Assignee: Fuji Electric Device Technology Co., Ltd.

Location: JP
No. of patents: 75

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Number	Title	Issue Date
8039133	Magnetic recording medium and method for manufacturing the same A magnetic recording medium, and method of manufacturing the same, is provided with excellent recording performance by employing a granular magnetic layer having a specified composition. A magnetic recording medium according to the present invention comprises a nonm...	10/18/2011
7993764	Perpendicular magnetic recording medium and the method of manufacturing the same A perpendicular magnetic recording medium includes a soft magnetic backing layer, an underlayer, a nonmagnetic intermediate layer, and a magnetic recording layer sequentially deposited on a nonmagnetic substrate. The underlayer can contain cobalt, nickel, and iron a...	08/09/2011
7972716	Perpendicular magnetic recording medium A magnetic recording medium exhibiting a high recording density performance is disclosed. The perpendicular magnetic recording medium has a soft magnetic underlayer, a first seed layer, a second seed layer, an intermediate layer, a granular magnetic recording layer,...	07/05/2011
7923135	Magnetic recording medium having a patterned exchange-coupling control layer and method of manufacturing same A magnetic recording medium is formed by stacking in order, on a nonmagnetic base, at least an underlayer, magnetic recording layer, and protective layer. The magnetic recording layer includes a plurality of magnetic layers and an exchange-coupling control layer, an...	04/12/2011
7910233	Magnetic recording medium for thermally assisted recording A magnetic recording medium for use in a thermally assisted recording system is disclosed. The magnetic recording medium comprises at least a magnetic layer, a protective layer and a lubricant layer formed on a nonmagnetic substrate, wherein a lubricant of the lubri...	03/22/2011
7894152	Perpendicular recording discrete track medium and servo pattern magnetization method for same A servo pattern magnetization method is provided, having full-amplitude servo signals, to eliminate the need for intensity modification and waveform shaping during servo signal reading, and to improve the precision of head positioning and enable an increase in track...	02/22/2011
7879468	Magnetic recording media and method of manufacture of the same A magnetic recording medium is disclosed in which there is no degradation of magnetic characteristics at the time of manufacture, such as is seen in proposed discrete-track media or patterned media. The medium can be manufactured by a simple method and results in ex...	02/01/2011
7875374	Substrate for perpendicular magnetic recording media and perpendicular magnetic recording media using same Substrates for perpendicular magnetic recording media, and perpendicular magnetic recording media using such substrates, are disclosed. By setting the substrate inclination angle, or a parameter related to substrate shape relating to this angle, within an appropriat...	01/25/2011
7751209	Switching power supply equipment A switching power supply equipment has a function to protect a power supply from abnormalities such as an output short-circuit. An output signal from an error amplification circuit to amplify a difference voltage between an output voltage and a predetermined voltage...	07/06/2010
7746672	Switching power supply apparatus A switching power supply apparatus which includes a DC power supply, an isolation transformer having primary, secondary and tertiary windings, and a switching element, and in which, by turning the switching element on and off, the high-frequency voltage appearing in...	06/29/2010
7723846	Power semiconductor module and method of manufacturing the same A power semiconductor module and a method of manufacture thereof includes a lead frame carrying lead having inner and outer lead portions. The outer lead portions, which are connected by soldering to semiconductor chips simultaneously, eliminate the need for using b...	05/25/2010
7723817	Semiconductor device and manufacturing method thereof The shape of a tip of an insulating material of an insulating isolation region is provided as being a concave one recessed below the back surface of an n-semiconductor substrate. This reduces the electric field strength at the corner at which the bottom of the n-sem...	05/25/2010
7719859	Switching power supply device and drive circuit thereof A switching power supply device has a drive circuit that can minimize a loss while being compact. The drive circuit turns on and off a high-side switching element (MOSFET) according to a positive or negative voltage developed at a tertiary winding of a transformer. ...	05/18/2010
