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| Number | Title | Issue Date |
| 8168311 | Magnetic recording disk having pre-patterned surface features and planarized surface A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recor... | 05/01/2012 |
| 8043734 | Oxidized conformal capping layer The invention relates to granular perpendicular magnetic recording media with a capping layer comprised of a material having high surface mobility and low surface energy. The capping layer surface is oxidized to produce a passivating surface that is impervious to co... | 10/25/2011 |
| 7740961 | Magnetic recording medium A magnetic recording media has recording cells formed of two-dimensionally arrayed magnetic material, a nonmagnetic layer surrounding the recording cells, an adhesive film formed on each of the recording cells, and a lubricant directly adhered to the adhesive film. | 06/22/2010 |
| 7501192 | Recording medium including protection layer having unequal property A first protection layer is overlaid on the surface of a recording layer in a recording medium. A second protection layer is overlaid on the surface of the recording layer at a position adjacent the first protection layer. The second protection layer has a compositi... | 03/10/2009 |
| 7277254 | Magnetic recording disk and process for manufacture thereof A magnetic recording disk having a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a perfluoropolyether compound having an end m... | 10/02/2007 |
| 7252897 | Magnetic recording disk and process for manufacture thereof A magnetic recording disk having a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a perfluoropolyether compound having an end m... | 08/07/2007 |
| 7092199 | Magnetic tape and magnetic tape cartridge A magnetic tape which is run at a speed of 4 m/sec. or higher and has recording tracks with a width of 21 μm or less, and which includes a non-magnetic support, at least one magnetic layer formed on one surface of the non-magnetic support, and a backcoat layer form... | 08/15/2006 |
| 7074693 | Plasma spraying for joining silicon parts A method of joining two silicon members and the bonded assembly in which the members are assembled to place them into alignment across a seam. Silicon derived from silicon powder is plasma sprayed across the seam and forms a silicon coating that bonds to the silicon... | 07/11/2006 |
| 7061728 | High linear density read head with a contiguous junction and minimal shield shorts In a magnetic head a read sensor is located between first and second read gap layers wherein the first read gap layer includes a read gap material layer and first and second refill gap layers. The read gap material layer has first and second depressions which extend... | 06/13/2006 |
| 6641890 | Cartridge-contained recording medium In a magneto-optical disc contained in a cartridge, a first dielectric layer, signal recording layer, second dielectric layer, and light reflecting layer are sequentially stacked on a substrate having formed grooves, and a first protective layer, print la... | 11/04/2003 |
| 5536577 | Magnetic recording medium comprising a protective layer and a lubricant layer which contains a host multidentate ligand and a guest reversibly trapped lubricant The lubricant layer according to the present invention is used in a thin film magnetic recording medium in which a solid surface sliding at a high speed is required to retain its lubricating performance and abrasion resistance for a long period of time, c... | 07/16/1996 |
| 5489480 | Magnetic recording medium and process for producing the same Disclosed is a process for producing a magnetic recording medium comprising subjecting a ferromagnetic metal thin film formed on a non-magnetic support by vacuum film formation to a high humidity treatment in an atmosphere of from 50 to 90% RH at a temper... | 02/06/1996 |
| 5178954 | Magnetic recording medium having a metallic magnetic thin film layer, a primer layer comprising an amino alkoxysilane and a lubricant layer comprising a functional perfluoropolyether A two-layer protective coating covers a metallic thin film magnetic recording medium of a magnetic recording element. The two-layer protective coating comprises a primer layer proximal to the metallic thin film magnetic recording medium. The primer layer ... | 01/12/1993 |
| 5080971 | Magnetic recording medium In a magnetic recording medium wherein a metal thin film magnetic layer and an overcoat are formed on a nonmagnetic substrate, durability is improved when the overcoat comprises a plasma-polymerized film and a topcoat of an organic fluorine compound; a pl... | 01/14/1992 |
| 5069967 | Magnetic recording medium In a magnetic recording medium wherein a metal thin film magnetic layer and an overcoat are formed on a nonmagnetic substrate, durability is improved when the overcoat comprises a plasma-polymerized film and a topcoat of an organic fluorine compound; a pl... | 12/03/1991 |
| 5049410 | Lubricant film for a thin-film disk A lubricant film for a thin-film disk is disclosed. The lubricant film comprises a monolayer of fixed lubricant bonded to the surface of the thin-film disk and a mobile lubricant in contact with the layer of fixed lubricant. The monolayer of lubricant fil... | 09/17/1991 |
| 4849305 | Magnetic recording medium Herein disclosed is an improved magnetic recording medium which comprises a substrate, a magnetic recording layer, if necessary, a protective layer, an adhesion promoting layer and a lubricant layer, respectively applied or deposited on the substrate in t... | 07/18/1989 |
| 4680218 | Magnetic recording medium A magnetic recording medium comprises a base, a magnetic layer made of a magnetic material and formed on the base, a lubricant layer made of a lubricant material having lubricity and formed on the magnetic layer, and a corrosion resisting layer made of a ... | 07/14/1987 |
| 4664978 | Methods of modifying polymeric surfaces and articles produced thereby This invention relates to an improved process to produce composite polymeric materials and an article having an adherent surface layer. More specifically, the invention describes a process for producing a modifying adherent layer on a passive polymeric ma... | 05/12/1987 |
| 4601950 | Magnetic recording medium and manufacturing method thereof A manufacturing method for a magnetic recording medium is disclosed which comprises the steps of forming a metallic magnetic layer on a non-magnetic substrate such as a polyester film with or without a non-magnetic metal layer deposited thereon by a metho... | 07/22/1986 |
| 4529659 | Magnetic recording member and process for manufacturing the same Magnetic recording member having a magnetic storage layer covered by composite overlaying layers including an intermediate layer and a lubricant layer. The thin intermediate layer is formed by coating an aminosilane or epoxysilane compound directly or ind... | 07/16/1985 |
| 4521482 | Magnetic recording medium A magnetic recording medium having a layer of an organic polymer formed on an oblique vapor deposited magnetic metal film is disclosed. A layer of a higher aliphatic acid and/or an ester thereof is also formed on said polymer layer.... | 06/04/1985 |
| 4404247 | Protective covering for magnetic recording medium Magnetic recording medium protected by an ultra-thin, composite low surface energy covering provided by an inner layer of insoluble polymer and an outer layer of insoluble polymer which are made by in situ polymerization. The inner layer is made from two ... | 09/13/1983 |
| 4188434 | Lubricant for a magnetic member A magnetic record, such as a magnetic disc, has a smooth continuous layer of solid lubricant mixed with liquid lubricant. The lubricating layer is applied by spraying the magnetic record with a carrier in which the solid and liquid lubricants are dissolve... | 02/12/1980 |
| 4074016 | Magnetic record carrier A record carrier for a magnetic thin film metal layer includes a substrate coated with a pigmented epoxy resin as a synthetic substance layer. The pigment includes approximately 20% titanium dioxide and approximately 2% aluminum oxide. A thin getter metal... | 02/14/1978 |
| 4069360 | Magnetic record member and process for manufacturing the same Magnetic storage means which may be a disc having a magnetic storage layer coated with a protective layer. The protective layer, which is preferably an inorganic oxide material, protects the magnetic storage layer from corrosion. A lubricant is applied to... | 01/17/1978 |