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Daisuke Fukuda

Daisuke Fukuda, Kyoto JP

Patent application numberDescriptionPublished
20110002073OUTPUT BUFFER CIRCUIT AND OUTPUT BUFFER SYSTEM - An output buffer circuit of the present invention includes: a first output circuit having a first upper switching element and a first lower switching element, the first upper switching element having main terminals, one of the main terminals being maintained at a first voltage, the first lower switching element having main terminals, one of the main terminals being connected to the other main terminal of the upper switching element, the other main terminal of the first lower switching element being maintained at a second voltage, a portion where the other main terminal of the first upper switching element and one of the main terminals of the first lower switching element are connected to each other constituting an output portion for output to outside; a second output circuit having an output terminal connected to the output portion of the first output circuit; and a short-circuit detecting circuit configured to detect a short circuit of the output portion of the first output circuit. The output buffer circuit of the present invention is configured such that: when starting up the output buffer circuit, the second output circuit and the short-circuit detecting circuit are activated before activating the first output circuit; when the short circuit of the output portion is not detected, the first output circuit is activated; and when the short circuit of the output portion is detected, the first output circuit is not activated.01-06-2011

Daisuke Fukuda, Kirishima-Shi JP

Patent application numberDescriptionPublished
20090059471Multilayer Ceramic Capacitor and Production Method of the Same - The invention provides a multilayer ceramic capacitor comprising a capacitor body composed by alternately layering dielectric layers and inner electrode layers, and each of the above mentioned dielectric layers contains a plurality of crystal particles, and grain boundary phases comprising interfacial grain boundaries and triple point grain boundaries formed among a plurality of the crystal particles adjacent to one another, and Si—Ba—O compound being formed in 5% or more of the triple point grain boundaries in the entire triple point grain boundaries per unit surface area of the dielectric layer. Accordingly, the multilayer ceramic capacitor has high relative permittivity and is high the temperature property and highly accelerated life test property.03-05-2009
20090219666Dielectric Ceramic, Manufacturing Method Thereof, And Multilayer Ceramic Capacitor - A dielectric ceramic whose primary crystal grains 09-03-2009
20100188797LAMINATED CERAMIC CAPACITOR - A crystal constituting a dielectric porcelain, comprised of a first crystal group composed of crystal grains of 0.2 atomic % or less calcium concentration and a second crystal group composed of crystal grains of 0.4 atomic % or more calcium concentration, wherein the ratio of concentration of each of magnesium and a first rare earth element contained in a center portion to that contained in a surface layer portion of crystal grains constituting the first crystal group is greater than the corresponding concentration ratio of crystal grains constituting the second crystal group, and wherein on a polished surface resulting from polishing of the surface of the dielectric porcelain, when the area of crystal grains of the first crystal group is referred to as a and the area of crystal grains of the second crystal group referred to as b, the ratio of b/(a+b) is in the range of 0.5 to 0.8.07-29-2010

Patent applications by Daisuke Fukuda, Kirishima-Shi JP

Daisuke Fukuda, Kawasaki JP

Patent application numberDescriptionPublished
20090113373Layout design apparatus, layout design method, and computer product - A layout design apparatus that limits the maximum wiring density and the maximum edge length of partial regions when determining wiring layout. After determining the wiring layout, the layout design apparatus inserts a dummy into a partial region having a low wiring density and thereby, the minimum wiring density and the minimum edge length of the partial regions are limited. Thus, the respective wiring densities and respective edge lengths of the partial regions are constrained within a constant range and irregularities in the substrate surface after polishing can be suppressed.04-30-2009
20090246893SEMICONDUCTOR INTEGRATED CIRCUIT MANUFACTURING PROCESS EVALUATION METHOD - A method for evaluating a process of manufacturing a semiconductor integrated circuit including a deposition step and a polishing step after the deposition step, the method includes: dividing the semiconductor integrated circuit into a plurality of areas; determining a deposition height after the deposition step for each of the areas; and determining a risk value for each of the areas on the basis of a difference in the deposition height between each of the areas and its adjacent areas.10-01-2009
20100042392PLATED FILM THICKNESS CALCULATING METHOD AND PLATED FILM THICKNESS CALCULATING DEVICE - A computer readable recording medium stores therein a plated film thickness calculating program for a semiconductor integrated circuit producing process in which a plating treatment, a polishing treatment and an over-polishing treatment are performed. The plated film thickness calculating program performing a process includes simulating the plating treatment of plating the surface of the substrate for a given thickness of the conductor; calculating a thickness of the conductor to be removed by the polishing treatment until at least a part of the plateaus appears; calculating a maximum thickness of the conductor to be remained on any part of the plateaus after performing the polishing treatment; and repeating the simulating, the thickness calculation and the maximum thickness calculation by changing the given thickness until a minimum of the given thickness is determined in which the maximum thickness of the remaining conductor becomes less than a predetermined level.02-18-2010
20100152875ESTIMATION APPARATUS AND ESTIMATION METHOD - An estimation apparatus for estimating a formation of a plurality of wiring layers for an integrated circuit to be manufactured by laminating the wiring layers each formed through a deposition process of a wiring material on a substrate and subsequently polishing the deposited wiring material, the apparatus includes a deposition estimator, a polishing estimator, and an adjuster. The apparatus includes an optimizer configured to optimize distribution of the height of the wiring material for each of the wiring layers within an acceptable range by controlling the adjuster to generate various combinations of adjusted patterns of the wiring layers and by controlling the deposition estimator and the polishing estimator to perform estimation of distribution of deposition height of the wiring material and distribution of the wiring material to be remained after polishing for each of the wiring layers, respectively, for each of the combinations of the adjusted patterns.06-17-2010

