Patents by Inventor Makoto Tsuzuki
Makoto Tsuzuki 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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Patent number: 10325902Abstract: A semiconductor device includes a first bidirectional diode of a ring shape surrounding a central region and including a first connection section and a second connection section which is provided to the inner side of the ring shape from the first connection section, a semiconductor element in the central region including a first semiconductor element electrode, a second semiconductor element electrode, and a control electrode, the first semiconductor element electrode electrically connected to the first connection section and the second semiconductor element electrode electrically connected to the control electrode, a first resistor including a first resistor electrode and a second resistor electrode, the first resistor electrode electrically connected to the second connection section and the control electrode, a second bidirectional diode electrically connected to the second resistor electrode and to the second semiconductor element electrode, and a second resistor element electrically connected to the seconType: GrantFiled: August 25, 2016Date of Patent: June 18, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Ryuta Arai, Hidetoshi Asahara, Makoto Tsuzuki
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Publication number: 20170263598Abstract: A semiconductor device includes a first bidirectional diode of a ring shape surrounding a central region and including a first connection section and a second connection section which is provided to the inner side of the ring shape from the first connection section, a semiconductor element in the central region including a first semiconductor element electrode, a second semiconductor element electrode, and a control electrode, the first semiconductor element electrode electrically connected to the first connection section and the second semiconductor element electrode electrically connected to the control electrode, a first resistor including a first resistor electrode and a second resistor electrode, the first resistor electrode electrically connected to the second connection section and the control electrode, a second bidirectional diode electrically connected to the second resistor electrode and to the second semiconductor element electrode, and a second resistor element electrically connected to the seconType: ApplicationFiled: August 25, 2016Publication date: September 14, 2017Inventors: Ryuta ARAI, Hidetoshi ASAHARA, Makoto TSUZUKI
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Patent number: 9539789Abstract: A three-dimensional fiber-reinforced composite includes a laminate having a plurality of fiber bundle layers that are layered in a lamination direction and include first and second outermost layers, a matrix resin; and a binding yarn. The binding yarn has first and second traverse yarn sections, and a surface-layer yarn section. The surface layer yarn section has bifurcated sections extending in opposite directions from the first and second traverse yarn sections on the surface of the second outermost layer. An additive and the matrix resin are arranged in a space enclosed by the bifurcated sections and the fiber bundles of the second outermost layer adjacent to the bifurcated sections, and also in a space between each of the first and second traverse yarn sections and fiber bundles adjacent thereto, and in a space between the first and second traverse yarn sections.Type: GrantFiled: August 8, 2013Date of Patent: January 10, 2017Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiko Yasue, Ryohei Tsuji, Ryuta Kamiya, Makoto Tsuzuki
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Publication number: 20160268249Abstract: A semiconductor device includes a transistor that is connected to a load. A first diode is provided on a single crystal semiconductor layer, and is connected between a drain of the transistor and a gate of the transistor so that a current direction from the gate to the drain is a forward direction. A second diode is provided on the single crystal semiconductor layer, and is connected between the first diode and the gate of the transistor or between the first diode and the drain of the transistor so that a forward direction is opposite to the forward direction of the first diode.Type: ApplicationFiled: August 28, 2015Publication date: September 15, 2016Inventor: Makoto TSUZUKI
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Patent number: 9162397Abstract: A first process in which a fiber reinforced base is placed in a cavity of a molding die and then resin is injected into the cavity of the molding die in a state where the molding die is opened by a sum of a distance X1 and a distance at the time of completion of molding; a second process in which the molding die is closed to a state where the molding die is opened by a sum of a distance X2 and the distance at the time of completion of molding while resin in the cavity is being drained; and a third process in which the drain of the resin from the cavity is stopped and then the molding die is closed to the distance at the time of completion of molding while a die clamping pressure is maintained at a predetermined value to cure the resin, are carried out sequentially.Type: GrantFiled: May 25, 2010Date of Patent: October 20, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Natsuhiko Katahira, Joji Yoshimura, Makoto Tsuzuki, Masahiko Yasue
