Patents by Inventor Takeo Ito

Takeo Ito 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).

  • Patent number: 11955596
    Abstract: A solid electrolyte that includes a lithium ion conductive material having a garnet-type structure, a lithium ion conductive material having a LISICON-type structure, and a compound containing Li and B.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: April 9, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ryohei Takano, Makoto Yoshioka, Akisuke Ito, Takeo Ishikura
  • Patent number: 11942596
    Abstract: A solid electrolyte material that includes a composite oxide containing Li and Bi, and at least one solid electrolyte having a garnet structure, a perovskite structure, and a LISICON structure.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: March 26, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ryohei Takano, Makoto Yoshioka, Takeo Ishikura, Akisuke Ito
  • Patent number: 11927225
    Abstract: A sliding spline shaft device of the present invention includes a male spline and a female spline that is fitted to the male spline in an axially slidable manner, and at least one of the splines has a surface processed layer. The surface processed layer includes an undercoat layer, an intermediate layer containing phosphate, and a topcoat layer containing solid lubricant, in this order. The undercoat layer contains iron nitride and/or iron carbide. Thus, the surface of a base material has high hardness. As a result, microscopic deformation of the sliding surface is reduced, and increase in a real contact area is suppressed, whereby stick-slip is prevented.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: March 12, 2024
    Assignees: NISSAN MOTOR CO., LTD., NIHON PARKERIZING CO., LTD.
    Inventors: Shigetoshi Kashiwabara, Kunio Katada, Shunsuke Hiraiwa, Akihumi Kawaguchi, Takeo Nishijima, Shinichi Suzuki, Yasuyuki Katsumada, Makoto Nakajima, Tokunori Kodama, Masato Ito, Aiki Iwasa
  • Publication number: 20240072490
    Abstract: An electrical connector includes a base supporting electrical terminals. Guide pins are mounted on the base. Recesses recessed inward of the guide pins are formed in side walls of the guide pins. The base is embedded in the recesses. The guide pins are held on the base by the embedding.
    Type: Application
    Filed: January 14, 2022
    Publication date: February 29, 2024
    Inventors: Takeo Fukuda, Keiichi Ito
  • Patent number: 9404047
    Abstract: A start-up method for a hydrocarbon synthesis reaction apparatus, comprising: an initial slurry-loading step in which the slurry is loaded into the reactor at the initial stage of the Fischer-Tropsch synthesis reaction at a lower loading rate than that applied to the reactor in a steady-state operation; and a CO conversion ratio-increasing step in which the liquid level of the slurry in the reactor is raised by adding to the slurry the hydrocarbons synthesized at the early stage of the Fischer-Tropsch synthesis reaction so that the CO conversion ratio is increased in proportion to a rise in the liquid level of the slurry in the reactor.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: August 2, 2016
    Assignees: Japan Oil, Gas and Metals National Corporation, INPEX CORPORATION, JX Nippon Oil & Energy Corporation, Japan Petroleum Exploration Co., Ltd., COSMO OIL CO., LTD., NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD.
    Inventors: Takeo Ito, Atsushi Murata, Eiichi Yamada, Yuzuru Kato, Yasuhiro Onishi
  • Patent number: 9287808
    Abstract: There is obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controller 1 is provided with a main controller 2, and a motor control unit 3 configured to be communicable with the main controller 2 to drive a motor M according to a torque command output from the main controller 2. The motor control unit 3 includes a speed control unit 31 for outputting a torque command, so as to decelerate the motor M, if any failure occurs in communication with the main controller 2 while the motor M is being driven.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 15, 2016
    Assignees: SINFONIA TECHNOLOGY CO., LTD., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeo Ito, Hideaki Moriya, Takeshi Tomizaki, Akira Nakazumi, Yusuke Kamimura
  • Patent number: 9276512
    Abstract: There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller 10 is provided with a current controller 1 for controlling an electric current supplied from an electric accumulator E to a motor M, and a rotation detector 2 for detecting the rotation of the motor M. The current controller 1 supplies only a d-axis current to the motor M according to a discharge command. If the rotation of the motor M is detected by the rotation detector 2 at the time of discharging the electric accumulator E, the current controller 1 controls the d-axis current so as to suppress the rotation of the motor M.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 1, 2016
    Assignees: SINFONIA TECHNOLOGY CO., LTD., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeshi Tomizaki, Yuichi Hamaguchi, Takeo Ito, Akira Nakazumi, Yusuke Kamimura
  • Publication number: 20150267123
    Abstract: A start-up method for a hydrocarbon synthesis reaction apparatus, comprising: an initial slurry-loading step in which the slurry is loaded into the reactor at the initial stage of the Fischer-Tropsch synthesis reaction at a lower loading rate than that applied to the reactor in a steady-state operation; and a CO conversion ratio-increasing step in which the liquid level of the slurry in the reactor is raised by adding to the slurry the hydrocarbons synthesized at the early stage of the Fischer-Tropsch synthesis reaction so that the CO conversion ratio is increased in proportion to a rise in the liquid level of the slurry in the reactor.
