Patents by Inventor Suguru Takayama
Suguru Takayama 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: 11128245Abstract: At least one of a plurality of generators is a first generator configured such that a relationship of a generator output voltage with respect to a generator active power output from the generator to a corresponding first AC wiring portion has a predetermined first drooping characteristic. The control device is configured to generate a drive signal for a power conversion device by deciding a target value of a first control element such that a relationship of an AC wiring portion voltage with respect to a power conversion device active power output from the power conversion device to a first AC wiring portion corresponding to a first generator has a predetermined second drooping characteristic and correcting the target value of the first control element according to a DC voltage at a DC wiring portion.Type: GrantFiled: October 16, 2018Date of Patent: September 21, 2021Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yusuke Umezu, Kazushige Sugimoto, Soichiro Bando, Naoki Yamaguchi, Kenichi Sakimoto, Kiyoshi Kimura, Suguru Takayama, Takato Uda
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Publication number: 20210203258Abstract: At least one of a plurality of generators is a first generator configured such that a relationship of a generator output voltage with respect to a generator active power output from the generator to a corresponding first AC wiring portion has a predetermined first drooping characteristic. The control device is configured to generate a drive signal for a power conversion device by deciding a target value of a first control element such that a relationship of an AC wiring portion voltage with respect to a power conversion device active power output from the power conversion device to a first AC wiring portion corresponding to a first generator has a predetermined second drooping characteristic and correcting the target value of the first control element according to a DC voltage at a DC wiring portion.Type: ApplicationFiled: October 16, 2018Publication date: July 1, 2021Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yusuke UMEZU, Kazushige SUGIMOTO, Soichiro BANDO, Naoki YAMAGUCHI, Kenichi SAKIMOTO, Kiyoshi KIMURA, Suguru TAKAYAMA, Takato UDA
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Patent number: 10985560Abstract: Each of the plurality of generators is configured so a relationship of frequency with respect to a generator active power output by each generator to the corresponding alternating-current wiring unit has a predetermined first drooping characteristic. The plurality of power conversion devices is configured to convert alternating-current power input through each alternating-current wiring unit into direct-current power, and to convert direct-current power input through the direct-current wiring unit into alternating-current power.Type: GrantFiled: December 26, 2017Date of Patent: April 20, 2021Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yusuke Umezu, Kazushige Sugimoto, Soichiro Bando, Naoki Yamaguchi, Kiyoshi Kimura, Suguru Takayama, Takato Uda
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Patent number: 10766630Abstract: A first DC power supply section of a DC stabilization power supply system includes at least a generator and a PWM converter. A second DC power supply section of the DC stabilization power supply system includes at least a battery and a boost converter. Each of these DC power supply sections performs a power supply stabilization operation for supplying DC power to an electric system and absorbing regenerative power generated from an actuator or the like. A PWM converter controls adjustment of the amount of the power supply stabilization operation to be performed by the DC power supply section and the amount of the power stabilization operation to be performed by the DC power supply section, by changing a target voltage value of a DC bus.Type: GrantFiled: June 15, 2016Date of Patent: September 8, 2020Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsushi Iwashima, Kazushige Sugimoto, Jun Yamaguchi, Suguru Takayama
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Publication number: 20200083709Abstract: Each of the plurality of generators is configured so a relationship of frequency with respect to a generator active power output by each generator to the corresponding alternating-current wiring unit has a predetermined first drooping characteristic. The plurality of power conversion devices is configured to convert alternating-current power input through each alternating-current wiring unit into direct-current power, and to convert direct-current power input through the direct-current wiring unit into alternating-current power.Type: ApplicationFiled: December 26, 2017Publication date: March 12, 2020Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yusuke UMEZU, Kazushige SUGIMOTO, Soichiro BANDO, Naoki YAMAGUCHI, Kiyoshi KIMURA, Suguru TAKAYAMA, Takato UDA