7719092	Power semiconductor module The power semiconductor module includes a module package housing power semiconductor devices therein and a magnetic core set around the module package, such that magnetic core surrounds the power semiconductor devices such as IGBTs. Alternatively, the magnetic core ...	05/18/2010
7714363	Semiconductor integrated circuit for driving the address of a display device Wiring of a PDP address driver IC is disclosed which affords an adequate permitted current capacity. In the PDP address driver IC that drives the PDP, a layer, in which a planar high voltage ground wiring layer and a planar high voltage power wiring layer are formed...	05/11/2010
7714353	Insulated gate semiconductor device and the method of manufacturing the same A trench-type insulated-gate semiconductor device is disclosed that includes unit cells having a trench gate structure that are scattered uniformly throughout the active region of the device. The impurity concentration in the portion of a p-type base region, sandwic...	05/11/2010
7713794	Manufacturing method of a semiconductor device A manufacturing method of a semiconductor device includes the steps of forming an insulating film having a prescribed repetition pattern on one surface of a semiconductor substrate and then depositing semiconductor layers on the one surface of the semiconductor subs...	05/11/2010
7705443	Semiconductor device with lead frame including conductor plates arranged three-dimensionally An electrical connection inside a semiconductor device is established by lead frames formed of plural conductor plates. The lead frames are disposed three-dimensionally so that the respective weld parts thereof are exposed toward a laser light source used in the las...	04/27/2010
RE41282	Perpendicular magnetic recording medium and a method of manufacturing the same A perpendicular magnetic recording medium has a granular magnetic layer and a nonmagnetic underlayer of a metal or an alloy having a hexagonal close packed (hcp) crystal structure. A seed layer of a metal or an alloy of a face-centered cubic (fcc) crystal structure ...	04/27/2010
7700971	Insulated gate silicon carbide semiconductor device An insulated gate silicon carbide semiconductor device is provided having small on-resistance. The device combines a static induction transistor structure with an insulated gate field effect transistor structure. The advantages of both the SIT structure and the insu...	04/20/2010
7692239	MIS-type semiconductor device A MIS-type semiconductor device has reduced ON-resistance by securing an overlapping area between the gate electrode and the drift region, and has low switching losses by reducing the feedback capacitance. The MIS-type semiconductor device includes a p-type base reg...	04/06/2010
7682991	Method of manufacturing silicon carbide semiconductor device A method of manufacturing a silicon carbide semiconductor device includes forming a trench for a MOS gate in an SiC substrate by dry etching. Thereafter, the substrate with the trench is heat treated. The heat treatment includes heating the substrate in an Ar gas at...	03/23/2010
7626856	Magnetic recording element A magnetic recording element is disclosed for which current density required for writing is low and structure of the element is simple. It comprises a ferromagnetic fine wire formed on a Si substrate, current electrodes that contact ends of the ferromagnetic fine wi...	12/01/2009
7606082	Semiconductor circuit, inverter circuit, semiconductor apparatus, and manufacturing method thereof The semiconductor circuit includes a voltage-controlled semiconductor device (N)N, the resistance value of which is controllable with a high voltage, the drain terminal of the N can be connected to the gate terminal (control terminal) of an output semiconductor devi...	10/20/2009
7602022	Surge voltage protection diode with controlled p-n junction density gradients To prevent the destruction of a semiconductor element due to negative resistance, and to reduce the dynamic resistance of a static electricity prevention diode, the ratio of the maximum electric field intensity during an avalanche and the average electric field in a...	10/13/2009
7572683	Semiconductor device, the method of manufacturing the same, and two-way switching device using the semiconductor devices A semiconductor device is disclosed that reduces the reverse leakage current caused by reverse bias voltage application and reduces the on-voltage of the IGBT. A two-way switching device using the semiconductor devices is provided, and a method of manufacturing the ...	08/11/2009
7538408	Inhibition of parasitic transistor operation in semiconductor device A semiconductor device includes a surface layer on the side of a first principal surface of a p-semiconductor substrate, a high side n-isolation-diffused region and a low side n-isolation-diffused region formed apart from each other by a distance that is shorter tha...	05/26/2009
