Patents by Inventor Takashi Okubo

Takashi Okubo 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: 20250253396
    Abstract: A nonaqueous electrolyte energy storage device according to an aspect of the present invention includes: a negative electrode including a negative active material including solid graphite; and a nonaqueous electrolyte including a compound represented by the following formula (1). In the formula (1), R1 and R2 are each independently a hydrogen atom or a hydrocarbon group, provided that the total number of carbon atoms of R1 and R2 is 3 or less.
    Type: Application
    Filed: April 12, 2023
    Publication date: August 7, 2025
    Inventors: Takashi OKUBO, Takashi KANEKO
  • Patent number: 12278061
    Abstract: Provided are a conductive polymer-containing dispersion for obtaining a solid electrolytic capacitor with low equivalent series resistance (ESR) while maintaining the capacitance, a method for producing same, and a solid electrolytic capacitor having low ESR while maintaining the capacitance. A conductive polymer-containing dispersion comprising a conjugated conductive polymer (A), a polyanion (B), an additive (C), and a dispersion medium (D), wherein a hydrogen bond term ?H1 of the additive (C) as a Hansen solubility parameter is 5.0 to 20.0 MPa0.5.
    Type: Grant
    Filed: December 18, 2023
    Date of Patent: April 15, 2025
    Assignee: Resonac Corporation
    Inventors: Shingo Sugimoto, Hiroki Yamada, Takashi Okubo, Yuichiro Asoma
  • Publication number: 20250118500
    Abstract: Provided are a conductive polymer-containing dispersion for obtaining a solid electrolytic capacitor with low equivalent series resistance (ESR) while maintaining the capacitance, a method for producing same, and a solid electrolytic capacitor having low ESR while maintaining the capacitance. A conductive polymer-containing dispersion comprising a conjugated conductive polymer (A), a polyanion (B), an additive (C), and a dispersion medium (D), wherein a hydrogen bond term ?H1 of the additive (C) as a Hansen solubility parameter is 5.0 to 20.0 MPa0.5.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 10, 2025
    Applicant: Resonac Corporation
    Inventors: Shingo SUGIMOTO, Hiroki YAMADA, Takashi OKUBO, Yuichiro ASOMA
  • Publication number: 20250069818
    Abstract: Provided are a method for producing a polymer dispersion for a solid electrolytic capacitor which enables production of a solid electrolytic capacitor having a large capacitance and a low equivalent series resistance, and a method for producing a solid electrolytic capacitor using the polymer dispersion. The method for producing a polymer dispersion for a solid electrolytic capacitor according to the present invention includes a step (1) of polymerizing a monomer as a constitutional unit of a conjugated conductive polymer in a liquid containing at least one of a seed particle with protective colloid formed of a polyanion and a polyanion to obtain a polymer-containing liquid; a step (2) of performing a first dispersion treatment on the polymer-containing liquid to obtain a dispersion (a); and a step (3) of adding an electric conductivity improver to the dispersion (a), and performing a second dispersion treatment to obtain a dispersion (b).
    Type: Application
    Filed: September 20, 2022
    Publication date: February 27, 2025
    Applicant: Resonac Corporation
    Inventors: Hiroki YAMADA, Miyo FUJITA, Takashi OKUBO
  • Publication number: 20240339663
    Abstract: A nonaqueous electrolyte energy storage device according to an aspect of the present invention has an end-of-discharge voltage of 3.2 V or higher in normal use. and includes a nonaqueous electrolyte containing sulfates including a plurality of sulfur atoms in one molecule.