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Publication number: 20180362181Abstract: A first DC power supply section of a DC stabilization power supply system includes at least a generator and a PWM converter. A second DC power supply section of the DC stabilization power supply system includes at least a battery and a boost converter. Each of these DC power supply sections performs a power supply stabilization operation for supplying DC power to an electric system and absorbing regenerative power generated from an actuator or the like. A PWM converter controls adjustment of the amount of the power supply stabilization operation to be performed by the DC power supply section and the amount of the power stabilization operation to be performed by the DC power supply section, by changing a target voltage value of a DC bus.Type: ApplicationFiled: June 15, 2016Publication date: December 20, 2018Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsushi IWASHIMA, Kazushige SUGIMOTO, Jun YAMAGUCHI, Suguru TAKAYAMA
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Patent number: 6891329Abstract: The EL device of the present invention has a structure in which a first electrode, a first insulator layer, an electroluminescence-producing light emitting layer, a second insulator layer, and a second electrode layer are successively stacked on an electrical insulating substrate. At least one of the first insulator layer and the second insulator layer has as a main component barium titanate and in addition 0.1 to 3 mole % magnesium oxide, 0.05 to 1.0 mole % manganese oxide, no more than 1 mole % yttrium oxide, 2 to 12 mole % of barium oxide and calcium oxide, and 2-12 mole % silicon oxide.Type: GrantFiled: December 8, 2000Date of Patent: May 10, 2005Assignee: The Westaim CorporationInventors: Katsuto Nagano, Takeshi Nomura, Taku Takeishi, Suguru Takayama
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Patent number: 6800322Abstract: The invention aims to provide a method for preparing a composite substrate of substrate/electrode/dielectric layer structure having a thick-film dielectric layer with a smooth surface using a sol-gel solution of high concentration capable of forming a film to a substantial thickness without generating cracks, the composite substrate and an EL device using the same. The object is attained by a method for preparing a composite substrate including in order an electrically insulating substrate, an electrode and an insulator layer formed thereon by a thick film technique, wherein a thin-film insulator layer is formed on the insulator layer by applying to the insulator layer a sol-gel solution obtained by dissolving a metal compound in a diol represented by OH(CH2)nOH as a solvent, followed by drying and firing; the composite substrate and an EL device using the same.Type: GrantFiled: October 9, 2001Date of Patent: October 5, 2004Assignee: TDK CorporationInventors: Taku Takeishi, Katsuto Nagano, Jun Hagiwara, Suguru Takayama
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Patent number: 6797413Abstract: The invention aims to provide a composite substrate which suppresses reaction of a substrate with a dielectric layer that can otherwise cause degradation of the dielectric layer and which can be sintered at high temperature while minimizing the occurrence of cracks in the dielectric layer, and an EL device using the composite substrate. The object is attained by a composite substrate in which an electrode and a dielectric layer are successively formed on an electrically insulating substrate, the substrate having a coefficient of thermal expansion of 10-20 ppm/K, and an EL device using the composite substrate.Type: GrantFiled: October 9, 2001Date of Patent: September 28, 2004Assignee: TDK CorporationInventors: Taku Takeishi, Katsuto Nagano, Suguru Takayama, Yoshihiko Yano
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Patent number: 6723192Abstract: A composite substrate in which the surface of the insulating layer is not influenced by the electrode layer and which requires neither a grinding process nor a sol-gel process, is easy to produce and can provide a thin-film EL device having a high display quality when used therein; a thin-film EL device using the substrate; and a production process for the device. The thin-film EL device is produced by forming a luminescent layer, other insulating layer and other electrode layer successively on a composite substrate comprising a substrate; an electrode layer embedded in the substrate in such a manner that the electrode layer and the substrate are in one plane; and an insulating layer formed on the surface of a composite comprising the substrate and the electrode layer.Type: GrantFiled: February 26, 2002Date of Patent: April 20, 2004Assignee: TDK CorporationInventors: Katsuto Nagano, Taku Takeishi, Suguru Takayama, Takeshi Nomura, Yukie Nakano, Daisuke Iwanaga
