thin film characterized by comprising a first layer made of a T-L composition (here, T is Fe or FeCo, and L is one or more of C, B, and N) and a second layer comprising a Co-based amorphous alloy arranged on either of the surfaces of the fi... | 05/06/2008 |
| 7361419 | Substrate for a perpendicular magnetic recording medium, perpendicular magnetic recording medium, and manufacturing methods thereof A substrate for a perpendicular magnetic recording medium has a soft magnetic underlayer that functions as a soft magnetic backing layer of a perpendicular magnetic recording medium. The substrate for a perpendicular magnetic recording medium has a nonmagnetic base ... | 04/22/2008 |
| 7354505 | Epitaxial ferromagnetic NiFeN An epitaxial Ni3FeN film with unique magnetic properties such as single magnetic domain (even in a large scale 0.5″×0.5″), which rotates coherently in response to the desired switching field with a very sharp transition is described. The magnetic hys... | 04/08/2008 |
| 7354618 | Oxygen plasma post-deposition treatment of magnetic recording media A method of manufacturing magnetic recording media, comprising sequential steps of: (a) providing an apparatus for manufacturing the media; (b) supplying the apparatus with at least one substrate for the media; | 04/08/2008 |
| 7354664 | Magnetically soft, high saturation magnetization laminate of iron-cobalt-nitrogen and iron-nickel for perpendicular media underlayers A magnetic disk has a soft magnetic underlayer comprising a first layer containing NiFe having a concentration of iron that is at least thirty percent and not more than seventy percent; a second layer that adjoins the first layer and contains FeCoN having a concentr... | 04/08/2008 |
| 7355813 | Method of fabricating a narrow projection such as a write pole extending from a substrate An article is formed as a substrate having a projection extending outwardly therefrom. The article may be a magnetic recording head and the projection a write pole. The projection has a width in a thinnest dimension measured parallel to a substrate surface of no mor... | 04/08/2008 |
| 7352524 | Magnetic disk drive A magnetic disk drive comprises a recording medium, a slider, and an alignment device for aligning the slider with respect to the medium. No film made of liquid lubricant is disposed on the surface of the medium. The slider incorporates: a slider main body including... | 04/01/2008 |
| 7347353 | Method for connecting magnetic substance target to backing plate, and magnetic substance target A method for connecting a magnetic substance target to a backing plate with less variation in plate thickness, characterized in having the steps of connecting the magnetic substance target to an aluminum plate beforehand while maintaining the flatness, connecting th... | 03/25/2008 |
| 7335426 | High strength vacuum deposited nitinol alloy films and method of making same A vacuum deposition method for fabricating high-strength nitinol films by sputter depositing nickel and titanium from a heated sputtering target, and controlling the sputter deposition process parameters in order to create high-strength nitinol films that exhibit sh... | 02/26/2008 |
| 7329433 | Shippable heat-treatable sputter coated article and method of making same The present invention provides a method of making a coated article, including the steps of: (A) providing a substrate; (B) depositing one or more dielectric layers over the substrate, the dielectric layers comprising: (i) a first dielectric film having at least one ... | 02/12/2008 |
| 7330340 | Magnetoresistive sensor with free layer bias adjustment capability A magnetoresistive sensor having a free layer biased by an in stack bias layer that has a magnetic moment canted with respect to the ABS, such that the magnetic moment of the biasing layer has a longitudinal component in a direction parallel with the ABS and a compo... | 02/12/2008 |
| 7325296 | Method of fabricating a magnetic head A magnetic head having a magnetic shield and/or pole layer that is fabricated as a plurality of laminated layers, in which each layer includes a sublayer thickness of Fe(N) and a sublayer thickness of NiFe(N), and where the relative thickness of these two sublayers ... | 02/05/2008 |
| 7323259 | Multilayer perpendicular media with high-boron or high-carbon additives to CoCr films Carbon or boron is added into the CoCr layers of a multiplayer perpendicular magnetic media structure to reduce media noise. The perpendicular magnetic media structure has sharp interfaces between Co-alloy layers and Pd or Pt layers and significantly reduced exchang... | 01/29/2008 |
| 7322098 | Method of simultaneous two-disk processing of single-sided magnetic recording disks Various methods and apparatus for simultaneously processing two single-sided hard memory disks is provided. Disks are positioned in pairs, with one surface of one disk positioned adjacent one surface of the second disk, with the disk surfaces touching or with a slig... | 01/29/2008 |
| 7312957 | Current-perpendicular-to-the-plane structure magnetoresistive element having sufficient sensitivity A current-perpendicular-to-the-plane (CPP) structure magnetoresistive element includes an electrode layer contacting a magnetoresistive film. A low resistance region is defined to extend rearward along the boundary of the magnetoresistive film from the front end exp... | 12/25/2007 |
| 7313056 | Magneto-optical recording medium and magneto-optical recording device The magneto-optical recording medium is comprised of a phase pit substrate/dielectric layer/recording layers/dielectric layer/reflection layer and a ROM and RAM can be simultaneously regenerated. The shape of the phase pit is constructed to be 5 | 12/25/2007 |
| 7312958 | Method for manufacturing magnetic disk apparatus A method for manufacturing a magnetic disk apparatus having a highly sensitive reproducing head. A spin-valve-type multilayer film composed of an antiferromagnetic layer, a ferromagnetic layer, a nonmagnetic layer and a free magnetic layer is used as a magnetoresist... | 12/25/2007 |