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Publication number: 20150246505Abstract: A three-dimensional fiber-reinforced composite includes a laminate having a plurality of fiber bundle layers that are layered in a lamination direction and include first and second outermost layers, a matrix resin; and a binding yarn. The binding yarn has first and second traverse yarn sections, and a surface-layer yarn section. The surface layer yarn section has bifurcated sections extending in opposite directions from the first and second traverse yarn sections on the surface of the second outermost layer. An additive and the matrix resin are arranged in a space enclosed by the bifurcated sections and the fiber bundles of the second outermost layer adjacent to the bifurcated sections, and also in a space between each of the first and second traverse yarn sections and fiber bundles adjacent thereto, and in a space between the first and second traverse yarn sections.Type: ApplicationFiled: August 20, 2013Publication date: September 3, 2015Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiko Yasue, Ryohei Tsuji, Ryuta Kamiya, Makoto Tsuzuki
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Publication number: 20120141765Abstract: A first process in which a fiber reinforced base is placed in a cavity of a molding die and then resin is injected into the cavity of the molding die in a state where the molding die is opened by a sum of a distance X1 and a distance at the time of completion of molding; a second process in which the molding die is closed to a state where the molding die is opened by a sum of a distance X2 and the distance at the time of completion of molding while resin in the cavity is being drained; and a third process in which the drain of the resin from the cavity is stopped and then the molding die is closed to the distance at the time of completion of molding while a die clamping pressure is maintained at a predetermined value to cure the resin, are carried out sequentially.Type: ApplicationFiled: May 25, 2010Publication date: June 7, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Natsuhiko Katahira, Joji Yoshimura, Makoto Tsuzuki, Masahiko Yasue
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Patent number: 7946446Abstract: A gas storage tank for storing a gas, the tank has an opening formed on at least one of two ends; a filling unit that is housed in the tank; and a support member that is arranged between the tank and the filling unit and holds the filling unit in the tank to connect a whole gap formed between the tank and the filling unit with the opening.Type: GrantFiled: April 30, 2008Date of Patent: May 24, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota JidoshokkiInventors: Masahiko Kimbara, Daigoro Mori, Takehiro Nito, Hidehito Kubo, Akiko Kumano, Makoto Tsuzuki, Yoshihiro Isogai
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Patent number: 7842378Abstract: An energy absorber is crushed upon receiving compressive load, thereby absorbing energy. The energy absorber has a first end and a second end with respect to a direction of the compressive load. The energy absorber is formed of fiber-reinforced resin. The fiber-reinforced resin includes a stack of fiber layers having a compression direction fiber layer. The compression direction fiber layer includes fiber bundles of filament fibers. The fiber bundles are arranged such that the extending direction of the fiber bundles has a component of the direction of the compressive load. The density of the fiber bundles is gradually increased from the first end to the second end. Therefore, compressive load required for crushing is prevented from increasing at an early stage of crushing.Type: GrantFiled: December 30, 2004Date of Patent: November 30, 2010Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Ryo Harada, Makoto Tsuzuki, Ryuta Kamiya, Aya Nishimoto, Ryohei Tsuji
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Patent number: 7735536Abstract: A filament winding apparatus for rotating in a predetermined direction a core material that is supported by a supporting portion, and for winding around the core material, an elongated material which has flexibility and which is impregnated with an unhardened synthetic resin material, the filament winding apparatus includes a plurality of feeding portions for feeding a plurality of elongated materials, and a plurality of guiding mechanisms which are positioned around the core material so as to correspond to the plurality of elongated materials that are drawn from the plurality of feeding portions, through which the corresponding elongated materials are passed, wherein at least one of the supporting portion and the plurality of guiding mechanisms are movable in a rotation axial direction, from a winding operation range in which the elongated materials can be guided by the guiding mechanisms to winding positions at which the elongated materials are wound around the core material, to an attachable/detachable posType: GrantFiled: April 28, 2005Date of Patent: June 15, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota JidoshokkiInventors: Toru Mukai, Natsuhiko Katahira, Sakae Sugishima, Makoto Tsuzuki, Hidehito Kubo
