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| Number | Title | Issue Date |
| 7407705 | Magnetic powder, a magnetic recording medium using the magnetic powder, and a method of surface treating a magnetic powder A magnetic powder composed primarily of Fe that has been surface-treated with a silane coupling agent, which magnetic powder is characterized in that it contains Co such that Co/Fe expressed in atomic percent is 20-50 at. %, Al such that Al/Fe expressed in atomic pe... | 08/05/2008 |
| 7402349 | Thick film composition yielding magnetic properties The invention is directed to a magnetic thick film composition comprising particles of permanent magnetic materials dispersed in organic medium wherein the medium comprises a polymer selected from polyurethane, phenoxy and mixtures thereof, and organic solvent. ... | 07/22/2008 |
| 7357997 | Powder for underlayer of coating-type magnetic recording medium and magnetic recording medium comprising the same A powder for an underlayer of a coating-type magnetic recording medium comprises acicular iron oxide particles having an average major axis length in the range of 20-200 nm, has a specific surface area measured by the BET method of 30-100 m2/g and has a p... | 04/15/2008 |
| 7338711 | Enhanced nanocomposite combustion accelerant and methods for making the same Nanoparticles having designed or engineered coatings that provide enhanced or improved characteristics to the coated nanoparticles and methods for forming the improved nanoparticles from oxide or ceramic coated nanoparticles. ... | 03/04/2008 |
| 7314675 | Magnetic media with high Ms magnetic layer Magnetic recording media having a magnetic layer, wherein the magnetic layer comprises a continuous matrix material and a separate portion that is different from the matrix is disclosed. The matrix comprises a non-ferromagnetic material that is non-ferromagnetic in ... | 01/01/2008 |
| 7297423 | Printed circuit board A PCB that can transmit a high frequency signal of a GHz band with a low loss includes an insulator and magnetic nanoparticles dispersed in the insulator. ... | 11/20/2007 |
| 7286324 | Cobalt-platinum or iron-plantinum magnetic material containing 1% to 40% Cu, Ni or B A CoPt- or FePt-alloy magnetic material in which a temperature to transform into an L10-ordered alloy is reduced and magnetic anisotropy energy is controlled, and a method for manufacturing the magnetic material are provided. In a CoPt- or FePt-alloy magn... | 10/23/2007 |
| 7246424 | Magnetic devices having magnetic features with CMP stop layers A magnetic device having a magnetic feature, the magnetic feature including a magnetic portion comprising a magnetic material, a region of non-magnetic material adjacent to the magnetic portion, and a stop layer disposed above the region of non-magnetic material, de... | 07/24/2007 |
| 7247251 | Method for manufacturing a magnetic recording medium A method for manufacturing a magnetic recording medium is provided, which can efficiently manufacture a magnetic recording medium that includes a recording layer formed in a concavo-convex pattern, has a sufficiently flat surface, and provides good recording and rep... | 07/24/2007 |
| 7229709 | Method for producing nanoparticle layer having uniform easy axis of magnetization, magnetic recording medium having such layer, its production method, and its production apparatus The magnetic recording medium provided is produced by forming a substrate having a nanoparticle layer comprising an array of nanoparticles, and an organic compound between said array of nanoparticles; irradiating the nanoparticle layer with an infrared beam to magne... | 06/12/2007 |
| 7166261 | Method of patterning products using chemical reaction 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... | 01/23/2007 |
| 7167342 | Magnetic recording medium, magnetic recording playback device, and information processing device A magnetic recording medium is provided while including a recording layer in which magnetic materials are in the shape of a circular cylinder and uniformity and size reduction are achieved simultaneously. The magnetic recording medium includes a recording layer and ... | 01/23/2007 |
| 7153597 | Magnetic recording media having chemically modified patterned substrate to assemble self organized magnetic arrays A data storage medium is provided according to the present invention for magnetic recording. The data storage medium includes a substrate having a locking pattern etched therein defining patterned regions. The patterned regions are chemically modified by depositing ... | 12/26/2006 |
