Patents by Inventor Katsumi Hirabayashi
Katsumi Hirabayashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240170335Abstract: To divide a ?-type gallium oxide substrate having a (001) plane as a main surface satisfactorily. A method of diving a gallium oxide substrate includes: a step of forming a plurality of dividing grooves along the extending direction of the (100) plane of a ?-type gallium oxide substrate having the (001) plane as the main surface; a step of processing the ?-type gallium oxide substrate into strips by cutting the substrate in a direction perpendicular to the extending direction of the dividing grooves; and a step of cleaving the strip-shaped ?-type gallium oxide substrates 10 along the dividing grooves for singulation. Since the plurality of dividing grooves are thus formed along the cleavage planes, the substrate can be divided satisfactorily without causing flaky peeling on the cleavage surfaces by cleaving the substrate along the dividing grooves.Type: ApplicationFiled: February 24, 2022Publication date: May 23, 2024Inventors: Minoru FUJITA, Jun ARIMA, Katsumi KAWASAKI, Jun HIRABAYASHI
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Patent number: 11946155Abstract: A crucible for growing a single-crystal in which a raw material melt for growing the single-crystal is solidified while being accommodated includes a side wall part configured to surround the raw material melt and a bottom part configured to support the raw material melt while being continuous with the side wall part, in which the side wall part has circumferential length redundancy inside the side wall part in a cross-sectional view. The side wall part has a portion where the circumference length is redundant inside any portion in the cross-sectional view, and when the crucible for growing a single-crystal is cooled in a cooling process after the single-crystal growth, the portion where the circumference length is redundant inside in the cross-sectional view is expanded to an outside of the crucible for growing a single-crystal.Type: GrantFiled: December 3, 2019Date of Patent: April 2, 2024Assignee: TDK CORPORATIONInventors: Katsumi Kawasaki, Jun Hirabayashi, Minoru Fujita, Daisuke Inokuchi, Jun Arima, Makio Kondo
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Publication number: 20240072179Abstract: To prevent dielectric breakdown of a Schottky barrier diode using gallium oxide. A Schottky barrier diode has a drift layer provided on a semiconductor substrate, an anode electrode, and a cathode electrode. A width W1 of an outer peripheral trench formed in the drift layer is larger than a width W2 of a center trench. An outer peripheral wall S1 of the outer peripheral trench is curved so as to approach vertical toward the outside, while an inner peripheral wall S2 thereof is closer to vertical than the outer peripheral wall S1. This relaxes an electric field which occurs at the outer peripheral bottom portion of the outer peripheral trench upon application of a backward voltage.Type: ApplicationFiled: January 28, 2022Publication date: February 29, 2024Inventors: Jun ARIMA, Minoru FUJITA, Katsumi KAWASAKI, Jun HIRABAYASHI
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Publication number: 20180050433Abstract: A machine tool of the present embodiment includes: a column that is disposed in a vertically standing manner and has a predetermined linear expansion coefficient; a spindle head that is supported by the column and supports a horizontal spindle for attaching a tool thereto; and a reference bar that is disposed separately from the column and has a linear expansion coefficient that is different from the linear expansion coefficient of the column wherein the column has a column-side measurement target zone, the reference bar has a reference bar-side measurement target zone, and a measurement means measures a distance between the column-side measurement target zone and the reference bar-side measurement target zone.Type: ApplicationFiled: March 9, 2016Publication date: February 22, 2018Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: KATSUMI HIRABAYASHI, ATSUSHI TADA
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Publication number: 20120093601Abstract: The present invention relates to a machine tool in which a column including a main spindle with a working tool mounted thereon is movable in a direction along an edge part of a machine platen, wherein a protective fence is provided on the edge part of the machine platen.Type: ApplicationFiled: April 7, 2010Publication date: April 19, 2012Inventor: Katsumi Hirabayashi
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Patent number: 7769130Abstract: An X-ray imaging apparatus is disposed with an imaging table that includes an imaging surface with which a breast of an examinee in an upright posture is brought into contact and handles that are disposed higher than the imaging surface during craniocaudal imaging. Grip portions of the handles slant so as to gradually become closer to a chest wall contacting portion as the grip portions approach the imaging surface. Thus, when an examinee is made to grasp the handles, the posture of the examinee can be made more natural.Type: GrantFiled: September 24, 2008Date of Patent: August 3, 2010Assignee: FUJIFILM CorporationInventors: Hajime Nakata, Katsumi Hirabayashi
