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| Number | Title | Issue Date |
| 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 |
| 7378036 | Ferrite material and electronic component using the same A ferrite material of the present invention is configured such that 0.05 to 1.0 wt % of bismuth oxide in terms of Bi2O3, 0.5 to 3.0 wt % of tin oxide in terms of SnO2, and 30 to 5000 wt ppm of chromium oxide in terms of Cr2 | 05/27/2008 |
| 7368211 | Magnetic toner To provide a magnetic toner which is excellent in durability and developability even in the case of being applied to high-speed developing process or being used in a large-capacity process cartridge amount of toner in which is increased, and which has high degree of... | 05/06/2008 |
| 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 |
| 7311854 | Ferrite sintered body, manufacturing method thereof, ferrite core using same, and ferrite coil A ferrite sintered body is composed of an oxide containing, as metal element, at least Fe and Zn and at least one selected from Ni, Cu and Mn. This sintered body contain Fe of 42 to 50 mol % in terms of Fe2O3, and Zn of 15 to 35 mol % in terms ... | 12/25/2007 |
| 7294284 | Method for producing Mn-Zn ferrite The present invention provides a Mn—Zn ferrite which is low in the loss in the frequency range between a few 10 kHz and a few 100 kHz and high in the saturation magnetic flux density in the vicinity of 100° C. The present invention comprising the steps of compact... | 11/13/2007 |
| 7285835 | Low power magnetoelectronic device structures utilizing enhanced permeability materials Low power magnetoelectronic device structures and methods for making the same are provided. One magnetoelectronic device structure (100) comprises a programming line (104), a magnetoelectronic device (102) magnetically coupled to the programming... | 10/23/2007 |
| 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 |
| 7223438 | Patterning magnetic nanostructures A direct-write method for fabricating magnetic nanostructures, including hard magnetic nanostructures of barium hexaferrite, BaFe, based on nanolithographic printing and a sol-gel process. This method utilizes a conventional atomic force microscope tip, coated with ... | 05/29/2007 |
| 7195717 | Ferrite core for RFID application, method of manufacturing the same, and ferrite coil using the same A ferrite core comprising a sintered oxide containing at least 48.6 to 53.9 mol % of Fe on Fe2O3 basis, 12.3 to 35.2 mol % of Ni on NiO basis and 16.4 to 37.0 mol % of Zn on ZnO basis as metal elements, and contains a crystal phase comprising t... | 03/27/2007 |
| 7183002 | Porous ferro- or ferrimagnetic glass particles for isolating molecules Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules, under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use of id... | 02/27/2007 |
| 7160660 | Magnetic toner In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the binder resin is chiefly composed of a resin having a polyester unit synthesized using as a catalyst a tin compound represented by the following Formula (1), an... | 01/09/2007 |
| 7101488 | Electromagnetic wave absorber formed of Mn-Zn ferrite An electromagnetic wave absorber is formed of an Mn—Zn ferrite including: a spinel primary phase which contains 40.0 to 49.9 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.1 to 4.0 mol % TiO2 and/or SnO2, and the remainder consis... | 09/05/2006 |
| 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 |
| 7063801 | Composite material and method for preparing the same, and raw composite material used for preparing the same The invention relates to an improvement in tourmaline known as a functional ore. In particular, the invention provides a composite having a novel formation in which a far infrared radiation emitting property and others among tourmaline's properties are effectively e... | 06/20/2006 |
| 7037595 | Thin hafnium oxide film and method for depositing same A thin layer of hafnium oxide or stacking of thin layers comprising hafnium oxide layers for producing surface treatments of optical components, or optical components, in which at least one layer of hafnium oxide is in amorphous form and has a density less than 8 gm... | 05/02/2006 |
| 7034649 | Ferrite material, ferrite sintered body, and inductor A ferrite material having a high Q value and also having a small absolute value of αμir in a wide temperature range between −40° C. and 160° C. A ferrite material, which comprises, as main constituents, 45.5 to 48 mol % of Fe2O3, 5... | 04/25/2006 |
| 7022182 | Ferromagnetic p-type single-crystal zinc oxide material and manufacturing method thereof The present invention provides a single-crystal ZnO thin film having a high ferromagnetic transition temperature. In one aspect of the present invention, the ZnO thin film comprises a ferromagnetic p-type single-crystal zinc oxide including a transition metal elemen... | 04/04/2006 |
| 7023137 | Magnetron A magnetron comprising an anode portion having an anode cylinder and vanes, a cathode portion having a coil-shaped filament, magnetic poles disposed at the upper and lower ends of the filament, ring-shaped permanent magnets made of a Sr ferrite magnet containing Laâ... | 04/04/2006 |
| 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 |