Patent applications by Daisuke Fukuda, Kawasaki JP

Daisuke Fukuda, Kagoshima JP

Patent application numberDescriptionPublished
20090207556DIELECTRIC CERAMIC AND CAPACITOR - The invention relates to a ceramic dielectric material and to capacitors including the ceramic dielectric material. The ceramic dielectric material of the invention exhibits a high relative dielectric constant and a stable temperature characteristic of the relative dielectric constant.08-20-2009
20100067171MULTILAYERED CERAMIC CAPACITOR - [Problems] To provide a multilayered ceramic capacitor which in a high-temperature loading test, can be inhibited from decreasing in insulation resistance with time and which can have high insulating properties even when produced without via a reoxidation step.03-18-2010
20100142120DIELECTRIC CERAMIC AND CAPACITOR - A dielectric ceramic includes crystal grains containing barium titanate as a main component, magnesium, a rare-earth element, and manganese, wherein the crystal grains have a cubic crystal structure; and the dielectric ceramic contains, per mole of barium, 0.033 to 0.085 mol of magnesium in terms of MgO, 0.1 to 0.2 mol of the rare-earth element (RE) in terms of RE06-10-2010

Daisuke Fukuda, Kirishima JP

Patent application numberDescriptionPublished
20100014214DIELECTRIC CERAMICS AND MULTILAYER CERAMIC CAPACITOR - A dielectric ceramics comprising a high dielectric constant is disclosed. The dielectric ceramics also comprises a relative dielectric constant with a stable temperature dependence and an insulation resistance with a reduced voltage dependence. The dielectric ceramics can be used to form a multilayer ceramic capacitor that has a long life.01-21-2010

Daisuke Fukuda, Hiroshima-Shi JP

Patent application numberDescriptionPublished
20090045269DIESEL ENGINE AND FUEL INJECTION NOZZLE THEREFOR - A fuel injection nozzle for a diesel engine. The fuel injection nozzle may include a plurality of injection hole groups, each having two injection holes respectively. A distance between the two injection holes, an angle between longitudinal axes of the two injection holes and an angle between horizontal axes of said two injection holes of each injection hole group are each set such that fuel sprays injected from said two injection holes will form a single fuel spray cloud after the fuel sprays collide with a side wall of a combustion chamber formed in a top surface of a piston of the engine, and such that the distance between collision points of the fuel sprays will be in a predetermined range in which a penetration force of said fuel spray cloud along a longitudinal direction of said combustion chamber received after collision with said wall of said combustion chamber is at or near a predetermined maximum value.02-19-2009

Daisuke Fukuda, Osaka JP

Patent application numberDescriptionPublished
20090033268POWER SUPPLY SYSTEM WITH FUNCTION OF SHORT CIRCUIT DETECTION - There are provided upper and lower switching elements 02-05-2009

Daisuke Fukuda, Iwate JP

Patent application numberDescriptionPublished
20110144947Online Diagnostic Method and Online Diagnostic System for Geothermal Generation Facility - An online diagnostic system for a geothermal generation facility is discloses that includes: an automatic steam measurement device for measuring a characteristic of steam to be supplied to a steam turbine from a steam-water separator at the geothermal generation facility that outputs analysis data. A monitor•control device controls an operation of the geothermal generation facility while monitoring the geothermal generation facility. A diagnostic device performs at least one of an evaluation of a steam characteristic at the geothermal generation facility, an evaluation of the steam-water separator, and an evaluation of pulsation and confluence of a production well based on the analysis data from the automatic steam measurement device and performance data of the geothermal generation facility from the monitor•control device. An operating status of the geothermal generation facility is diagnosed.06-16-2011