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Publication number: 20090086928Abstract: An X-ray imaging apparatus is disposed with an imaging table that includes an imaging surface with which a breast of an examinee in an upright posture is brought into contact and handles that are disposed higher than the imaging surface during craniocaudal imaging. Grip portions of the handles slant so as to gradually become closer to a chest wall contacting portion as the grip portions approach the imaging surface. Thus, when an examinee is made to grasp the handles, the posture of the examinee can be made more natural.Type: ApplicationFiled: September 24, 2008Publication date: April 2, 2009Applicant: FUJIFILM CorporationInventors: Hajime NAKATA, Katsumi Hirabayashi
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Patent number: 6943841Abstract: A digital still camera is provided with a freely rotatably dial. The camera has a liquid crystal display screen provided on its back and the screen displays film borders. A thumbnail image corresponding to main image data that has been recorded on a memory card is displayed in a thumbnail image border within the film borders. By rotating the dial, the film borders are moved so that a desired thumbnail image becomes enclosed by a designating frame. When the thumbnail image is enclosed by the designating frame, the main image is displayed an area. When a blank area is enclosed by the designating frame, the main image data can be recorded on the memory card. Operability is facilitated because recording, playback and designation of a frame to be played back can all be performed in accordance with rotation of the dial.Type: GrantFiled: November 21, 2001Date of Patent: September 13, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Izumi Miyake, Kenji Kojima, Katsumi Hirabayashi
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Patent number: 6929458Abstract: An internal gear oil pump rotor assembly which enables the construction of an oil pump that is compact and has high performance. In the oil pump rotor assembly having an inner rotor and an outer rotor, the number of teeth “Zi” of the inner rotor with trochoid tooth profiles is set to be equal to or fewer than “6”, and a ratio Si/So is set so as to satisfy the following inequalities: 0.8?Si/So?1.3, where Si is a cross-sectional area of one external tooth which is formed outside a root circle that is formed along the bottoms of the external teeth of the inner rotor, and So is a cross-sectional area of one internal tooth which is formed inside a root circle that is formed along the bottoms of the internal teeth of the outer rotor.Type: GrantFiled: July 7, 2003Date of Patent: August 16, 2005Assignee: Mitsubishi Materials CorporationInventors: Katsumi Hirabayashi, Ichiro Kimura, Hirotaka Kurita, Katsuaki Hosono, Takashi Kobayashi
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Patent number: 6905317Abstract: An oil pump apparatus includes a body, a first rotor and a second rotor disposed in the body so as to be able to rotate and a regulator valve mechanism for regulating the pressure of oil discharged to portions of an engine, wherein the regulator valve mechanism is disposed in the inside of the body and the engine and includes a regulator valve member which moves in the direction being in parallel with a rotation as of the first and second rotors in response to the discharged oil pressure.Type: GrantFiled: December 2, 2002Date of Patent: June 14, 2005Assignee: Aisin Seiki Kabushiki KaishaInventors: Katsumi Hirabayashi, Ichiro Kimura, Hirotaka Kurita
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Patent number: 6821064Abstract: An apparatus for compensating position error of a spindle head, comprises: Y-axis control parts 32a, 32b for controlling first and second servomotors 24a, 24b on the basis of a spindle head moving command fed from a numerical control unit 30; a correction data storage part 36 for storing correction data determining the relationship of a feed distance of a ram 18 to a compensation value for correcting the vertical deviation of the ram 18 in the feed distance of the ram 18; and a correction means 44 for being introduced a ram feed instruction, which is fed from the numerical control unit, and for reading out compensation value corresponding to the feed distance of the ram from the correction data storage unit 36, to correct the spindlehead feed instruction by adding or subtracting the compensation value to or from the spindlehead feed instruction.Type: GrantFiled: September 26, 2002Date of Patent: November 23, 2004Assignee: Toshiba Kikai Kabushiki KaishaInventor: Katsumi Hirabayashi
