Patents by Inventor Takehiko Kato
Takehiko Kato 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: 20240111241Abstract: Provided is a cleaning member, comprising an elastic member that includes polyurethane, wherein: when tan ? of a test piece sampled from the elastic member is measured in the temperature range of ?20° C. to +60° C., the peak temperature of a peak indicating the maximum value of tan ? is at 15.0° C. or below; the maximum value of tan ? is 0.20 to 0.55; tan ? at a temperature of 55° C. is 0.13 or larger; and where the detected quantity of all ions obtained when the test piece is heated at a rate of temperature increase of 10° C./second to 1000° C. using a direct-sampling mass spectrometer is M1 and the integrated intensity of a peak in a derived ion thermogram that corresponds to a range of m/z values originating in multifunctional isocyanate with at least three isocyanate groups is M2, M2/M1 is at least 0.001.Type: ApplicationFiled: November 27, 2023Publication date: April 4, 2024Inventors: MASANORI YOKOYAMA, KENYA TERADA, TAKEHIKO AOYAMA, SHOTA SEGAWA, HISAO KATO, MITSUHIRO KUNIEDA, ARIHIRO YAMAMOTO
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Publication number: 20240071678Abstract: A transformer device according to the disclosure includes a transformer and a cooling device that cools the transformer. The transformer includes a primary coil, a secondary coil, and a first core and a second core, into which the primary and secondary coils are respectively inserted. The first and second cores are disposed to face each other. The first core includes a first core part and a second core part, each of the first and second core parts formed by dividing the first core in a predetermined division plane. The first and second core parts of the first core are disposed to face each other through a gap, and in which the first core and the cooling device are disposed to face each other.Type: ApplicationFiled: December 24, 2021Publication date: February 29, 2024Inventors: Akira KATO, Takehiko YAMAKAWA
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Patent number: 11804863Abstract: A transmission/reception circuit includes a low-noise amplifier, switches, a band-pass filter, a power amplifier, and a low-pass filter. The low-noise amplifier is connected, at its output terminal, to a terminal. The switch is connected to the input terminal. The band-pass filter is connected to the switch and to an antenna through a terminal. The power amplifier is connected to a terminal. The switch is connected to the output terminal and to the band-pass filter. The low-pass filter is connected to a terminal, and removes a frequency band higher than the frequency band of a signal that is to be transmitted. The switch is connected to the output terminal and to the low-pass filter. The switch is connected to a terminal and to the low-pass filter.Type: GrantFiled: April 28, 2022Date of Patent: October 31, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Takehiko Kato
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Publication number: 20230318576Abstract: A switching circuit includes a first antenna terminal and a second antenna terminal, a first input-output terminal and a second input-output terminal, a plurality of switches and a ground switch. When an electrical connection destination of the first input-output terminal is switched to the first antenna terminal, a first path switch included in the plurality of switches and provided along a first path connecting the first input-output terminal and the first antenna terminal to each other, and a second path switch and the ground switch provided along a second path connecting the second input-output terminal and the ground to each other, the second path switch included in the plurality of switches, are in conducting states, and a third path switch included in the plurality of switches and provided along a third path connecting the first path and the second path to each other is in a non-conducting state.Type: ApplicationFiled: March 30, 2023Publication date: October 5, 2023Inventors: Risa TAKEDA, Takehiko KATO
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Patent number: 11725574Abstract: An operation mechanism of a turbocharger includes: a driving member undergoes a reciprocating movement; a link plate rotationally coupled to the driving member through a first hinge-portion, wherein a first rotation-center of the first hinge-portion is moves linearly along a virtual line in a reciprocating manner in response to the reciprocating movement; and an operation lever. The operation lever includes: a first end operates a flow regulator of the turbocharger, wherein a swing center of the operation lever is located at the first end; and a second end rotationally coupled to the link plate through a second hinge-portion including a second rotation-center, wherein the second end is swings relative to the swing center when the first rotation-center moves linearly along the virtual line, and wherein a distance from the swing center to the second rotation-center is shorter than a distance from the swing center to the virtual line.Type: GrantFiled: April 5, 2022Date of Patent: August 15, 2023Inventors: Kuniaki Iizuka, Asako Yasui, Hayata Sakaida, Toshihiro Sugitani, Yuichiro Akiyama, Takehiko Kato
