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| Number | Title | Issue Date |
| 8043522 | Ferrite material and method for producing ferrite material The invention provides a ferrite material (ferrite sintered body, ferrite powders) having a composition formula of (1-x-y-z)(Li0.5Fe0.5)O.xZnO.y(Mn, Fe)2O3.zCuO, wherein x, y, z, and a satisfy 0.175≦x≦0.29; 0.475≦yâ‰... | 10/25/2011 |
| 7892446 | Ferrite material A ferrite material in which Bi2O3 is added at 6% by weight or less, and preferably 4% by weight or less, to a ferrite of Li—Zn—(Mn, Fe) containing a specified amount of Mn. In the ferrite material, change of magnetic permeability under high... | 02/22/2011 |
| 7390425 | Ferrite sintered body and method of manufacturing same The ferrite sintered body of hexagonal Z-type ferrite contains 17 mol % to 21 mol % of BaO, 6 mol % to 13 mol % of CoO, the remainder being Fe2O3 as its main components and also contains 0.05% to 1.0% by mass of Li, based on the main components... | 06/24/2008 |
| 7332101 | Permanently linked, rigid, magnetic chains One aspect of the present invention relates to a permanently linked, rigid, magnetic chain of particles prepared by sol-gel methods. A second aspect of the present invention relates to a method of preparing a permanently linked, rigid, magnetic chain of particles co... | 02/19/2008 |
| 7238298 | Ni-Cu-Zn-based ferrite material and process for the production thereof An Ni—Cu—Zn-based ferrite material contains TiO2 alone as an additive in an amount of 0.1 wt % | 07/03/2007 |
| 7101489 | Composite magnetic material and a method for producing the same A composite magnetic material contains first magnetic particles made of a first magnetic material and second magnetic particles made of a second magnetic material, the first and second magnetic particles being mixed with each other. A frequency characteristic of the... | 09/05/2006 |
| 7011764 | Method for producing a magnetic device A magnetic device and method for making it involve a magnetic device specifically constructed of grains in a matrix. The matrix may be cement or plaster. The grains have an average diameter that is greater than their magnetic domains. The device may be applied to sh... | 03/14/2006 |
| 6908568 | Preparation of oxide magnetic material and oxide magnetic material An oxide magnetic material is prepared by wet molding in a magnetic field a slurry containing a particulate oxide magnetic material, water and a polyhydric alcohol having the formula: Cn(OH)nHn+2 wherein n is from 4 to 100 as a dispe... | 06/21/2005 |
| 6893581 | Composite magnetic material and a method for producing the same A composite magnetic material contains first magnetic particles made of a first magnetic material and second magnetic particles made of a second magnetic material, the first and second magnetic particles being mixed with each other. A frequency characteristic of the... | 05/17/2005 |
| 6872251 | Method for manufacturing single crystal ceramic powder, and single crystal ceramic powder, composite material, and electronic element A method for manufacturing single crystal ceramic powder is provided. The method includes a powder supply step for supplying powder consisting essentially of ceramic ingredients to a heat treatment area with a carrier gas, a heat treatment step for heating the powde... | 03/29/2005 |
| 6852245 | Process for producing granules for being molded into ferrite, granules for being molded into ferrite, green body and sintered body A composition for producing granules for molding ferrite, which comprises a ferrite slurry at least having raw ferrite powders; an ethylene-modified polyvinyl alcohol whose ethylene modified amount is from 4 to 10 mol %, average polymerization degree is from 500 to ... | 02/08/2005 |
| 6793842 | Single-crystal ferrite fine powder A ferrite fine powder having a mean particle size of 0.1 to 30 μm and made of spherical single-crystal particles. The ferrite fine powder has superior physical properties and excellent magnetic properties desirable for use as a raw material for a dust core of coils... | 09/21/2004 |
| 6689287 | Ferroelectric and ferromagnetic material having improved impedance matching The subject invention includes a composite material comprising a ferroelectric material and a ferromagnetic material having a loss factor (tan δ) for the composite material which includes a dielectric loss factor of the ferroelectric material and a magne... | 02/10/2004 |
