Patents by Inventor Takeshi Ooi
Takeshi Ooi 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: 20210321944Abstract: A catheter tube unit 2a of the present invention is housed in a catheter tube 2 of an electrode catheter 1, and used for the catheter tube whose distal end is made bendable and stretchable through a wire 5 fixed to the distal end, when the wire is manipulated from a base end side. The catheter tube unit includes the wire, a long and integrated structure 10 including at least a core tube 6 through which the wire is inserted, a plurality of lead wires 7, 7 . . . arranged around an outer circumference of the core tube and connected to electrodes 4, 4 . . . , and a sheath 8 that envelopes the plurality of lead wires overall at least over the exterior, and an exterior tube 11 composed of an extrusion-molded article arranged over the outer circumferential face of the structure, while placing the structure as a core.Type: ApplicationFiled: August 6, 2019Publication date: October 21, 2021Applicant: J-SOL MEDICAL CO., LTD.Inventor: Takeshi OOI
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Patent number: 9127439Abstract: A first target engine speed is set in response to a command value commanded by a command unit. A second target engine speed equal to or lower than the first target engine speed is set based on the first target engine speed. When the first target engine speed is reduced, the second target engine speed is set to be constant or be decreased and a reduction range for decreasing the first target engine speed to the second target engine speed is set to be decreased. The reduction range is set at zero when the first target engine speed is equal to or lower than an engine speed at least at a maximum torque point.Type: GrantFiled: February 1, 2011Date of Patent: September 8, 2015Assignee: Komatsu Ltd.Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama, Hisashi Asada
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Patent number: 9022749Abstract: The system includes: a variable displacement hydraulic pump supplying pressure oil to a hydraulic actuator; a pressure detector detecting a pump discharge pressure from the hydraulic pump; a control valve controlling a supply of the pressure oil to the hydraulic actuator; a controller controlling a pump displacement of the hydraulic pump; a hydraulic motor rotating an upper structure of the construction machine; a swing relief valve defining a relief pressure of the hydraulic motor; and a control lever switching a control valve for the hydraulic motor. The controller includes: an adjuster that, when a pump discharge pressure detected by the pressure detector exceeds a first set value, conducts an adjustment to reduce the pump displacement; and a canceller that cancels the adjustment when the pump discharge pressure falls below a second set value. The second set value is equal to or larger than the first set value.Type: GrantFiled: March 30, 2009Date of Patent: May 5, 2015Assignee: Komatsu Ltd.Inventors: Teruo Akiyama, Hisashi Asada, Jin Kitajima, Kazuhiro Maruta, Takeshi Ooi, Masashi Ichihara
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Patent number: 9002590Abstract: A first target engine speed N1 and a high-speed control area F1 are set according to a command value commanded by a command unit. A second target engine speed N2 and a high-speed control area F2 defined on a low-speed side are set according to the first target engine speed N1. A pump displacement D and an engine torque T of a variable displacement hydraulic pump are detected so that a target engine speed N corresponding to each of the detected pump displacement and engine torque is detected according to a preset relationship between a the pump displacement D and the target engine speed N and a preset relationship between the engine torque T and the target engine speed N during an engine control at the high-speed control area F2. The drive of the engine is controlled so that the engine is driven at the target engine speed N.Type: GrantFiled: February 18, 2009Date of Patent: April 7, 2015Assignee: Komatsu, Ltd.Inventors: Teruo Akiyama, Hisashi Asada, Takeshi Ooi
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Patent number: 8701401Abstract: A first target engine speed is set in response to a command value commanded by a command unit and a second target engine speed lower than the first target engine speed is set based on the first target engine speed. A reduction range from the first target engine speed to the second target engine speed is set according to a type of a hydraulic actuator operated by an operation lever or a combination of plural hydraulic actuators operated by an operation lever.Type: GrantFiled: February 1, 2011Date of Patent: April 22, 2014Assignee: Komatsu Ltd.Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama
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Publication number: 20120304635Abstract: A first target engine speed is set in response to a command value commanded by a command unit. A second target engine speed equal to or lower than the first target engine speed is set based on the first target engine speed. When the first target engine speed is reduced, the second target engine speed is set to be constant or be decreased and a reduction range for decreasing the first target engine speed to the second target engine speed is set to be decreased. The reduction range is set at zero when the first target engine speed is equal to or lower than an engine speed at least at a maximum torque point.Type: ApplicationFiled: February 1, 2011Publication date: December 6, 2012Applicant: KOMATSU LTD.Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama, Hisashi Asada
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Publication number: 20120304634Abstract: A first target engine speed is set in response to a command value commanded by a command unit and a second target engine speed lower than the first target engine speed is set based on the first target engine speed. A reduction range from the first target engine speed to the second target engine speed is set according to a type of a hydraulic actuator operated by an operation lever or a combination of plural hydraulic actuators operated by an operation lever.Type: ApplicationFiled: February 1, 2011Publication date: December 6, 2012Applicant: KOMATSU LTD.Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama