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Publication number: 20040105765Abstract: An oil pump apparatus includes a body, a first rotor and a second rotor disposed in the body so as to be able to rotate and a regulator valve mechanism for regulating the pressure of oil discharged to portions of an engine, wherein the regulator valve mechanism is disposed in the inside of the body and the engine and includes a regulator valve member which moves in the direction being in parallel with a rotation as of the first and second rotors in response to the discharged oil pressure.Type: ApplicationFiled: December 2, 2002Publication date: June 3, 2004Inventors: Katsumi Hirabayashi, Ichiro Kimura, Hirotaka Kurita
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Publication number: 20040067150Abstract: An internal gear oil pump rotor assembly which enables the construction of an oil pump that is compact and has high performance. In the oil pump rotor assembly having an inner rotor and an outer rotor, the number of teeth “Zi” of the inner rotor with trochoid tooth profiles is set to be equal to or fewer than “6”, and a ratio Si/So is set so as to satisfy the following inequalities: 0.8≦Si/So≦1.3, where Si is a cross-sectional area of one external tooth which is formed outside a root circle that is formed along the bottoms of the external teeth of the inner rotor, and So is a cross-sectional area of one internal tooth which is formed inside a root circle that is formed along the bottoms of the internal teeth of the outer rotor.Type: ApplicationFiled: July 7, 2003Publication date: April 8, 2004Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Katsumi Hirabayashi, Ichiro Kimura, Hirotaka Kurita, Katsuaki Hosono, Takashi Kobayashi
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Publication number: 20030063957Abstract: An apparatus for compensating position error of a spindle head, comprises: Y-axis control parts 32a, 32b for controlling first and second servomotors 24a, 24b on the basis of a spindle head moving command fed from a numerical control unit 30; a correction data storage part 36 for storing correction data determining the relationship of a feed distance of a ram 18 to a compensation value for correcting the vertical deviation of the ram 18 in the feed distance of the ram 18; and a correction means 44 for being introduced a ram feed instruction, which is fed from the numerical control unit, and for reading out compensation value corresponding to the feed distance of the ram from the correction data storage unit 36, to correct the spindlehead feed instruction by adding or subtracting the compensation value to or from the spindlehead feed instruction.Type: ApplicationFiled: September 26, 2002Publication date: April 3, 2003Inventor: Katsumi Hirabayashi
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Patent number: 6471611Abstract: In an auto-tensioner, a damping device is used to control a fluid communication between a first fluid chamber and a second chamber for adjusting an engagement of an idler pulley with a belt-shaped power transmission member in such a manner that when a tension thereof is decreased, a quick propulsive movement of the idler pulley to the belt-shaped power transmission member is allowed by the first urging member, while when the tension is increased, the idler pulley is retracted gradually from the belt-shaped power transmission member by a registration of the belt-shaped power transmission member.Type: GrantFiled: September 13, 1999Date of Patent: October 29, 2002Assignee: Aisin Seiki Kabushiki KaishaInventors: Koji Hotta, Hirohito Terashima, Katsumi Hirabayashi
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Publication number: 20020064387Abstract: A digital still camera is provided with a freely rotatably dial. The camera has a liquid crystal display screen provided on its back and the screen displays film borders. A thumbnail image corresponding to main image data that has been recorded on a memory card is displayed in a thumbnail image border within the film borders. By rotating the dial, the film borders are moved so that a desired thumbnail image becomes enclosed by a designating frame. When the thumbnail image is enclosed by the designating frame, the main image is displayed an area. When a blank area is enclosed by the designating frame, the main image data can be recorded on the memory card. Operability is facilitated because recording, playback and designation of a frame to be played back can all be performed in accordance with rotation of the dial.Type: ApplicationFiled: November 21, 2001Publication date: May 30, 2002Inventors: Izumi Miyake, Kenji Kojima, Katsumi Hirabayashi
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Patent number: D548838Type: GrantFiled: May 10, 2006Date of Patent: August 14, 2007Assignee: Fujifilm CorporationInventors: Katsumi Hirabayashi, Shozo Kondo
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Patent number: D597210Type: GrantFiled: May 19, 2008Date of Patent: July 28, 2009Assignee: Fujifilm CorporationInventor: Katsumi Hirabayashi
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Patent number: D625011Type: GrantFiled: June 19, 2009Date of Patent: October 5, 2010Assignee: Fujifilm CorporationInventor: Katsumi Hirabayashi
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Patent number: D638124Type: GrantFiled: May 10, 2010Date of Patent: May 17, 2011Assignee: Fujifilm CorporationInventors: Katsumi Hirabayashi, Hajime Nakata