| 6666991 | Fluorescent or phosphorescent composition A fluorescent or luminous composition, comprising a multilayered film-coated powder having at least two coating films on a base particle, and a fluorescent or luminous substance; the composition, wherein at least one layer of the coating films contains th... | 12/23/2003 |
| 6652768 | Magnetic ferrite composition and process of production thereof A magnetic ferrite composition including at least one of Mg, Ni, Cu, Zn, Mn, and Li and having a content of carbon within a predetermined range, for example, over 9.7 weight ppm to less than 96 weight ppm. The composition may be used as the magnetic core ... | 11/25/2003 |
| 6652767 | Composition for plastic magnet In a composition for a plastic magnet, containing an Nd--Fe--B based alloy powder and a ferrite magnetic material powder mixed to a resin material, the Nd--Fe--B based alloy powder has particle sizes distributed in a range of 100 to 400 μm, and the ferri... | 11/25/2003 |
| 6569346 | Ferrite with high permeability and high dielectric constant and method for making the same A ferrite with a high permeability and a high dielectric constant is introduced. Raw material powders, such as TiO2, Fe2 O3 and the oxide of Mn, Ni, Cu, Mg, Li or Zn is prepared and combined in the proportion Tix | 05/27/2003 |
| 6495059 | Magnetic ferrite composition and process of production thereof A magnetic ferrite composition including at least one of Mg, Ni, Cu, Zn, Mn, and Li and having a content of carbon within a predetermined range, for example, over 9.7 weight ppm to less than 96 weight ppm. The composition may be used as the magnetic core ... | 12/17/2002 |
| 6465390 | Porous composite particles and process for producing the same Porous composite particles contain 80 to 98% by weight of a filling material and 2 to 20% by weight of carbon, and have an average pore diameter of not more than 5 nm when measured with respect to pores existing in both the surface and inside portions the... | 10/15/2002 |
| 6416681 | Granule for forming ferrite body, ferrite sintered product and production method thereof Granule for forming ferrite is provided by mixing powders of ferrite raw material, polyvinyl alcohol as a binder and polyethylene glycol added as plasticizer and having molecular weight being 1000 to 6000, and forming granules.... | 07/09/2002 |
| 6210596 | Magnetic ceramic composition and inductor using the composition A magnetic ceramic composition containing ferrite serving as a primary component and a sintering aid. The composition can be sintered at low temperature. The sintering aid contains about 2-45 mol % Li2 O; about 5-40 mol % RO, with R being at le... | 04/03/2001 |
| 6193904 | Method for preparation of ferrites Methods of preparing ferrite powders for use in microwave elements such as isolators, circulators, phase shifters and transmission line elements. In one method separate precipitations of metal dicarboxylate salts such as oxalates or malonates are mixed wi... | 02/27/2001 |
| 6143194 | Magnetic iron oxide, process for its production and the use thereof The invention relates to magnetite particles having an iron content of 45 to 73 wt. %, a process for their production and their use for the production of toners, printing inks and inks for ink jet printers.... | 11/07/2000 |
| 6077454 | Ferrite compositions for use in a microwave oven A ferrite composition is created by adding a high Curie temperature ferrite, such as lithium ferrite, to a soft magnetic ferrite, such as magnesium manganese zinc ferrite. The composition is used in a microwave oven dish or laminate wrap to crisp or brown... | 06/20/2000 |
| 5932498 | Magnet and method for manufacturing a magnet A chemically-machinable glass-magnet composition comprising a photosensitive chemically machinable glass having a magnetic material in admit therewith, wherein the photosensitive chemically machinable glass is formed of SiO2 --Li2 O-... | 08/03/1999 |
| 5900343 | Ferrite carrier for electrophotographic development An Li--Mn type ferrite carrier for use in electrophotographic development comprising ferrite particles having a chemical composition of 3 to 15% of Li2 O, 5 to 35% of MnO and 60 to 90% of Fe2 O3, each in terms of percent b... | 05/04/1999 |
| 5798198 | Non-stoichiometric lithium ferrite carrier A non-stoichiometric lithium ferrite powder having a compositional range represented by the formula: ›(Li2 O)0.25 (Fe2 O3)0.25 !x (Fe2 O3)1.00-x where 0.35 | 08/25/1998 |
