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).

  • Publication number: 20210321944
    Abstract: 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: Application
    Filed: August 6, 2019
    Publication date: October 21, 2021
    Applicant: J-SOL MEDICAL CO., LTD.
    Inventor: Takeshi OOI
  • Patent number: 9127439
    Abstract: 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: Grant
    Filed: February 1, 2011
    Date of Patent: September 8, 2015
    Assignee: Komatsu Ltd.
    Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama, Hisashi Asada
  • Patent number: 9022749
    Abstract: 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: Grant
    Filed: March 30, 2009
    Date of Patent: May 5, 2015
    Assignee: Komatsu Ltd.
    Inventors: Teruo Akiyama, Hisashi Asada, Jin Kitajima, Kazuhiro Maruta, Takeshi Ooi, Masashi Ichihara
  • Patent number: 9002590
    Abstract: 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: Grant
    Filed: February 18, 2009
    Date of Patent: April 7, 2015
    Assignee: Komatsu, Ltd.
    Inventors: Teruo Akiyama, Hisashi Asada, Takeshi Ooi
  • Patent number: 8701401
    Abstract: 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: Grant
    Filed: February 1, 2011
    Date of Patent: April 22, 2014
    Assignee: Komatsu Ltd.
    Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama
  • Publication number: 20120304635
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: December 6, 2012
    Applicant: KOMATSU LTD.
    Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama, Hisashi Asada
  • Publication number: 20120304634
    Abstract: 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: Application
    Filed: February 1, 2011
    Publication date: December 6, 2012
    Applicant: KOMATSU LTD.
    Inventors: Takeshi Ooi, Masashi Ichihara, Teruo Akiyama
  • Patent number: 8118886
    Abstract: 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: Grant
    Filed: July 25, 2007
    Date of Patent: February 21, 2012
    Assignees: The Furukawa Electric Co., Ltd., The University of Tokyo
    Inventors: Hiroaki Rikihisa, Yoshinori Matsunaga, Tetsuya Hamaguchi, Takeshi Ooi
  • Publication number: 20110020146
    Abstract: 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: Application
    Filed: March 30, 2009
    Publication date: January 27, 2011
    Inventors: Teruo Akiyama, Hisashi Asada, Jin Kitajima, Kazuhiro Maruta, Takeshi Ooi, Masashi Ichihara
  • Publication number: 20100332102
    Abstract: 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: Application
    Filed: February 18, 2009
    Publication date: December 30, 2010
    Inventors: Teruo Akiyama, Hisashi Asada, Takeshi Ooi
  • Patent number: 7632388
    Abstract: 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: Grant
    Filed: October 12, 2007
    Date of Patent: December 15, 2009
    Assignees: The Furukawa Electric Co., Ltd., The University of Tokyo
    Inventors: Hiroaki Rikihisa, Tetsuya Hamaguchi, Takeshi Ooi
  • Publication number: 20080098917
    Abstract: 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: Application
    Filed: October 12, 2007
    Publication date: May 1, 2008
    Applicants: THE FURUKAWA ELECTRIC CO., LTD., THE UNIVERSITY OF TOKYO
    Inventors: Hiroaki Rikihisa, Tetsuya Hamaguchi, Takeshi Ooi
  • Publication number: 20080026267
    Abstract: 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: Application
    Filed: July 25, 2007
    Publication date: January 31, 2008
    Applicants: THE FURUKAWA ELECTRIC CO., LTD., THE UNIVERSITY OF TOKYO
    Inventors: Hiroaki Rikihisa, Yoshinori Matsunaga, Tetsuya Hamaguchi, Takeshi Ooi