7517777	Method of manufacturing semiconductor device and semiconductor device formed by the method The method of manufacturing a semiconductor device includes forming a p-type anode layer and an anode electrode on one major surface of an n-type semiconductor substrate, irradiating an electron beam to the semiconductor substrate to introduce crystal defects into t...	04/14/2009
7510788	Perpendicular magnetic recording medium utilizing a first cobalt magnetic layer and a second Pd-SiO layer and method of manufacturing same A perpendicular magnetic recording medium is disclosed that exhibits reduced media noise and enhanced thermal stability of recorded magnetization, and thus provides a medium of high recording density and excellent read-write performance. The perpendicular magnetic r...	03/31/2009
7498093	Perpendicular magnetic recording medium and method for manufacturing the same There is provided a perpendicular magnetic recording medium which causes low media noise and achieves preferable read/write performance. A perpendicular magnetic layer is constructed such that first magnetic layers formed of Co or Co containing an oxide and second m...	03/03/2009
7494726	Perpendicular magnetic recording medium, method of manufacturing same, and magnetic recording device A perpendicular medium is disclosed in which an isolation structure of an underlayer is formed using a simple method as in a conventional manufacturing process for a medium of continuous films. The method suppresses dispersion of alignment and reduced magnetic clust...	02/24/2009
7492137	Series regulator and differential amplifier circuit thereof A series regulator for supplying a stable output voltage to a load has a differential amplifier circuit and an output stage. The output stage has an output control transistor that supplies the output voltage in accordance with a control signal, and a voltage divider...	02/17/2009
7491418	Method of manufacturing a magnetic recording medium and the magnetic recording medium formed thereby A method of manufacturing a magnetic recording medium that exhibits high performance and high reliability includes forming a liquid lubricant layer capable of high coverage while retaining a film thickness of 1 nm to 2 nm. The magnetic recording medium includes an u...	02/17/2009
7489223	Inductor and method of manufacturing the same An inductor and a method of manufacture results in external electrodes that prevent generation of flashes. The inductor has a ferrite substrate, external electrodes, and a coil. The cross-sectional area of the external electrodes extending across the cutting line is...	02/10/2009
7489222	Microminiature power converter and thin film magnetic induction device thereof A microminiature power converter includes a thin film magnetic induction device including a ferrite substrate and a solenoid coil conductor extending along the first and second principal planes of the substrate with the conductor extending through through-holes form...	02/10/2009
7476942	SOI lateral semiconductor device and method of manufacturing the same The SOI lateral semiconductor device includes a semiconductor region of a first conductivity type, a buried oxide film layer in the semiconductor region, a thin active layer on the buried oxide film layer, an anode region in the thin active layer, and a drain layer ...	01/13/2009
7462911	Insulated gate semiconductor device A trench IGBT is disclosed which meets the specifications for turn-on losses and radiation noise. It includes a p-type base layer divided into different p-type base regions by trenches. N-type source regions are formed in only some of the p-type base regions. There ...	12/09/2008
7446639	Micro power converter and method of manufacturing same A micro power converter is provided in which magnetic flux passing outside of external electrodes and second connection conductors is decreased to reduce noises, and at the same time, adhesiveness of molding resin is preserved to provide excellent humidity resistanc...	11/04/2008
7436024	Semiconductor device and method of manufacturing the same A lateral MOSFET and a method of forming thereof includes a p-type semiconductor substrate, a first n-type well in the surface portion of the semiconductor substrate, an n+-type drain region in the first n-type well, a p-type well in the first n-type well...	10/14/2008
7425757	Semiconductor power module A semiconductor power module includes a filter element made of a magnetic material that can be exchanged as required, while providing a package having a compact size. The power module can be used for a power conversion device for providing power conversion of DC pow...	09/16/2008

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Assignee: Fuji Electric Device Technology Co., Ltd.