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Patent number: 6709695Abstract: The invention aims to provide a method for preparing a composite substrate, which prevents an insulating layer surface from becoming rugged under the influence of an electrode layer, and eliminates a polishing step, whereby the composite substrate is easy to manufacture and ensures high display quality when applied to thin-film light emitting devices, the composite substrate and an thin-film EL device using the same. The object is attained by a method for preparing a composite substrate by successively applying an electrode paste and an insulator paste onto an electrically insulating substrate as thick films to form a composite substrate precursor having a green electrode layer and a green insulator layer laminated, subjecting the precursor to pressing treatment for smoothing its surface, and firing; the composite substrate and an EL device using the same.Type: GrantFiled: October 5, 2001Date of Patent: March 23, 2004Assignee: TDK CorporationInventors: Taku Takeishi, Katsuto Nagano, Suguru Takayama
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Publication number: 20020172832Abstract: A composite substrate in which the surface of the insulating layer is not influenced by the electrode layer and which requires neither a grinding process nor a sol-gel process, is easy to produce and can provide a thin-film EL device having a high display quality when used therein; a thin-film EL device using the substrate; and a production process for the device. The thin-film EL device is produced by forming a luminescent layer, other insulating layer and other electrode layer successively on a composite substrate comprising a substrate; an electrode layer embedded in the substrate in such a manner that the electrode layer and the substrate are in one plane; and an insulating layer formed on the surface of a composite comprising the substrate and the electrode layer.Type: ApplicationFiled: February 26, 2002Publication date: November 21, 2002Applicant: TDK CORPORATIONInventors: Katsuto Nagano, Taku Takeishi, Suguru Takayama, Takeshi Nomura, Yukie Nakano, Daisuke Iwanaga
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Patent number: 6428914Abstract: A composite substrate in which the surface of the insulating layer is not influenced by the electrode layer and which requires neither a grinding process nor a sol-gel process, is easy to produce and can provide a thin-film EL device having a high display quality when used therein; a thin-film EL device using the substrate; and a production process for the device. The thin-film EL device is produced by forming a luminescent layer, other insulating layer and other electrode layer successively on a composite substrate comprising a substrate; an electrode layer embedded in the substrate in such a manner that the electrode layer and the substrate are in one plane; and an insulating layer formed on the surface of a composite comprising the substrate and the electrode layer.Type: GrantFiled: December 7, 2000Date of Patent: August 6, 2002Assignee: TDK CorporationInventors: Katsuto Nagano, Taku Takeishi, Suguru Takayama, Takeshi Nomura, Yukie Nakano, Daisuke Iwanaga
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Publication number: 20020098368Abstract: The invention aims to provide a method for preparing a composite substrate of substrate/electrode/dielectric layer structure having a thick-film dielectric layer with a smooth surface using a sol-gel solution of high concentration capable of forming a film to a substantial thickness without generating cracks, the composite substrate and an EL device using the same. The object is attained by a method for preparing a composite substrate including in order an electrically insulating substrate, an electrode and an insulator layer formed thereon by a thick film technique, wherein a thin-film insulator layer is formed on the insulator layer by applying to the insulator layer a sol-gel solution obtained by dissolving a metal compound in a diol represented by OH(CH2)nOH as a solvent, followed by drying and firing; the composite substrate and an EL device using the same.Type: ApplicationFiled: October 9, 2001Publication date: July 25, 2002Applicant: TDK CorporationInventors: Taku Takeishi, Katsuto Nagano, Jun Hagiwara, Suguru Takayama