| 5789129 | Ferrite carrier for electrophotographic development A ferrite carrier for use in electrophotographic development of electrostatic latent images, which comprises a ferrite particles having an average particle size of 10 to 100 μm, a specific resistivity of 106 Ω.cm or more and a chemical compos... | 08/04/1998 |
| 5698131 | Paste for manufacturing ferrite and ferrite A paste for manufacturing ferrite is produced by dissolving the following materials: organometallic compound comprising a metal element Fe (A); organometallic compound comprising a metal element Me (Me herein denotes at least one element selected from the... | 12/16/1997 |
| 5665819 | Ferrite compositions for use in a microwave oven A ferrite composition is created by adding a high Curie temperature ferrite, such as lithium ferrite, to a soft magnetic ferrite, such as magnesium manganese zinc ferrite. The composition is used in a microwave oven dish or laminate wrap to crisp or brown... | 09/09/1997 |
| 5514463 | Magnetic recording medium A magnetic recording medium includes a non-magnetic support and a magnetic layer, The magnetic layer comprises a binder and a Co-containing iron-based metal powder dispersed in the binder, characterized in that particles of the metal powder have a greater... | 05/07/1996 |
| 5466552 | Ferrite carrier for electrophotographic developer and developer containing the carrier A ferrite carrier for electrophotographic developers which comprises a lithium-based ferrite having the general formula (Li2 O)x (Fe2 O3)100-x wherein x is not more than 16.7 mole % and a part of Li2... | 11/14/1995 |
| 5304318 | Sintered ferrite materials and chip parts To a ferrite composition of ferric oxide and divalent metal oxides are added 0.01-5.0 mol % of Li2 O and 0.01-0.5 mol % of TiO2, SnO2, and/or GeO2. The ferrite has sufficiently high density, mechanical strength ... | 04/19/1994 |
| 5091348 | Sol-gel method of making ceramics The invention concerns sol-gel techniques for making PZT-type ceramics having a perovskite-type structure and ferrite ceramics having a spinel-type structure. Colloidal hydrated oxide sols are mixed with metal salt solutions in the required concentration ... | 02/25/1992 |
| 5089159 | Magnetic substance having sharp permeability transition temperature, process for making, and apparatus A magnetic mateial which includes an impurity metal of relatively large atomic diameter such as zinc, titanium, zirconium, yttrium, or cadmium introduced uniformly therein in amount sufficient to distort its crystaline structure to alter its anisotrophy s... | 02/18/1992 |
| 5057738 | Soft magnetic MgMnZn-ferrite material, deflection ring manufactured from said material, and as a cathode-ray tube comprising a deflection coil having such a deflection ring A novel MgMnZn-ferrite material is described which is particularly suitable for deflection rings which are mounted in the deflection coil of a cathode-ray tube. The material corresponds to the formula (Li0.5 Fe0.5)p Mg | 10/15/1991 |
| 5039559 | Method of making magnetically attractable particles Magnetically attractable particles comprise a core of magnetic material encapsulated in a metal oxide coating. They may be made by emulsifying an aqueous solution or dispersion of the magnetic material or precursor, and an aqueous solution or sol of a coa... | 08/13/1991 |
| 5028348 | Magnetic material for high frequencies A magnetic material for mircowave and millimeter wave frequencies consists essentially of a basic composition and at least one additive incorporated therein, the basic composition being represented by the general formula: Lix Fey Tiz... | 07/02/1991 |
| 4985078 | Thermostable zinc ferrite color pigments containing 0.05-0.5 wt % lithium, a process for their preparation and their use Thermostable pigments for coloring stoving lacquers, coil coat lacquers, plastics, sand granulates, lime sandstone, enamel or ceramic glazes are zinc ferrite color pigments containing from 0.01 to 0.5% by weight of lithium.... | 01/15/1991 |
| 4808327 | Compositions of particulate magnetic oxides with a defect spinel structure, preparation thereof and application thereof Particulate magnetic oxide compositions based on iron oxide (III) and oxide of at least one bivalent metal selected among cobalt, iron, copper, zinc, magnesium, nickel, manganese and cadmium, characterized in that said compositions contain additionally in... | 02/28/1989 |