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Patent number: 11519290Abstract: A variable flow rate valve mechanism includes a valve, a lock member, a valve attachment member and a spring washer. The valve includes a valve body and a valve shaft. The lock member is fixed to the valve shaft. The valve attachment member is attached to the valve shaft. The spring washer is disposed adjacent the valve attachment member. The spring washer is formed into an annular shape around an axis of the spring washer. The spring washer includes a support portion, a deformable portion and a protrusion portion. The support portion includes a seat surface and an open surface. The deformable portion is connected to the support portion and extends in an inclined manner. The deformable portion includes a contact surface and an opposite surface. The protrusion portion protrudes from at least one of the open surface of the support portion and the opposite surface of the deformable portion.Type: GrantFiled: October 8, 2020Date of Patent: December 6, 2022Inventors: Takehiko Kato, Jinhee Byon
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Publication number: 20220364573Abstract: A semi-floating bearing (bearing) including: a main body, which has an annular shape, extends in a direction intersecting with a vertical direction, and has a shaft inserted through the main body; a radial bearing surface formed on an inner peripheral surface of the main body; and a plurality of oil supply grooves, which extend in an axial direction of the main body, are formed in the radial bearing surface at positions excluding a lowermost portion of the radial bearing surface in the vertical direction at intervals in a circumferential direction, and are arranged so as to be line-symmetric with each other with respect to a vertical axis in a cross section orthogonal to the axial direction of the radial bearing surface such that the interval between the oil supply grooves in the circumferential direction is the largest on a vertically lower side.Type: ApplicationFiled: July 26, 2022Publication date: November 17, 2022Applicant: IHI CorporationInventors: Kuniaki IIZUKA, Ryohei KITAMURA, Hayata SAKAIDA, Kazuaki IWATA, Takehiko KATO
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Publication number: 20220352909Abstract: A transmission/reception circuit includes a low-noise amplifier, switches, a band-pass filter, a power amplifier, and a low-pass filter. The low-noise amplifier is connected, at its output terminal, to a terminal. The switch is connected to the input terminal. The band-pass filter is connected to the switch and to an antenna through a terminal. The power amplifier is connected to a terminal. The switch is connected to the output terminal and to the band-pass filter. The low-pass filter is connected to a terminal, and removes a frequency band higher than the frequency band of a signal that is to be transmitted. The switch is connected to the output terminal and to the low-pass filter. The switch is connected to a terminal and to the low-pass filter.Type: ApplicationFiled: April 28, 2022Publication date: November 3, 2022Inventor: Takehiko KATO
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Publication number: 20220228525Abstract: An operation mechanism of a turbocharger includes: a driving member undergoes a reciprocating movement; a link plate rotationally coupled to the driving member through a first hinge-portion, wherein a first rotation-center of the first hinge-portion is moves linearly along a virtual line in a reciprocating manner in response to the reciprocating movement; and an operation lever. The operation lever includes: a first end operates a flow regulator of the turbocharger, wherein a swing center of the operation lever is located at the first end; and a second end rotationally coupled to the link plate through a second hinge-portion including a second rotation-center, wherein the second end is swings relative to the swing center when the first rotation-center moves linearly along the virtual line, and wherein a distance from the swing center to the second rotation-center is shorter than a distance from the swing center to the virtual line.Type: ApplicationFiled: April 5, 2022Publication date: July 21, 2022Inventors: Kuniaki IIZUKA, Asako YASUI, Hayata SAKAIDA, Toshihiro SUGITANI, Yuichiro AKIYAMA, Takehiko KATO
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Patent number: 11293450Abstract: A centrifugal compressor includes an impeller which includes a front surface, a back surface, and a side surface; a first wall portion which includes a first wall surface facing the front surface and forming a flow passage; a second wall portion which includes a second wall surface facing the back surface and the first wall surface; and a protruding wall portion which is provided at an outside in a radial direction in relation to the side surface of the impeller. The protruding wall portion includes a third wall surface extending from the second wall surface in the axial direction and facing the side surface of the impeller. The third wall surface further extends toward the first wall surface in the axial direction from a connection portion between the front surface and the side surface. The third wall surface and the side surface form a second gap therebetween.Type: GrantFiled: November 19, 2020Date of Patent: April 5, 2022Inventors: Jinhee Byon, Takehiko Kato