| 7141317 | Perpendicular magnetic recording medium A perpendicular magnetic recording medium has a substrate, a soft magnetic underlayer formed on the substrate, arrayed soft magnetic dots formed on the soft magnetic underlayer, and a ferromagnetic recording layer formed on the soft magnetic dots and having magnetic... | 11/28/2006 |
| 7136252 | Magnetic recording and reproducing apparatus with recording layer having predetermined convex-concave pattern In the present invention, with respect to a convex-concave structure necessary for respective functions of a servo area in a perpendicular magnetic recording medium, a specification of configuration and magnetic property of a convex-concave magnetic layer of the per... | 11/14/2006 |
| 7095581 | Magnetic recording and reproducing apparatus with recording layer having predeterminded convex-concase pattern A convex structure, where a servo signal is recorded, of a perpendicular magnetic recording medium is set to a truncated quadrangular pyramid shape and a specification of the truncated quadrangular pyramid shape and so forth are determined according to properties of... | 08/22/2006 |
| 5480716 | Magnetic recording medium comprising ferromagnetic particles and a compound with a pyrimidine or tetrazaindene structure A magnetic recording medium is disclosed which includes a magnetic layer containing ferromagnetic metal particles containing Al in an amount of 0.5 to 6% by weight per the total weight of metal components contained in the ferromagnetic metal particles, th... | 01/02/1996 |
| 5277980 | Mass of fine particles of inorganic material and a film of the fine inorganic particles The present invention concerns a field of dealing with inorganic fine particles, and provides a mass of the inorganic fine particles and method of producing the mass, and as applications of the method, an ultrathin film of inorganic fine particles and met... | 01/11/1994 |
| 5252441 | Transparent magnetic recording layers and photographic elements containing the same A photographic element including a light-sensitive layer and a transparent magnetic layer wherein the magnetic particles in the transparent binder are cobalt surface treated gamma iron oxide (Fe2 O3) having a specific area of at leas... | 10/12/1993 |
| 5096774 | Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range A magnetic recording medium is disclosed, which comprises a non-magnetic support having thereon a magnetic layer comprising ferromagnetic fine particles and a binder containing a vinyl chloride polymer, wherein the crystalline size of the ferromagnetic fi... | 03/17/1992 |
| 5093191 | Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic particles and a binder containing a vinyl chloride polymer, wherein the crystallite size of the ferromagnetic particles is... | 03/03/1992 |
| 5082733 | Magnetic recording medium containing magnetic particles surface treated with a glycidyl compound A method for preparing a magnetic recording medium is disclosed, comprising the steps of (1) surface-treating ferromagnetic particles with a glycidyl compound having a molecular weight of 1,000 or less and having an epoxy equivalent of 200 g/eq. or less, ... | 01/21/1992 |
| 5053273 | Magnetic powder coated with a copolymer of polyoxyethylene allyl methyl diether and maleic anhydride A magnetic powder treated with a coating agent, wherein the surface of the magnetic powder is coated with an alternating copolymer comprising a polyoxyethylene allyl methyl diether and maleic anhydride. An aqueous coating material containing the magnetic ... | 10/01/1991 |
| 4713293 | Magnetic recording media A magnetic recording medium comprising a magnetic layer containing a magnetic metal powder, a fatty acid and an ester thereof, and wherein the surface of said magnetic metal powder is pre-treated with a surfactant.... | 12/15/1987 |
| 4710427 | Process for treating magnetic metal power A magnetic recording medium is disclosed comprising a support and a magnetic layer comprising a magnetic metal powder which is pre-treated by a process comprising (a) treating the surface of said magnetic metal powder with a surfactant in an inert atmosph... | 12/01/1987 |
| 4690863 | Magnetic recording media and process for producing same A magnetic recording media comprising a nonmagnetic supporting substrate and a ferromagnetic alloy powder-containing magnetic layer applied onto the surface thereof is produced by: pre-dispersing a ferromagnetic alloy powder with and in a binder, said all... | 09/01/1987 |
