Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8343375 | Ferrite powder and its production method A ferrite powder for producing a ferrite sintered body is provided, the ferrite powder having a median diameter D50 [μm] in a range from 0.1 to 0.8 μm, a degree of spinel formation in a range from 45 to 90%, and a remanent magnetization Br per unit mass... | 01/01/2013 |
| 7527744 | NiCuZn-base ferrites and electronic parts using the same An NiCuZn-base ferrite of the invention comprises as main components an iron oxide in an amount of 45.0 to 49.0 mol % on Fe2O3 basis, an copper oxide in an amount of 5.0 to 14.0 mol % on CuO basis and a zinc oxide in an amount of 1.0 to 32.0 mo... | 05/05/2009 |
| 7524433 | Ferrite material The temperature properties of the initial permeability of a Ni—Cu—Zn based ferrite material are improved while the degradation of the magnetic properties of the ferrite material is being suppressed. The ferrite material is formed of a sintered body comprising, a... | 04/28/2009 |
| 7399571 | Multilayered articles and method of manufacture thereof Disclosed herein is multilayered sheet comprising a core layer comprising a thermoplastic polymer and an IR absorbing additive; wherein the IR absorbing additive is a metal oxide; and a first cap layer comprising a thermoplastic polymer and an electromagnetic radiat... | 07/15/2008 |
| 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 |
| 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 |
| 7326360 | Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications Magnetostrictive material based on cobalt ferrite is described. The cobalt ferrite is substituted with transition metals (such manganese (Mn), chromium (Cr), zinc (Zn) and copper (Cu) or mixtures thereof) by substituting the transition metals for iron or cobalt to f... | 02/05/2008 |
| 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 |
| 7294192 | Heat-stable zinc ferrite colour pigments, process for preparing them and their use The present invention relates to zinc ferrite colour pigments, including a process for preparing and using them and, more particularly, the present invention relates to light-coloured zinc ferrite colour pigments having enhanced thermal stability, a magnesium conten... | 11/13/2007 |
| 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 |
| 7211362 | Fuser member with tunable gloss level and methods and apparatus for using the same to fuse toner images Disclosed are fuser members, apparatus and methods which employ compositions that can be varied to provide a fused toner image with a selected gloss level. In embodiments, the apparatus and methods employ a fusing member having an outer contact surface thereon which... | 05/01/2007 |
| 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 |
| 7163667 | Production process for oxide magnetic material and oxide magnetic material A production process for an oxide magnetic material comprising the steps of blending raw material powder so as to take the composition of a hexagonal ferrite including: at least one kind of an element A selected from the group consisting of Ba, Sr and Ca; Co and Cu;... | 01/16/2007 |
| 7118728 | Method and apparatus for making ferrite material products and products produced thereby A method for making ferrite powder may include providing ferrite feed materials in a form of particles having different sizes and irregular shapes, and exposing the ferrite feed materials to a plasma to provide a more spherical shape to irregularly shaped particles ... | 10/10/2006 |
| 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 |
| 7061355 | Ferrite core, CATV equipment and bi-directional CATV system A ferrite core for use in coupling transformers and distributing transformers in CATV equipments such as couplers, distributors and amplifiers, the ferrite core being made of a ferrite having a saturation magnetostriction |λS| of 8×10−6 or ... | 06/13/2006 |
| 7059768 | Standards for the calibration of a vacuum thermogravimetric analyzer for determination of vapor pressures of compounds The invention provides a set of standards for accurately calibrating a vacuum thermogravimetric analyzer (VTGA). The invention solves the problem of calibrating a VTGA by using the actual magnetic transitions and associated transition temperatures, or Curie temperat... | 06/13/2006 |
| 7025946 | Method for producing soft magnetic hexagonal ferrite sintered material and soft magnetic hexagonal ferrite sintered material A soft hexagonal ferrite sintered material includes crystal particles of M-type hexagonal ferrite corresponding to a general chemical formula MFe12O19 wherein M is at least one element selected from the group consisting of Ba, Sr and Pb. Crysta... | 04/11/2006 |
| 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 |
| 6984338 | Mn-Zn ferrite containing less than 50 mol % FeO An Mn—Zn ferrite includes base components of 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.8 mol % or less Mn2O3, and the remainder consisting of MnO, and contains 0.20 (0.20 excluded) to 1.00 mass % CaO as additive... | 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 |
| 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 |
| 6872325 | Polymeric resin bonded magnets Briefly, in accordance with one embodiment of the present invention, a process for making a magnetic composite which comprises providing a polymeric resin and a magnetic powder, the magnetic powder having a mean particle size with a value for standard deviation that... | 03/29/2005 |
| 6814883 | High frequency magnetic material and high frequency circuit element including the same A high frequency magnetic material includes a Y or M type hexagonal ferrite, wherein the hexagonal ferrite is expressed by the composition formula (1-a-b)(Ba1-xSrx)O.aMeO.bFe2O3, where Me is at least one selected from the ... | 11/09/2004 |
| 6800215 | Low-loss magnetic oxide material and method for making A Ni type ferrite material of a low magnetic loss. The Ni type ferrite material is formed by adding MnO2 in an amount of 0.1 to 10 mol % to a ferrite material of a composition containing Fe2O3 in 40 to 50 mol %, ZnO in 20 to 33 mol %... | 10/05/2004 |
| 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 |
| 6790379 | 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 for an indu... | 09/14/2004 |
| 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 |
| 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 |
| 6749768 | Magnetic ferrite powder, magnetic ferrite sinter, layered ferrite part, and process for producing layered ferrite part Provided is magnetic ferrite powder in which a peak intensity ratio of Z phase (M3Me2Fe24O41: M=one or more kinds of alkaline-earth metal, Me=one or more kinds from Co, Ni, Mn, Zn, Mg and Cu) of hexagonal ferrite is 30% or... | 06/15/2004 |
| 6736990 | Ferrite material There can be provided an NiCuZn-based ferrite material containing an iron oxide, a copper oxide, zinc oxide and a nickel oxide in predetermined amounts as main components and a bismuth oxide, a silicon oxide, magnesium oxide and a cobalt oxide in predetermined amoun... | 05/18/2004 |
| 6695972 | Formula and preparation method for multi-layer chip inductor material used in very high frequencies This invention relates to the formula and preparation method for a multi-layer chip inductor material used in very high frequencies. The main composition of this material is planar hexagonal soft magnetic ferrite, and ingredient is low temperature sinteri... | 02/24/2004 |
| 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 |
| 6660179 | Sintered body and high-frequency circuit component There is provided a sintered body at least 80% of which is constituted of a Y-type hexagonal ferrite. The sintered body contains, as main components, a cobalt oxide, a copper oxide, an iron oxide and AO (AO is at least one of BaO or SrO) in predetermined ... | 12/09/2003 |
| 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 |
| 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 |
| 6645394 | High frequency magnetic material ceramic composition and irreversible circuit component A high frequency magnetic material ceramic composition including materials having the general formula (Ca, A)z Cux B8-x-z O12 is prepared. A represents Y and/or at least one element selected from the rare earth ... | 11/11/2003 |
