Class 428/833.2 - Carbon overcoat (e.g., graphite, diamond like, doped carbon, etc.)

Subclass of Class 428 - Stock material or miscellaneous articles
Definition: Subject matter in which at least one of the inorganic
No. of patents: 39
Last issue date: 05/01/2012

Number	Title	Issue Date
8168312	Magnetic recording medium and a method of manufacturing the same A magnetic recording medium and a method of manufacturing a magnetic recording medium are provided, in which degradation of wear resistance against a magnetic head and performances of the medium is restrained, and metal dissolving out of the magnetic recording layer...	05/01/2012
7771853	Patterned magnetic medium, magnetic recording medium and magnetic storage device A patterned magnetic medium includes: a substrate; a soft magnetic underlying film, a nonmagnetic film, an intermediate film and a recording layer which are formed on a principal surface of the substrate; a first protective film formed in contact with the recording ...	08/10/2010
7682711	Magnetic recording medium, magnetic recording and reproducing apparatus, and manufacturing method of magnetic recording medium A magnetic recording medium is provided which includes a recording layer formed in a concavo-convex pattern including recording elements formed as convex portions, provides a good flying performance of a magnetic head, and has high reliability. A magnetic recording ...	03/23/2010
7572528	Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproduction apparatus A magnetic recording medium is obtained by easily patterning a magnetic recording layer without deteriorating its electromagnetic conversion characteristics, by forming a silicon-based protective film between the magnetic recording layer and a photoresist, and perfo...	08/11/2009
7514163	Magnetic recording medium and magnetic recording device A magnetic recording medium having excellent durability and corrosion resistance as well as a magnetic recording device equipped with the magnetic recording medium is provided. The protective layer of the magnetic recording medium is composed of two layers, that is,...	04/07/2009
7391592	Magnetic recording medium including a diamond-like carbon protective film and at least two additional elements A magnetic recording medium having a diamond-like carbon (DLC) film added therein a Group IV element of the periodic table such as silicon, particularly in the vicinity of the boundary between the magnetic material and the formed DLC film. Since a DLC having low fri...	06/24/2008
7361421	Lubricant, magnetic recording medium and production method of magnetic recording medium A lubricant is obtained by mixing at least one compound selected from specific fluorine-based diester dicarboxylic acid compounds having has two carboxyl groups, two ester bonds, terminal groups each of which is an alkyl group or an alkenyl group, and one fluoroethe...	04/22/2008
7357998	Disk substrate for a perpendicular magnetic recording medium, perpendicular magnetic recording disk and manufacturing methods thereof A disk substrate for a perpendicular magnetic recording medium comprises a disk base member, a soft magnetic layer formed on the disk base member, and a protection layer formed on the soft magnetic layer. The soft magnetic layer and the protection layer are deposite...	04/15/2008
7354629	Method of forming a protective film and a magnetic recording medium having a protective film formed by the method A method of forming a protective film that restrains gas adsorption while preserving durability and corrosion resistance of a plasma CVD carbon film is disclosed. A protective film of a slide-resistant member is deposited by means of a plasma CVD method using a raw ...	04/08/2008
7327535	Hybrid coating for magnetic heads A system and method for providing corrosion protection for a magnetic read/write head is disclosed. A monolayer surface coating is applied to cover those portions of the under layer of a magnetic read/write head not already covered by a previously applied diamond-li...	02/05/2008
7248446	Magnetoresistive element using an organic nonmagnetic layer A magnetoresistive element has two magnetic layers and a nonmagnetic middle layer having organic molecules disposed between the two magnetic layers. The middle layer is thinner than 5 nm (50 Å). The magnetoresistive element exhibits a magnetoresistive effect as a ...	07/24/2007
7214436	Magnetic recording medium and process for producing same A magnetic recording medium of a metal thin-film type, which includes a magnetic layer and a carbon protective layer on a non-magnetic support member, and in which a non-magnetic metal thin-film is provided between the magnetic layer and the carbon protective layer,...	05/08/2007