| 6984337 | Mn—Zn ferrite containing less than 50 mol% Fe2O3 An Mn—Zn ferrite includes base components of 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, at least one of 0.1 to 4.0 mol % TiO2 and SnO2, 0.5 mol % or less Mn2O3, and the remainder consisting of... | 01/10/2006 |
| 6940381 | Mn-Zn based ferrite, magnetic core for transformer and transformer A Mn—Zn based ferrite having a main component comprised of 51 to 54 mol % of an iron oxide in Fe2O3 conversion, 14 to 21 mol % of a zinc oxide in ZnO conversion and the rest of a manganese oxide, wherein a content (α [ppm]) of cobalt oxide i... | 09/06/2005 |
| 6933799 | Method of controlling intermodulation distortion of non-reciprocal device A non-reciprocal device includes at least one ferrimagnetic member (21 or 22). By controlling the FMR linewidth ΔH of the ferrimagnetic members (21 and 22), intermodulation distortion is controlled. ... | 08/23/2005 |
| 6911889 | High frequency filter device and related methods A filter device may include a plurality of ferrite filters laminated together in vertically stacked relation, where each ferrite filter may include a pair of ferrite layers laminated together in vertically stacked relation and a lateral conductor extending therebetw... | 06/28/2005 |
| 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 |
| 6905629 | Mn-Zn ferrite, transformer magnetic core and transformer An Mn—Zn ferrite wherein 0 to 5000 ppm of a Co oxide in a Co3O4 conversion is contained in a basic component constituted by Fe2O3: 51.5 to 57.0 mol % and ZnO: 0 to 15 mol % (note that 0 is not included) wherein the rest ... | 06/14/2005 |
| 6899819 | YIG magnetic ceramic composition for microwave application and preparation method thereof The present research provides a high-density magnetic ceramic composition for microwave application and a preparation method thereof. The magnetic ceramic composition of this research includes Yttrium iron garnet (YIG, Y3Fe5O12) as i... | 05/31/2005 |
| 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 |
| 6875367 | Attaching components to a printed circuit card Coupling components to an underlying substrate using a composition of a polymer and magnetic material particles. Upon applying the composition between the component and the printed circuit board, the composition may be subjected to a magnetic field to align the magn... | 04/05/2005 |
| 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 |
| 6858155 | Ferrite materials, methods of preparing the same, and products formed therefrom Ferrite materials, methods of forming the same, and products formed therefrom are disclosed, comprising, as main components, an iron oxide ranging from 55.5 to 58.0 mole percent calculated as Fe2O3, an amount of manganese oxide ranging from 38.... | 02/22/2005 |
| 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 |
| 6788185 | Powder core and high-frequency reactor using the same A powder core is obtained by compaction-forming magnetic powder. The magnetic powder is an alloy comprising 1-10 wt % Si, 0.1-1.0 wt % O, and balance Fe. An insulator comprising SiO2 and MgO as main components is interposed between powder particles having... | 09/07/2004 |
| 6780555 | Black magnetic iron oxide particles and magnetic toner Black magnetic iron oxide particles having an average particle diameter of 0.05 to 1.0 μm have a three-phase structure comprising: a core portion containing at least one metal element other than Fe selected from the group consisting of Mn, Zn, Cu, Ni, Cr, Cd... | 08/24/2004 |
| 6773619 | Magnetic core for transformer, Mn-Zn based ferrite composition and methods of producing the same An Mn—Zn based ferrite composition having a main component comprised of Fe2O3: 51.5 to 54.5 mol %, ZnO: 19.0 to 27.0 mol % and the rest of substantially MnO and a first sub component comprised of 0.002 to 0.040 wt % of SiO2, 0.003 ... | 08/10/2004 |
| 6767478 | Mn-Zn ferrite and coil component using same The Mn—Zn ferrite of the present invention contains basic components of 44.0 to 50.0 mol % (50.0 mol % is excluded) Fe2O3, 4.0 to 26.5 mol % ZnO and the remainder MnO, and has a real part ε′ of complex relative permittivity of 20,000 or le... | 07/27/2004 |
| 6767396 | Process for the preparation of aqueous magnetic ink character recognition ink-jet ink compositions A process for preparing an aqueous ink-jet ink composition for MICR applications is provided comprising preparing a metal oxide pre-dispersion combined with an aqueous ink-jet ink composition, wherein the metal oxide pre-dispersion contains metal oxide pigment or pa... | 07/27/2004 |
| 6761747 | Dispersion containing pyrogenically manufactured abrasive particles with superparamagnetic domains An aqueous dispersion containing abrasive particles comprises abrasive particles having superparamagnetic metal oxide domains in a non-magnetic metal oxide or non-metal oxide matrix. The abrasive particles of the aqueous dispersion can have an average particle size ... | 07/13/2004 |
| 6758986 | Magnet powder and method for preparations thereof The production is performed by calcining ferrite magnetic powder in which La is substituted for part of Sr and Ti, Zn, and Co are substituted for part of Fe at temperatures of 1100° C. to 1450° C. The magnetization is improved by substituting Zn for part of Fe, an... | 07/06/2004 |