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Patent number: 8118886Abstract: A fuel mixture for fuel cells, comprising a gelled product containing at least a fuel and a gelling agent, in which reliquefaction for the fuel of the gelled product is brought about in the coexistence with a reliquefying agent; and a method of extracting a fuel for fuel cells, including: providing a gel structure in which a fuel is incorporated into a network structure of a gelling agent, with a reliquefying agent dispersed therein; adding a reliquefaction inducing agent to the gel structure to make the reliquefying agent break the network structure of the gelling agent, and thereby reliquefying and extracting the fuel.Type: GrantFiled: July 25, 2007Date of Patent: February 21, 2012Assignees: The Furukawa Electric Co., Ltd., The University of TokyoInventors: Hiroaki Rikihisa, Yoshinori Matsunaga, Tetsuya Hamaguchi, Takeshi Ooi
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Publication number: 20110020146Abstract: The system includes: a variable displacement hydraulic pump supplying pressure oil to a hydraulic actuator; a pressure detector detecting a pump discharge pressure from the hydraulic pump; a control valve controlling a supply of the pressure oil to the hydraulic actuator; a controller controlling a pump displacement of the hydraulic pump; a hydraulic motor rotating an upper structure of the construction machine; a swing relief valve defining a relief pressure of the hydraulic motor; and a control lever switching a control valve for the hydraulic motor. The controller includes: an adjuster that, when a pump discharge pressure detected by the pressure detector exceeds a first set value, conducts an adjustment to reduce the pump displacement; and a canceller that cancels the adjustment when the pump discharge pressure falls below a second set value. The second set value is equal to or larger than the first set value.Type: ApplicationFiled: March 30, 2009Publication date: January 27, 2011Inventors: Teruo Akiyama, Hisashi Asada, Jin Kitajima, Kazuhiro Maruta, Takeshi Ooi, Masashi Ichihara
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Publication number: 20100332102Abstract: A first target engine speed N1 and a high-speed control area F1 are set according to a command value commanded by a command unit. A second target engine speed N2 and a high-speed control area F2 defined on a low-speed side are set according to the first target engine speed N1. A pump displacement D and an engine torque T of a variable displacement hydraulic pump are detected so that a target engine speed N corresponding to each of the detected pump displacement and engine torque is detected according to a preset relationship between a the pump displacement D and the target engine speed N and a preset relationship between the engine torque T and the target engine speed N during an engine control at the high-speed control area F2. The drive of the engine is controlled so that the engine is driven at the target engine speed N.Type: ApplicationFiled: February 18, 2009Publication date: December 30, 2010Inventors: Teruo Akiyama, Hisashi Asada, Takeshi Ooi
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Patent number: 7632388Abstract: A liquid actuator, which contains: an electrolyte layer (14, 114) containing a liquid, two or more electrically separated electrode parts (13a, 13b, 113a, 113b) on one or both sides of the electrolyte layer, and a water-repellent layer (12, 112) having a porous structure on an outside surface of at least one of the electrode parts, in which the electrolyte layer (14, 114), the electrode parts (13a, 13b, 113a, 113b), and the water-repellent layer (12, 112) form a structural body, wherein voltage is applied across the plural electrode parts (13a, 113a) including the one provided with the water-repellent layer (12, 112), and the applied voltage is adjusted to change the superficial wettability of the structural body.Type: GrantFiled: October 12, 2007Date of Patent: December 15, 2009Assignees: The Furukawa Electric Co., Ltd., The University of TokyoInventors: Hiroaki Rikihisa, Tetsuya Hamaguchi, Takeshi Ooi
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Publication number: 20080098917Abstract: A liquid actuator, which contains: an electrolyte layer (14, 114) containing a liquid, two or more electrically separated electrode parts (13a, 13b, 113a, 113b) on one or both sides of the electrolyte layer, and a water-repellent layer (12, 112) having a porous structure on an outside surface of at least one of the electrode parts, in which the electrolyte layer (14, 114), the electrode parts (13a, 13b, 113a, 113b), and the water-repellent layer (12, 112) form a structural body, wherein voltage is applied across the plural electrode parts (13a, 113a) including the one provided with the water-repellent layer (12, 112), and the applied voltage is adjusted to change the superficial wettability of the structural body.Type: ApplicationFiled: October 12, 2007Publication date: May 1, 2008Applicants: THE FURUKAWA ELECTRIC CO., LTD., THE UNIVERSITY OF TOKYOInventors: Hiroaki Rikihisa, Tetsuya Hamaguchi, Takeshi Ooi
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Publication number: 20080026267Abstract: A fuel mixture for fuel cells, comprising a gelled product containing at least a fuel and a gelling agent, in which reliquefaction for the fuel of the gelled product is brought about in the coexistence with a reliquefying agent; and a method of extracting a fuel for fuel cells, including: providing a gel structure in which a fuel is incorporated into a network structure of a gelling agent, with a reliquefying agent dispersed therein; adding a reliquefaction inducing agent to the gel structure to make the reliquefying agent break the network structure of the gelling agent, and thereby reliquefying and extracting the fuel.Type: ApplicationFiled: July 25, 2007Publication date: January 31, 2008Applicants: THE FURUKAWA ELECTRIC CO., LTD., THE UNIVERSITY OF TOKYOInventors: Hiroaki Rikihisa, Yoshinori Matsunaga, Tetsuya Hamaguchi, Takeshi Ooi