    Type: Application
    Filed: November 28, 2022
    Publication date: October 10, 2024
    Inventors: Akira KISHIMOTO, Takashi OKUBO
  • Patent number: 11721493
    Abstract: A liquid dispersion composition for solid electrolytic capacitor production, containing a conjugated conductive polymer prepared by polymerizing a monomer compound in a dispersion medium containing seed particles with protective colloid formed of a polyanion or in a dispersion medium containing a polyanion, and a compound (a) represented by a general formula (1), where R1 to R6 and k are as defined in the description; and a method for producing a solid electrolytic capacitor, including a step of adhering the composition to a porous anode body made of a valve action metal having a dielectric coating film on the surface thereof, and a step of removing the dispersion medium from the liquid dispersion composition having adhered to the porous anode body to form a solid electrolyte layer
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 8, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Takeshi Kawamoto, Takashi Okubo
  • Patent number: 11591480
    Abstract: A method of manufacturing a solid electrolytic capacitor, including: a step (A) of providing a conjugated conductive polymer-containing dispersion by polymerizing, in a dispersion medium containing seed particles turned into protective colloid by a polyanion or in a dispersion medium containing the polyanion, a monomer for obtaining a conjugated conductive polymer; a step (B) of preparing a dispersion containing a morpholine compound and the conjugated conductive polymer by adding the morpholine compound to the conjugated conductive polymer-containing dispersion; a step (C) of causing the dispersion to adhere to a porous anode body formed of a valve metal having a dielectric film on a surface thereof; and a step (D) of forming a solid electrolyte layer by removing the dispersion medium from the dispersion containing the morpholine compound and the conjugated conductive polymer, the dispersion adhering to the porous anode body.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: February 28, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Motoaki Araki, Takashi Okubo
  • Patent number: 11300168
    Abstract: An automatic transmission includes: a multi-disc brake including first and second friction engagement elements which are alternately arranged in an axial direction, and a tube that supplies lubricating oil to the first friction engagement element and the second friction engagement element in a transmission case. Further, the tube has injection holes that inject the lubricating oil toward a spline groove, which is fitted with spline teeth of the first friction engagement element on an inner peripheral surface of the transmission case, and the injection holes open toward a gap, which is formed between the spline groove and the spline teeth, and inject the lubricating oil to cause the lubricating oil to contact a surface of the spline groove located above the spline teeth.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: April 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Okubo, Kozo Yamamoto, Keisuke Ninomiya, Hironori Asaoka
  • Publication number: 20210130628
    Abstract: A method of manufacturing a solid electrolytic capacitor, including: a step (A) of providing a conjugated conductive polymer-containing dispersion by polymerizing, in a dispersion medium containing seed particles turned into protective colloid by a polyanion or in a dispersion medium containing the polyanion, a monomer for obtaining a conjugated conductive polymer; a step (B) of preparing a dispersion containing a morpholine compound and the conjugated conductive polymer by adding the morpholine compound to the conjugated conductive polymer-containing dispersion; a step (C) of causing the dispersion to adhere to a porous anode body formed of a valve metal having a dielectric film on a surface thereof; and a step (D) of forming a solid electrolyte layer by removing the dispersion medium from the dispersion containing the morpholine compound and the conjugated conductive polymer, the dispersion adhering to the porous anode body.
    Type: Application
    Filed: May 9, 2018
    Publication date: May 6, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Motoaki ARAKI, Takashi OKUBO
  • Publication number: 20200141457
    Abstract: An automatic transmission includes: a multi-disc brake including first and second friction engagement elements which are alternately arranged in an axial direction, and a tube that supplies lubricating oil to the first friction engagement element and the second friction engagement element in a transmission case. Further, the tube has injection holes that inject the lubricating oil toward a spline groove, which is fitted with spline teeth of the first friction engagement element on an inner peripheral surface of the transmission case, and the injection holes open toward a gap, which is formed between the spline groove and the spline teeth, and inject the lubricating oil to cause the lubricating oil to contact a surface of the spline groove located above the spline teeth.