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Patent number: 7418782Abstract: The technique of the invention manufactures a gas storage tank, which includes a gas absorbent/adsorbent and is capable of storing a high-pressure gas. The manufacturing process of a hydrogen storage tank first assembles a heat exchanger unit and packs the particles of hydrogen storage alloy into the heat exchanger unit. The manufacturing process then blocks hydrogen storage alloy filling holes used for packing the hydrogen storage alloy in the heat exchanger unit and attaches a detachable cover member to a hydrogen inlet. The manufacturing process subsequently locates the heat exchange unit filled with the hydrogen storage alloy in a cylindrical tank and narrows both ends of the tank to form joint openings. The manufacturing process then heat-treating the tank under water cooling and detaches the cover member. The manufacturing process attaches joint assemblies to the joint openings and forms a reinforcement layer around the outer circumference of the tank to complete the hydrogen storage tank.Type: GrantFiled: March 23, 2004Date of Patent: September 2, 2008Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota JidoshokkiInventors: Masahiko Kimbara, Daigoro Mori, Takehiro Nito, Hidehito Kubo, Akiko Kumano, Makoto Tsuzuki, Yoshihiro Isogai
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Publication number: 20080203101Abstract: The technique of the invention manufactures a gas storage tank, which includes a gas absorbent/adsorbent and is capable of storing a high-pressure gas. The manufacturing process of a hydrogen storage tank first assembles a heat exchanger unit and packs the particles of hydrogen storage alloy into the heat exchanger unit. The manufacturing process then blocks hydrogen storage alloy filling holes used for packing the hydrogen storage alloy in the heat exchanger unit and attaches a detachable cover member to a hydrogen inlet. The manufacturing process subsequently locates the heat exchange unit filled with the hydrogen storage alloy in a cylindrical tank and narrows both ends of the tank to form joint openings. The manufacturing process then heat-treating the tank under water cooling and detaches the cover member. The manufacturing process attaches joint assemblies to the joint openings and forms a reinforcement layer around the outer circumference of the tank to complete the hydrogen storage tank.Type: ApplicationFiled: April 30, 2008Publication date: August 28, 2008Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiko Kimbara, Daigoro Mori, Takehiro Nito, Hidehito Kubo, Akiko Kumano, Makoto Tsuzuki, Yoshihiro Isogai
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Publication number: 20070221316Abstract: A filament winding apparatus for rotating in a predetermined direction a core material that is supported by a supporting portion, and for winding around the core material, an elongated material which has flexibility and which is impregnated with an unhardened synthetic resin material, the filament winding apparatus includes a plurality of feeding portions for feeding a plurality of elongated materials, and a plurality of guiding mechanisms which are positioned around the core material so as to correspond to the plurality of elongated materials that are drawn from the plurality of feeding portions, through which the corresponding elongated materials are passed, wherein at least one of the supporting portion and the plurality of guiding mechanisms are movable in a rotation axial direction, from a winding operation range in which the elongated materials can be guided by the guiding mechanisms to winding positions at which the elongated materials are wound around the core material, to an attachable/detachable posType: ApplicationFiled: April 28, 2005Publication date: September 27, 2007Inventors: Toru Mukai, Natsuhiko Katahira, Sakae Sugishima, Makoto Tsuzuki, Hidehito Kubo
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Patent number: 7240549Abstract: A control unit 40 acquires acceleration ? sensed by an acceleration sensor 31, and if the control unit 40 determines that acceleration ? does not equal zero, the control unit 40 again acquires acceleration ?. In the event that the control unit 40 decides that acceleration ? equals zero, the control unit 40 acquires the weight M sensed by the weight sensor 30. The control unit 40 continues sampling of weight M until a predetermined sampling period has elapsed. Once the sampling period has elapsed, the control unit 40 calculates the average of weight M obtained through sampling, and uses the calculated average and a map to determine hydrogen amount.Type: GrantFiled: October 21, 2004Date of Patent: July 10, 2007Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Masahiko Kimbara, Daigoro Mori, Takehiro Nito, Hidehito Kubo, Makoto Tsuzuki
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Patent number: 7169214Abstract: A high pressure tank has a cylindrical liner and a fiber reinforced plastic layer which covers the outer surface of the liner. At least one end of the liner is separable. The liner includes a cylindrical liner body and a lid. An O-ring is located between the contact surfaces of the liner body and the lid in the circumferential direction. Each contact surface has a seal surface which contacts the O-ring. One of the liner body and the lid has a deformable portion which deforms toward the seal surfaces. The structure can securely seal the separated portions of the liner when the high pressure tank is in a high pressure state.Type: GrantFiled: January 21, 2004Date of Patent: January 30, 2007Assignees: Kabushiki Kaisha Toyota Jidoshokki, Toyota Jidosha Kabushiki KaishaInventors: Hidehito Kubo, Makoto Tsuzuki, Keiji Toh, Akiko Kumano, Daigoro Mori, Masahiko Kimbara