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Publication number: 20020043930Abstract: The invention aims to provide a method for preparing a composite substrate, which prevents an insulating layer surface from becoming rugged under the influence of an electrode layer, and eliminates a polishing step, whereby the composite substrate is easy to manufacture and ensures high display quality when applied to thin-film light emitting devices, the composite substrate and an thin-film EL device using the same. The object is attained by a method for preparing a composite substrate by successively applying an electrode paste and an insulator paste onto an electrically insulating substrate as thick films to form a composite substrate precursor having a green electrode layer and a green insulator layer laminated, subjecting the precursor to pressing treatment for smoothing its surface, and firing; the composite substrate and an EL device using the same.Type: ApplicationFiled: October 5, 2001Publication date: April 18, 2002Applicant: TDK CORPORATIONInventors: Taku Takeishi, Katsuto Nagano, Suguru Takayama
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Publication number: 20020037430Abstract: The invention aims to provide a composite substrate which suppresses reaction of a substrate with a dielectric layer that can otherwise cause degradation of the dielectric layer and which can be sintered at high temperature while minimizing the occurrence of cracks in the dielectric layer, and an EL device using the composite substrate. The object is attained by a composite substrate in which an electrode and a dielectric layer are successively formed on an electrically insulating substrate, the substrate having a coefficient of thermal expansion of 10-20 ppm/K, and an EL device using the composite substrate.Type: ApplicationFiled: October 9, 2001Publication date: March 28, 2002Applicant: TDK CorporationInventors: Taku Takeishi, Katsuto Nagano, Suguru Takayama, Yoshihiko Yano
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Publication number: 20010015619Abstract: The invention provides an EL device having a structure in which a first electrode 12 formed according to a predetermined pattern, a first insulator layer 13, an electroluminescence-producing light emitting layer 14, a second insulator layer 15 and a second electrode layer 16 are successively stacked on an electrical insulating substrate 11. At least one of the first insulator layer 13 and the second insulator layer 15 contains as a main component barium titanate and as subordinate components magnesium oxide, manganese oxide, yttrium oxide, at least one oxide selected from barium oxide and calcium oxide and silicon oxide. The ratios of magnesium oxide, manganese oxide, yttrium oxide, barium oxide, calcium oxide and silicon oxide with respect to 100 moles of barium titanate are: 1 MgO: 0.1 to 3 moles, MnO: 0.05 to 1.Type: ApplicationFiled: December 8, 2000Publication date: August 23, 2001Applicant: TDK CORPORATIONInventors: Katsuto Nagano, Takeshi Nomura, Taku Takeishi, Suguru Takayama
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Publication number: 20010003614Abstract: A composite substrate in which the surface of the insulating layer is not influenced by the electrode layer and which requires neither a grinding process nor a sol-gel process, is easy to produce and can provide a thin-film EL device having a high display quality when used therein; a thin-film EL device using the substrate; and a production process for the device. The thin-film EL device is produced by forming a luminescent layer, other insulating layer and other electrode layer successively on a composite substrate comprising a substrate; an electrode layer embedded in the substrate in such a manner that the electrode layer and the substrate are in one plane; and an insulating layer formed on the surface of a composite comprising the substrate and the electrode layer.Type: ApplicationFiled: December 7, 2000Publication date: June 14, 2001Applicant: TDK CORPORATIONInventors: Katsuto Nagano, Taku Takeishi, Suguru Takayama, Takeshi Nomura, Yukie Nakano, Daisuke Iwanaga
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Patent number: 5968612Abstract: The invention provides a method for preparing a silicon thin film at a high deposition rate or a silicon compound thin film having a high dielectric strength and high hardness, without causing damage to other structure films or forming flakes during film deposition. The method for preparing a silicon or silicon compound thin film involves evaporating a material by means of a high density plasma gun, and depositing a thin film of silicon or silicon compound on a substrate.Type: GrantFiled: June 2, 1998Date of Patent: October 19, 1999Assignee: TDK CorporationInventors: Suguru Takayama, Michio Arai
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Patent number: 5590099Abstract: In a magneto-optical recording disc of the magnetic field modulation recording mode, recording of information for the first time is carried out in an optical modulation mode at a linear velocity which is higher than a reading linear velocity. The time required for recording is reduced while the recorded disc produces satisfactory outputs on playback.Type: GrantFiled: December 11, 1995Date of Patent: December 31, 1996Assignee: TDK CorporationInventors: Giichi Shibuya, Masanori Shibahara, Suguru Takayama, Hajime Utsunomiya