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Hiroshi Nagata
Hiroshi Nagata, Hitachi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100321847 | SEMICONDUCTOR POWER CONVERSION APPARATUS - A semiconductor power conversion apparatus capable of protecting an IGBT from an overvoltage by supplying a sufficient gate current to the gate of the IGBT. The IGBT is protected from the overvoltage by connecting clamping elements connected in series between a collector of the IGBT and the gate thereof, and by connecting a resistor to each of different junction points between the clamping elements connected in series. | 12-23-2010 |
Hiroshi Nagata, Tsukuba-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090281072 | Diaminopyrimidinecarboxamide Derivative - A compound which may be used for the prevention or treatment of respiratory diseases in which STAT 6 is concerned, particularly asthma, chronic obstructive pulmonary disease and the like is provided. | 11-12-2009 |
| 20100224341 | SECONDARY COOLING APPARATUS AND CASTING APPARATUS - A secondary cooling apparatus capable of gradually cooling cast thin pieces and a cast apparatus that uses it are provided. A comb tooth-shaped device is arranged inside a vessel of the secondary cooling apparatus; the cast thin pieces are piled on the comb tooth-shaped device; and crushed small pieces are placed thereon. After the cast thin pieces and the crushed small pieces are gradually cooled, the cast thin pieces are crushed by a pressing device. The crushed small pieces are rapidly cooled by being in contact with a surface of a bottom wall and side faces of cooling teeth. Nd-rich phases or R-rich phases can be annealed by the gradual cooling, and after the crushed small pieces are rapidly cooled to its oxidation temperature or below, the crushed small pieces can be taken out to the air atmosphere. | 09-09-2010 |
| 20110126670 | METHOD FOR REFINING METAL - A method for refining a metal such that, after a base material derived from the metal is melted by being irradiated with an electron beam, the base material is refined by solidifying the base material which was melted, the method including: a step melting all of the base material by irradiating the electron beam over an entire surface of the base material loaded inside a water-cooled crucible placed inside a high vacuum atmosphere; a step gradually solidifying the base material which was melted from a molten metal bottom part of the base material which was melted toward a molten metal surface part at a side being irradiated by the electron beam by gradually weakening an output of the electron beam while maintaining a condition in which the base material which was melted is irradiated with the electron beam; and a step removing a molten metal part which is not solidified, after the base material which was melted is solidified to a certain percentage. | 06-02-2011 |
| 20110132142 | SILICON PURIFICATION METHOD - A silicon purification method includes a solidification purification step in which metal impurities are removed by irradiating a base material made of metallic silicon with an electron beam. The solidification purification step sequentially includes: preparing the base material to be purified at one time, loading a part of the base material into a water-cooled crucible, irradiating, with the electron beam, the entire area of the part of the loaded base material that is disposed under a high vacuum atmosphere, and thereby fully melting the part of the base material; gradually solidifying the molten part of the base material from a molten metal bottom thereof toward a molten metal surface thereof by gradually weakening an output of the electron beam so that the solidification proceeds until the solidifying portion occupies a first predetermined ratio of the total of the base material; further loading the remnant of the base material into the water-cooled crucible, and fully melting the remnant of the base material by irradiating the entire area of the remnant of the base material with the electron beam; gradually solidifying the molten metal portion from a bottom thereof toward a molten metal surface thereof by gradually weakening an output of the electron beam so that the solidification proceeds until the solidifying portion occupies a second predetermined ratio of the total of the molten metal portion; and removing an unsolidified molten metal portion. | 06-09-2011 |
Hiroshi Nagata, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20090131666 | ACYLAMINOPIPERIDINE COMPOUND - [Problem] To provide a compound which has an excellent activity to modulate the functions of CCR4 or TARC and/or MDC and can be used for the prevention and/or treatment of various inflammatory diseases, allergic diseases, autoimmune diseases and the like. | 05-21-2009 |
| 20100009991 | POLYCYCLIC ACID COMPOUNDS USEFUL AS CRTH2 ANTAGONISTS AND ANTIALLERGIC AGENTS - The present invention relates to a novel compound or a salt thereof, which is useful as a CRTH2 antagonist, especially as a medicament for disorder that participates eosinophil, for example, allergic disorder such as asthma, allergic rhinitis, allergic dermatitis, conjunctival inflammation, hives, eosinophilic bronchitis, food allergy, inflammation of the nasal sinuses, multiple sclerosis, angiitis, or chronic obstructive pulmonary disease (COPD) and the like. | 01-14-2010 |
| 20100105658 | AZA-BRIDGED-RING COMPOUND - [Problems] Provided is a compound which has an antagonistic action on a muscarinic M | 04-29-2010 |
| 20100222329 | 2-ACYLAMINOTHIAZOLE DERIVATIVE OR SALT THEREOF - A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia. | 09-02-2010 |
| 20100222361 | 2-ACYLAMINOTHIAZOLE DERIVATIVE OR SALT THEREOF - A 2-acylaminothiazole derivative or a pharmaceutically acceptable salt thereof having an excellent effect of proliferating human c-mpl-Ba/F3 cells and an activity of increasing platelets based on the effect of promoting the formation of megakaryocytic colonies. A compound or a pharmaceutically acceptable salt thereof useful in treating thrombocytopenia. | 09-02-2010 |
Hiroshi Nagata, Kanagawa JP
| Patent application number | Description | Published |
|---|---|---|