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Publication number: 20050166673Abstract: A control unit 40 acquires acceleration ? sensed by an acceleration sensor 31, and if the control unit 40 determines that acceleration ? does not equal zero, the control unit 40 again acquires acceleration ?. In the event that the control unit 40 decides that acceleration ? equals zero, the control unit 40 acquires the weight M sensed by the weight sensor 30. The control unit 40 continues sampling of weight M until a predetermined sampling period has elapsed. Once the sampling period has elapsed, the control unit 40 calculates the average of weight M obtained through sampling, and uses the calculated average and a map to determine hydrogen amount.Type: ApplicationFiled: October 21, 2004Publication date: August 4, 2005Applicants: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota JidoshokkiInventors: Masahiko Kimbara, Daigoro Mori, Takehiro Nito, Hidehito Kubo, Makoto Tsuzuki
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Publication number: 20050147804Abstract: An energy absorber is crushed upon receiving compressive load, thereby absorbing energy. The energy absorber has a first end and a second end with respect to a direction of the compressive load. The energy absorber is formed of fiber-reinforced resin. The fiber-reinforced resin includes a stack of fiber layers having a compression direction fiber layer. The compression direction fiber layer includes fiber bundles of filament fibers. The fiber bundles are arranged such that the extending direction of the fiber bundles has a component of the direction of the compressive load. The density of the fiber bundles is gradually increased from the first end to the second end. Therefore, compressive load required for crushing is prevented from increasing at an early stage of crushing.Type: ApplicationFiled: December 30, 2004Publication date: July 7, 2005Inventors: Ryo Harada, Makoto Tsuzuki, Ryuta Kamiya, Aya Nishimoto, Ryohei Tsuji
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Publication number: 20050087537Abstract: A high pressure tank 10 comprises a metal liner 20 having a desired tank shape; and a composite material shell 30 formed on the periphery of the metal liner 20. The metal liner 20 comprises a cylindrical barrel portion 21, a mouthpiece 22 located at each of two end portions, and a cap portion 23 connecting barrel portion 21 with mouthpiece 22. Extensible portions 211 of bellows configuration are formed along the entire length of the metal liner 20 in the axial (lengthwise) direction. The extensible portions 211 impart elastic action through opening and closing (deformation) of their basal portions 211b, thereby preventing slippage from occurring between the metal barrel portion 21 and the composite material shell 30 when the high pressure tank 10 expands and contracts.Type: ApplicationFiled: October 19, 2004Publication date: April 28, 2005Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masahiko Kimbara, Daigoro Mori, Makoto Tsuzuki, Akiko Kumano
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Publication number: 20050000970Abstract: The technique of the invention manufactures a gas storage tank, which includes a gas absorbent/adsorbent and is capable of storing a high-pressure gas. The manufacturing process of a hydrogen storage tank first assembles a heat exchanger unit and packs the particles of hydrogen storage alloy into the heat exchanger unit. The manufacturing process then blocks hydrogen storage alloy filling holes used for packing the hydrogen storage alloy in the heat exchanger unit and attaches a detachable cover member to a hydrogen inlet. The manufacturing process subsequently locates the heat exchange unit filled with the hydrogen storage alloy in a cylindrical tank and narrows both ends of the tank to form joint openings. The manufacturing process then heat-treating the tank under water cooling and detaches the cover member. The manufacturing process attaches joint assemblies to the joint openings and forms a reinforcement layer around the outer circumference of the tank to complete the hydrogen storage tank.Type: ApplicationFiled: March 23, 2004Publication date: January 6, 2005Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Masahiko Kimbara, Daigoro Mori, Takehiro Nito, Hidehito Kubo, Akiko Kumano, Makoto Tsuzuki, Yoshihiro Isogai
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Publication number: 20040182869Abstract: A high pressure tank has a cylindrical liner and a fiber reinforced plastic layer which covers the outer surface of the liner. At least one end of the liner is separable. The liner includes a cylindrical liner body and a lid. An O-ring is located between the contact surfaces of the liner body and the lid in the circumferential direction. Each contact surface has a seal surface which contacts the O-ring. One of the liner body and the lid has a deformable portion which deforms toward the seal surfaces. The structure can securely seal the separated portions of the liner when the high pressure tank is in a high pressure state.Type: ApplicationFiled: January 21, 2004Publication date: September 23, 2004Inventors: Hidehito Kubo, Makoto Tsuzuki, Keiji Toh, Akiko Kumano, Daigoro Mori, Masahiko Kimbara