| 4687705 | Magnetic recording medium A magnetic recording medium is disclosed which comprises a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic metal particles and a binder, wherein the ferromagnetic metal particles have a specific surface area of 30 m | 08/18/1987 |
| 4650717 | Magnetic recording medium and process for manufacturing same A magnetic recording medium includes a magnetic layer which consists of a magnetic powder, and also an abrasive where necessary, dispersed in a binder, the magnetic powder or both the powder and the abrasive being coated, by adsorption, with a polycarboxy... | 03/17/1987 |
| 4623405 | Metallic magnetic powder A metallic magnetic powder treated with an alkyl group-containing dicarboxylic acid so that the acid is deposited on the particle surfaces. The amount of the acid so deposited ranges from 0.5 to 5% on the basis of the weight of the starting powder.... | 11/18/1986 |
| 4619861 | Magnetic powders with improved dispersibility Magnetic powders have a thin film of a nitrogen- or sulfur-containing organic polymer synthesized on the individual particles by plasma polymerization. The film is not more than 100 Å in thickness.... | 10/28/1986 |
| 4582759 | Magnetic recording medium and process for producing same A magnetic recording medium having a magnetic layer which is formed by dispersing a magnetic powder and further an abrasive when necessary into a binder containing a sugar alcohol. The magnetic recording medium has excellent glossiness, squareness ratio a... | 04/15/1986 |
| 4578313 | Powder for magnetic recording media and process for manufacturing the same A powder for a magnetic recording medium comprising a plurality of magnetic particles and a coating covering the surfaces of the magnetic particles. The coating is a residue resulting from the thermal decomposition of an organic material. The powder is ma... | 03/25/1986 |
| 4562117 | Magnetic recording medium and a process of fabricating such magnetic recording medium A magnetic recording medium comprising a support and provided thereon a magnetic layer containing magnetic powder and a copolymer capable of being soluble in water by 10 parts by weight or more per 100 parts by weight of water. Further, a process of prepa... | 12/31/1985 |
| 4529649 | Magnetic recording medium A magnetic recording medium excellent in magnetic properties and durability is provided which is characterized by containing magnetic powder coated with a reaction product between an aminosilane coupling agent and at least one compound selected from the g... | 07/16/1985 |
| 4521486 | Magnetic recording medium The magnetic recording medium comprises a non-magnetic substrate and a magnetic layer formed thereon composed mainly of magnetic powder and a binder. The binder contains a binder component having an absorbed amount of the binder component to a surface of ... | 06/04/1985 |
| 4501795 | Magnetic recording medium Magnetic recording particles (i) are coated with a reaction product of (ii) an isocyanate compound such as polyisocyanate compounds and isocyanate compounds having a hydrolyzable alkoxysilane group, and (iii) a phosphoric ester of an alkanol, alkenol, alk... | 02/26/1985 |
| 4475946 | Ferromagnetic metal particles of iron alloyed with Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Si, P, Mo, Sn, Sb and Ag coated with mono- or dialkoxysilanes Ferromagnetic metal particles are disclosed, which have a silane compound on the surface thereof. The silane compound is represented by the formula: wherein R and R' each represent an alkyl group and n represents 2 or 3. The ferromagnetic metal particles have ... | 10/09/1984 |
| 4415630 | Process of making magnetic recording medium A magnetic recording medium comprises a substrate and a magnetic recording layer formed thereon and which is made of a magnetic coating material consisting essentially of a magnetic powder dispersed in a binder, the coating material containing a titanium ... | 11/15/1983 |
| 4404260 | Magnetic recording medium and method of manufacture A magnetic recording medium, having formed on the surface of a non-magnetic substrate, a layer of the dispersion in a binder vehicle of magnetic particles having the surface thereof coated with a polyaminoamide phosphate.... | 09/13/1983 |
| 4379809 | Magnetic recording medium A magnetic recording medium which comprises a non-magnetic support having thereon a magnetic recording layer comprising ferromagnetic particles dispersed in a binder, with the magnetic layer further containing an organoaluminum compound or with the surfac... | 04/12/1983 |