7147943	Magnetic recording medium, the manufacturing method and magnetic recording apparatus using the same This magnetic recording medium is characterized in that in the magnetic recording medium having a magnetic layer on a non-magnetic substrate by intercalating at least an under layer, the proportion of functional groups per 100 carbon atoms in a diamond-like carbon p...	12/12/2006
7129194	Catalyst system with improved corrosion resistance An improved catalyst system that includes a metal support structure and an anti-corrosive layer on the metal support structure, and has improved resistance to corrosion and other degradation under corrosive environments. Typically, a catalyst supporting layer is app...	10/31/2006
7113367	FeNiRe soft magnetic film and thin film magnetic head using the same for simultaneous adjustment of resistivity and saturated magnetic flux density A soft magnetic film composed of an alloy represented by the formula FeNiRe is used for forming a lower core layer and/or an upper core layer. Since having a high saturated magnetic flux density, a high resistivity, superior corrosion resistance, and a small loss in...	09/26/2006
7067407	Method of growing electrical conductors A method for forming a conductive thin film includes depositing a metal oxide thin film on a substrate by an atomic layer deposition (ALD) process. The method further includes at least partially reducing the metal oxide thin film by exposing the metal oxide thin fil...	06/27/2006
6995948	Thin-film magnetic head, method for producing the same and magnetic disk device using the same A magnetoresistive thin-film magnetic head with high corrosion resistance for recording medium having massive capacity is provided by providing a protective film having a thickness of 40 Å or less. Since the distance between the head and the medium is remarkably r...	02/07/2006
6682807	Magnetic disk comprising a first carbon overcoat having a high SP3 content and a second carbon overcoat having a low SP3 content A method for making a magnetic disk comprises forming first and second protective carbon layers on a magnetic layer. The first protective carbon layer is predominantly SP3 carbon. The second protective carbon layer comprises about 50% or less SP3 carbon. ...	01/27/2004
6680106	Magnetic recording media with Ru corrosion barrier layer Corrosion protection of magnetic recording media is achieved by providing a thin protective barrier layer comprising ruthenium on the magnetic layer. Embodiments include forming a corrosion barrier layer less than 10 Å of elemental ruthenium, a ruthenium...	01/20/2004
6660413	Component of a magnetic recording medium with sealing layer for corrosion protection A component of a recording device comprising a magnetic layer, means for improving corrosion resistance of the magnetic layer and a carbon overcoat, and a method of making and using the same are disclosed. The means for improving corrosion resistance of t...	12/09/2003
6623836	Magnetic recording medium A magnetic recording medium having a diamond-like carbon (DLC) film added therein a Group IV element of the periodic table such as silicon, particularly in the vicinity of the boundary between the magnetic material and the formed DLC film. Since a DLC hav...	09/23/2003
5266409	Hydrogenated carbon compositions A composition of matter having an atomic density between that of pure diamond and at least 0.18 g-atoms per cubic centimeter and the formula: C1-z-w Siz Aw [H1-x Fx ]y where: 0ࣘz+wࣘ0.15, 0ࣘwࣘ...	11/30/1993
5110676	Magnetic recording medium incorporating metallic magnetic thin film A magnetic metallic thin film type of recording medium has particles of predetermined size uniformly distributed over a surface of a base layer, with a magnetic metallic thin film formed over these. A diamond-state carbon protective film, a carbon protect...	05/05/1992
5045165	Method for sputtering a hydrogen-doped carbon protective film on a magnetic disk A carbon film for protecting a magnetic disk is sputtered in the presence of hydrogen. If a sufficient amount of hydrogen is present in the sputtering chamber, the resulting carbon film will exhibit superior mechanical characteristics, i.e. an enhanced we...	09/03/1991
4842937	Method of depositing a wear-protective layer on a cutting tool and wear protective layer produced by the method A wear-protective layer for cutting tools is formed by the chemical vapor deposition or chemical plasma deposition or plasma sputtering by depositing a plurality of layers to a support of the cutting tool to form a multilayer in which each successive laye...	06/27/1989