    Type: Application
    Filed: November 6, 2013
    Publication date: September 24, 2015
    Inventors: Takeo Ito, Atsushi Murata, Eiichi Yamada, Yuzuru Kato, Yasuhiro Onishi
  • Patent number: 9075418
    Abstract: A damping device includes a calculator calculating a pseudo vibration to cancel a source vibration transmitted from a vibration source to a position to be damped, using an adaptive control algorithm. The canceling vibration is generated according to the pseudo vibration. A vibration detector detects an error vibration remaining at the position. The adaptive control algorithm is adapted by learning to reduce the error vibration. A frequency recognizer recognizes a frequency of the source vibration from a signal related to the vibration source. The frequency of the vibration is used to determine a frequency of the pseudo vibration. A phase difference identifier identifies a phase difference between the error vibration and the canceling vibration according to the pseudo vibration, and a frequency corrector corrects, according to the phase difference, the frequency of the vibration to eliminate the phase difference.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: July 7, 2015
    Assignee: SINFONIA TECHNOLOGY CO., LTD.
    Inventors: Takeshi Tomizaki, Hideaki Moriya, Takeo Ito, Yasushi Muragishi
  • Patent number: 8912737
    Abstract: A linear actuator driving device is provided. The linear actuator driving device includes an electromagnetic driving unit which makes a moving element reciprocate in response to a driving command and an offset correcting unit which corrects the driving command to carry out offset energization to make the center of reciprocation of the moving element be moved in the direction in which deviation between the center of reciprocation of the moving element and the center of the movement possible range is eliminated. The offset correcting unit is configured such that the amplitude information is acquired and, with respect to the amplitude value corresponding to the acquired amplitude information, if the movable amplitude is in a movable area insufficient condition, correction of the driving command is performed and, on the other hand, if the movable amplitude is not in the movable area insufficient condition, correction of the driving command is released.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: December 16, 2014
    Assignee: Sinfonia Technology Co., Ltd.
    Inventors: Hideaki Moriya, Takenori Motoori, Takeo Ito
  • Publication number: 20140354205
    Abstract: There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller 10 is provided with a current controller 1 for controlling an electric current supplied from an electric accumulator E to a motor M, and a rotation detector 2 for detecting the rotation of the motor M. The current controller 1 supplies only a d-axis current to the motor M according to a discharge command. If the rotation of the motor M is detected by the rotation detector 2 at the time of discharging the electric accumulator E, the current controller 1 controls the d-axis current so as to suppress the rotation of the motor M.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicants: SINFONIA TECHNOLOGY CO., LTD., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeshi Tomizaki, Yuichi Hamaguchi, Takeo Ito, Akira Nakazumi, Yusuke Kamimura
  • Publication number: 20140354197
    Abstract: There is obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controller 1 is provided with a main controller 2, and a motor control unit 3 configured to be communicable with the main controller 2 to drive a motor M according to a torque command output from the main controller 2. The motor control unit 3 includes a speed control unit 31 for outputting a torque command, so as to decelerate the motor M, if any failure occurs in communication with the main controller 2 while the motor M is being driven.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 4, 2014
    Applicants: SINFONIA TECHNOLOGY CO., LTD., KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeo Ito, Hideaki Moriya, Takeshi Tomizaki, Akira Nakazumi, Yusuke Kamimura
  • Patent number: 8560129
    Abstract: [Object] To predetermine a target vibration level and keep vibration generated at a position at which vibration is to be controlled equal to or smaller than a target vibration level.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: October 15, 2013
    Assignee: Sinfonia Technology Co., Ltd.
    Inventors: Hideaki Moriya, Yushi Sato, Takeo Ito, Katsuyoshi Nakano, Yasushi Muragishi
  • Patent number: 8471502
    Abstract: A vibration damping apparatus including reference wave production section that produces a reference wave; a fundamental order adaptive algorithm block that calculates fundamental order adaptive filter factors from a vibration detection signal and the reference wave and produces a fundamental order vibration damping current instruction; an amplitude detection section that calculates a peak current value of the fundamental order vibration damping current instruction; and a fundamental order current excess detection section that derives a fundamental order current upper limit value from the fundamental frequency to produce a fundamental order current upper limit excess signal that is output to the fundamental order adaptive algorithm block, which revises the fundamental order adaptive filter factors in a direction in which the vibration damping current instruction is limited within a range.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: June 25, 2013
    Assignee: Sinfonia Technology Co., Ltd.