| 20080257716 | Coating Method and Apparatus, a Permanent Magnet, and Manufacturing Method Thereof - A film is formed at a high rate on the surface of an iron-boron-rare-earth-metal magnet having a given shape, while effectively using dysprosium or terbium as a film-forming material. Thus, productivity is improved and a permanent magnet can be produced at low cost. A permanent magnet is produced through a film formation step in which a film of dysprosium is formed on the surface of an iron-boron-rare-earth-metal magnet of a given shape and a diffusion step in which the magnet coated is subjected to a heat treatment at a given temperature to cause the dysprosium deposited on the surface to diffuse into the grain boundary phase of the magnet. The film formation step comprises: a first step in which a treating chamber where this film formation is performed is heated to vaporize dysprosium which has been disposed in this treating chamber and thereby form a dysprosium vapor atmosphere having a given vapor pressure in the treating chamber; and a second step in which a magnet kept at a temperature lower than the internal temperature of the treating chamber is introduced into this treating chamber and the dysprosium is selectively deposited on the magnet surface based on a temperature difference between the treating chamber and the magnet until the magnet temperature reaches a given value. | 10-23-2008 |
| 20100159129 | COATING METHOD AND APPARATUS, A PERMANENT MAGNET, AND MANUFACTURING METHOD THEREOF - The object of the present invention is to improve the productivity of a permanent magnet and to manufacture it at a low cost by effectively coating Dy and Tb on a surface of the magnet of Fe—B-rare earth elements having a predetermined configuration. The permanent magnet of the present invention is manufactured by a coating step for coating Dy on the surface of the magnet of Fe—B-rare earth elements having a predetermined configuration and a diffusing step for diffusing Dy coated on the surface of the magnet into crystal grain boundary phases of the magnet with being heat treated at a predetermined temperature. In this case, the coating step comprises a first step for heating a process chamber used for carrying out the coating step and generating metallic vapor atmosphere within the process chamber by vaporizing vaporizable metallic material previously arranged within the process chamber, and a second step for introducing into the process chamber the magnet held at a temperature lower than that within the process chamber and then selectively depositing the vaporizable metallic material on a surface of the magnet by an effect of temperature difference between the temperature within the process chamber and that of the magnet by the magnet reaches a predetermined temperature. | 06-24-2010 |
Hiroshi Nagata, Ome-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100134924 | STORAGE DEVICE - According to one embodiment, a storage device includes at least one storage disk fixed to a hub mounted on a motor by a disk fixing mechanism, and a head configured to read and write information from and to the storage disk. The disk fixing mechanism includes a clamp ring, including a mounting hole on an inner peripheral side thereof through which the clamp ring is attached to the hub by a screw and a pressing portion for pressing the disk and a balance adjustment recess on an outer peripheral side thereof, and a balance wire attached to the balance adjustment recess. A first portion from the inner peripheral side to the pressing portion of the clamp ring and a second portion with the balance adjustment recess are formed of different materials. | 06-03-2010 |
Hiroshi Nagata, Kawasaki JP
| Patent application number | Description | Published |
|---|---|---|
| 20090141395 | MOUNTING METHOD FOR STORAGE MEDIUM - In one example embodiment, there is provided a storage-medium mounting method that includes detecting a rotation center axis of a rotor by rotating the rotor relative to a stator, the rotor being rotatably supported by the stator. The storage-medium mounting method includes mounting a storage medium on the rotor while aligning a center axis of the storage medium with the rotation center axis of the rotor. | 06-04-2009 |
| 20090296261 | DISK DRIVE AND MAGNETIC CIRCUIT FIXING METHOD FOR THE SAME - A disk-drive magnetic circuit fixing structure and fixing method for fixing a magnetic circuit to a base by means of a plurality of screws, wherein provisions are made to substantially prevent a microscopic sliding movement involving impulsive vibration from occurring at a fastening portion between the magnetic circuit and the base. More specifically, in a disk drive including a disk enclosure having a base and a cover, a magnetic head contained within the disk enclosure, and a driving coil motor for driving the magnetic head by working in combination with an actuator on which the magnetic head is mounted and a magnetic circuit disposed in the vicinity of the actuator, the magnetic circuit is fixed to the base with a single or a plurality of screws by applying in advance a lubricant forming a lubricating layer on a face where each screw contacts the magnetic circuit or the base. | 12-03-2009 |
Hiroshi Nagata, Nishinomiya-City JP
| Patent application number | Description | Published |
|---|---|---|
| 20090201106 | HARMONIC SUPPRESSION RESONATOR, HARMONIC PROPAGATION BLOCKING FILTER, AND RADAR APPARATUS - A harmonic suppression resonator comprises a plurality of waveguide resonators that resonate in TE mode, in which harmonic suppression resonator, adjoining resonators are coupled via a plurality of coupling windows. Four coupling windows | 08-13-2009 |
Hiroshi Nagata, Isehara JP
| Patent application number | Description | Published |
|---|---|---|
| 20110261255 | VIDEO DISPLAY CONTROL DEVICE, VIDEO DISPLAY DEVICE, AND RECORDING MEDIUM HAVING VIDEO DISPLAY PROGRAM RECORDED THEREON - A video display device includes: a valid area judging unit; a scene change detector; a video conversion processor; and a video display unit. The valid area judging unit recognizes an input video signal and judges an aspect ratio of a valid area of the input video signal. The scene change detector detects a moment when a series of highly related videos in terms of time are switched. The video conversion processor converts the input video signal based on the aspect ratio of the valid area judged by the valid area judging unit relative to the input video signal and scene change information detected by the scene change detector, and outputs the converted video signal to the video display unit. The video display unit conducts a control for displaying an output video signal outputted from the video conversion processor on a display area. | 10-27-2011 |