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Publication number: 20210071678Abstract: A centrifugal compressor includes an impeller which includes a front surface, a back surface, and a side surface; a first wall portion which includes a first wall surface facing the front surface and forming a flow passage; a second wall portion which includes a second wall surface facing the back surface and the first wall surface; and a protruding wall portion which is provided at an outside in a radial direction in relation to the side surface of the impeller. The protruding wall portion includes a third wall surface extending from the second wall surface in the axial direction and facing the side surface of the impeller. The third wall surface further extends toward the first wall surface in the axial direction from a connection portion between the front surface and the side surface. The third wall surface and the side surface form a second gap therebetween.Type: ApplicationFiled: November 19, 2020Publication date: March 11, 2021Inventors: Jinhee BYON, Takehiko KATO
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Publication number: 20210033001Abstract: A variable flow rate valve mechanism includes a valve, a lock member, a valve attachment member and a spring washer. The valve includes a valve body and a valve shaft. The lock member is fixed to the valve shaft. The valve attachment member is attached to the valve shaft. The spring washer is disposed adjacent the valve attachment member. The spring washer is formed into an annular shape around an axis of the spring washer. The spring washer includes a support portion, a deformable portion and a protrusion portion. The support portion includes a seat surface and an open surface. The deformable portion is connected to the support portion and extends in an inclined manner. The deformable portion includes a contact surface and an opposite surface. The protrusion portion protrudes from at least one of the open surface of the support portion and the opposite surface of the deformable portion.Type: ApplicationFiled: October 8, 2020Publication date: February 4, 2021Inventors: Takehiko KATO, Jinhee BYON
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Patent number: 9803635Abstract: A valve seat member, which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against an inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.Type: GrantFiled: December 21, 2016Date of Patent: October 31, 2017Assignee: DENSO CORPORATIONInventors: Takehiko Kato, Shinichiro Koshimoto, Osamu Hishinuma, Yutaka Miyamoto
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Patent number: 9771928Abstract: A valve seat member which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.Type: GrantFiled: May 22, 2014Date of Patent: September 26, 2017Assignee: DENSO CORPORATIONInventors: Takehiko Kato, Shinichiro Koshimoto, Osamu Hishinuma, Yutaka Miyamoto
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Publication number: 20170101987Abstract: A valve seat member, which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against an inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.Type: ApplicationFiled: December 21, 2016Publication date: April 13, 2017Inventors: Takehiko KATO, Shinichiro KOSHIMOTO, Osamu HISHINUMA, Yutaka MIYAMOTO
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Patent number: 9534589Abstract: Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.Type: GrantFiled: July 2, 2013Date of Patent: January 3, 2017Assignees: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Shinobu Oikawa, Hirokuni Tomita, Takehiko Kato
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Patent number: 9404481Abstract: Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.Type: GrantFiled: November 17, 2015Date of Patent: August 2, 2016Assignees: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Shinobu Oikawa, Hirokuni Tomita, Takehiko Kato
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Publication number: 20160069333Abstract: Between a movable core chamber and a fuel supply passage, a needle guide slidably supports a needle fixed to a movable core. The needle guide has a communication hole which fluidly connects the movable core chamber and the fuel supply passage. An opening sectional area of the communication hole is defined in such a manner that a fuel discharged amount decreases as an energization start time of a coil is delayed. In a suction stroke, it is restricted that the movable core and the needle bounce toward the fixed core after the needle biases a suction valve toward a stopper by means of a biasing force of a second spring. A relationship between the energization start time of the coil and the fuel discharged amount is properly maintained, so that the fuel discharged amount of the high-pressure pump can be controlled correctly.Type: ApplicationFiled: November 17, 2015Publication date: March 10, 2016Inventors: Shinobu OIKAWA, Hirokuni TOMITA, Takehiko KATO
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Publication number: 20140348676Abstract: A valve seat member which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.Type: ApplicationFiled: May 22, 2014Publication date: November 27, 2014Applicant: Denso CorporationInventors: Takehiko KATO, Shinichiro Koshimoto, Osamu Hishinuma, Yutaka Miyamoto
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Publication number: 20140314605Abstract: A common seat portion includes discharge passages that communicate between a first valve chamber and a second valve chamber when a discharge valve member is lifted away from the common seat portion. The common seat portion also includes a relief passage that extends substantially parallel to the discharge passages and communicates between the first valve chamber and the second valve chamber when a relief valve member is lifted away from the common seat portion.Type: ApplicationFiled: April 16, 2014Publication date: October 23, 2014Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Tatsuro KOGA, Ichiki TERASHIMA, Toshihide ONO, Seiji TANIZAWA, Takehiko KATO, Masatoshi KUROYANAGI, Shinobu OIKAWA, Noriya MATSUMOTO