    Inventors: Hideaki Moriya, Takeshi Tomizaki, Takeo Ito, Yasushi Muragishi, Takayoshi Fujii
  • Publication number: 20130106319
    Abstract: A linear actuator driving device is provided. The linear actuator driving device includes an electromagnetic driving unit which makes a moving element reciprocate in response to a driving command and an offset correcting unit which corrects the driving command to carry out offset energization to make the center of reciprocation of the moving element be moved in the direction in which deviation between the center of reciprocation of the moving element and the center of the movement possible range is eliminated. The offset correcting unit is configured such that the amplitude information is acquired and, with respect to the amplitude value corresponding to the acquired amplitude information, if the movable amplitude is in a movable area insufficient condition, correction of the driving command is performed and, on the other hand, if the movable amplitude is not in the movable area insufficient condition, correction of the driving command is released.
    Type: Application
    Filed: July 1, 2011
    Publication date: May 2, 2013
    Applicant: SINFONIA TECHNOLOGY CO., LTD.
    Inventors: Hideaki Moriya, Takenori Motoori, Takeo Ito
  • Patent number: 8381579
    Abstract: The present invention provides a vibration damping device which can enhance a vibration damping effect even in a case where a vibration damping target position and a vibration damping force generation position are different from each other.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: February 26, 2013
    Assignee: Sinfonia Technology Co., Ltd.
    Inventors: Yushi Sato, Hideaki Moriya, Takeo Ito, Takayoshi Fujii, Takashi Fukunaga, Katsuyoshi Nakano, Hiroshi Nakagawa, Hidetoshi Katada, Takeshi Tomizaki, Takashi Onoue, Yasushi Muragishi
  • Publication number: 20120293094
    Abstract: A vibration damping apparatus including reference wave production section that produces a reference wave; a fundamental order adaptive algorithm block that calculates fundamental order adaptive filter factors from a vibration detection signal and the reference wave and produces a fundamental order vibration damping current instruction; an amplitude detection section that calculates a peak current value of the fundamental order vibration damping current instruction; and a fundamental order current excess detection section that derives a fundamental order current upper limit value from the fundamental frequency to produce a fundamental order current upper limit excess signal that is output to the fundamental order adaptive algorithm block, which revises the fundamental order adaptive filter factors in a direction in which the vibration damping current instruction is limited within a range.
    Type: Application
    Filed: June 26, 2012
    Publication date: November 22, 2012
    Applicant: SINFONIA TECHNOLOGY CO., LTD.
    Inventors: Hideaki MORIYA, Takeshi TOMIZAKI, Takeo ITO, Yasushi MURAGISHI, Takayoshi FUJII
  • Patent number: 8300097
    Abstract: A screen display section and a control section are formed as separate units, enabling the sections to be separated from each other and integrally assembled together through a rigid bracket. Further, the screen display section and the control section respectively independently have connector receiving spaces. By this construction, the screen display section and the control section can be separated from each other and integrated with each other when required, and even in bad weather, water drops do not enter into the insides of the screen display section and the control section and into the connector receiving spaces, which enables safe and easy separation operation and integration operation.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: October 30, 2012
    Assignee: Komatsu Ltd.
    Inventor: Takeo Ito
  • Publication number: 20120226414
    Abstract: A damping device includes a calculator calculating a pseudo vibration to cancel a source vibration transmitted from a vibration source to a position to be damped, using an adaptive control algorithm. The canceling vibration is generated according to the pseudo vibration. A vibration detector detects an error vibration remaining at the position. The adaptive control algorithm is adapted by learning to reduce the error vibration. A frequency recognizer recognizes a frequency of the source vibration from a signal related to the vibration source. The frequency of the vibration is used to determine a frequency of the pseudo vibration. A phase difference identifier identifies a phase difference between the error vibration and the canceling vibration according to the pseudo vibration, and a frequency corrector corrects, according to the phase difference, the frequency of the vibration to eliminate the phase difference.
    Type: Application
    Filed: May 17, 2012
    Publication date: September 6, 2012
    Applicant: SINFONIA TECHNOLOGY CO., LTD.
    Inventors: Takeshi TOMIZAKI, Hideaki MORIYA, Takeo ITO, Yasushi MURAGISHI
  • Patent number: D659939
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: May 15, 2012
    Assignee: Komatsu Ltd.
    Inventors: Tomohiro Saitou, Takeo Ito, Masahiko Hosaka