4820584	Magnetic recording medium and method of manufacturing the same A magnetic recording medium according to the present invention comprises a non-magnetic substrate, a magnetic recording layer formed on the non-magnetic substrate, and a lubricant layer containing carbon as a major component and formed on the magnetic rec...	04/11/1989
4804590	Abrasion resistant magnetic recording member An abrasion resistant magnetic recording member having a carbonaceous surfacial protective film for protecting a surface of a magnetic film formed on a substrate, and the carbonaceous surfacial protective film is formed of a lower layer comprising a compa...	02/14/1989
4774130	Magnetic recording medium A magnetic recording medium has a magnetic film formed on the surface of a substrate and a protective film further formed on the surface of the magnetic film. The protective film is composed of a first layer containing at least one substance selected from...	09/27/1988
4755426	Magnetic recording medium and production of the same A magnetic recording medium which comprises a substrate, a magnetic layer on the substrate and a protective layer which is formed directly on the magnetic layer or on an undercoat layer formed on the magnetic layer, the protective layer comprising a carbo...	07/05/1988
4748073	Perpendicular magnetic recording medium with multilayered protective layer A perpendicular magnetic floppy disk has a base layer on each side of which a recording layer is formed having an axis of easy magnetization in a direction perpendicular to its surface. A multilayered protective layer structure is provided on the recordin...	05/31/1988
4713288	Magnetic recording medium Disclosed is a magnetic recording medium in which a magnetic layer of a ferromagnetic material, a layer of an organic material and a layer of carbon are formed on a substrate in this order. The magnetic recording medium has the benefit of remarkably extended l...	12/15/1987
4713279	Magnetic recording medium A magnetic recording medium is disclosed comprising a non-magnetic base plate, a magnetic layer formed on said plate, a protective layer comprising silicon dioxide formed on said protective layer, and a lubricant layer comprising amorphous carbon formed o...	12/15/1987
4698256	Articles coated with adherent diamondlike carbon films Substrates, especially highly thermally expandable materials, such as plastics are adherently coated with a relatively soft layer comprising carbon and thereafter with a relatively harder layer of diamond-like carbon to provide coated articles that are ab...	10/06/1987
4647494	Silicon/carbon protection of metallic magnetic structures A superior wear-resistant coating is provided for metallic magnetic recording layers, where the improved coating is a hard carbon layer that is strongly bound to the underlying metallic magnetic recording layer by an intermediate layer of silicon. The sil...	03/03/1987
4636434	Ceramic composite article A carbon film is formed on a ceramic element, or a metal film is formed on the carbon film, and subsequently the ceramic element is bonded to another ceramic or metal element, thereby forming a composite article. The composite article has a high bonding s...	01/13/1987
4619865	Multilayer coating and method Multilayer protective coatings that are applied over a substrate are disclosed that comprise a plurality of superimposed multilayer units. Each multilayer unit contains two or more superimposed thin layers in which at least two layers are compositionally ...	10/28/1986
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
4565734	Magnetic recording medium A magnetic recording medium comprises a non-magnetic substrate, a thin magnetic metal film layer overlaid on the substrate, a metallic oxide layer formed on the surface of the thin magnetic metal film layer, and a polymer film formed by plasma polymerizat...	01/21/1986
4503125	Protective overcoating for magnetic recording discs and method for forming the same A protective overcoating is disclosed for a magnetic alloy thin-film recording disc that includes a magnetic alloy film formed on a disc-shaped substrate or coated substrate. The protective overcoating is formed by first sputtering onto the magnetic mediu...	03/05/1985

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Class 428/833.2 - Carbon overcoat (e.g., graphite, diamond like, doped carbon, etc.)