    Type: Application
    Filed: October 11, 2019
    Publication date: May 7, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi OKUBO, Kozo YAMAMOTO, Keisuke NINOMIYA, Hironori ASAOKA
  • Patent number: 10514093
    Abstract: A shift control system for vehicle includes a transmission that performs an upshift based on an accelerator opening, comprising: a detector that detects a longitudinal acceleration the vehicle, a calculator that calculates a change amount per unit time of the accelerator opening, and a controller that controls the transmission. The controller repeatedly executes upshift to reduce a speed ratio of the transmission based on a second condition that determines a shift timing of the upshift, upon satisfaction of a first condition. The first condition is satisfied if the acceleration increasing the vehicle speed is greater than or equal to a predetermined first threshold value, the change amount is in a stable state falling within a certain range, and a time period that the change amount keeps falling within the certain range has exceeded a second threshold value.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: December 24, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shogo Tsuge, Ayumu Sagawa, Akira Takeichi, Takashi Okubo
  • Patent number: 10069398
    Abstract: A control circuit that controls a switching element includes a first terminal to which a voltage produced by conversion of current flowing through the switching element by a current-to-voltage conversion element is input, a second terminal to which the voltage of a point of contact of an inductor and rectification element or a voltage proportional thereto is input, a filter for smoothing the voltage input into the second terminal, and a voltage comparison circuit for comparing the voltage smoothed by the filter and the voltage input into the second terminal. The control circuit performs control such that the switching element is switched from off to on near the point where the inductor current becomes zero based on the voltage comparison circuit output and the switching element is switched from on to off in response to the voltage applied to the first terminal reaching a prescribed voltage.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: September 4, 2018
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi Okubo, Yukio Murata
  • Publication number: 20180245521
    Abstract: A shift control system for vehicle includes a transmission that performs an upshift based on an accelerator opening, comprising: a detector that detects a longitudinal acceleration the vehicle, a calculator that calculates a change amount per unit time of the accelerator opening, and a controller that controls the transmission. The controller repeatedly executes upshift to reduce a speed ratio of the transmission based on a second condition that determines a shift timing of the upshift, upon satisfaction of a first condition. The first condition is satisfied if the acceleration increasing the vehicle speed is greater than or equal to a predetermined first threshold value, the change amount is in a stable state falling within a certain range, and a time period that the change amount keeps falling within the certain range has exceeded a second threshold value.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 30, 2018
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shogo TSUGE, Ayumu Sagawa, Akira Takeichi, Takashi Okubo
  • Publication number: 20170353100
    Abstract: The present invention addresses the problem of detecting the timing at which an inductor current becomes zero, turning on a switching element at the optimal timing, and enhancing power efficiency without increasing part quantity or external terminal quantity.
    Type: Application
    Filed: December 18, 2015
    Publication date: December 7, 2017
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi OKUBO, Yukio MURATA
  • Patent number: 9746121
    Abstract: A spacer is inserted into a space between an existing pipe and a rehabilitating pipe to adjust a position of the rehabilitating pipe with respect to the existing pipe. The spacer has an elongated shape with both end portions in a longitudinal direction thereof cut off at an oblique angle and has a transverse width increasing gradually from an upper surface portion to a bottom surface portion. A space is formed in the bottom surface portion to correspond to a shape of the upper surface portion, thereby allowing a number of the spacers to be stacked on one another in a thickness direction thereof. The upper surface portion has a flat-plate shape with a flat rectangular surface region.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: August 29, 2017
    Assignee: SHOHAN GOSEI-JUSHI SEISAKISHO K.K.
    Inventors: Takao Kamiyama, Makoto Ishida, Takeshi Hasegawa, Katsuyori Miura, Takashi Okubo
  • Publication number: 20160238183
    Abstract: A spacer for positioning a rehabilitating pipe has an elongated shape with both end portions in a longitudinal direction cut off at an angle. The spacer has a transverse width increasing gradually from an upper surface portion to a bottom surface portion and a space formed in the bottom surface portion to correspond to a shape of the upper surface portion, thereby allowing a plurality of the spacers to be stacked on one another in the thickness direction.
    Type: Application
    Filed: February 9, 2016
    Publication date: August 18, 2016
    Inventors: Takao KAMIYAMA, Makoto ISHIDA, Takeshi HASEGAWA, Katsuyori MIURA, Takashi OKUBO
  • Patent number: 9271346
    Abstract: A lighting power supply device includes a control circuit controlling a transistor that controls a drive current flown through a lamp, receiving a pulsating flow converted from an alternating current by a rectifying circuit rectifying the alternating current subjected to phase control by a phase-controlled dimmer, and generating/outputting direct current voltage/current supplied to the lamp. The control circuit includes a time-voltage conversion circuit converting a time decided according to a phase of a voltage corresponding to the pulsating flow into a voltage; and a terminal to which a capacitor with an arbitrary capacitance value is connectable. The time-voltage conversion circuit allows the capacitor to generate a charging voltage corresponding to the phase of the pulsating flow. A sample-and-hold circuit takes in the charging voltage of the capacitor at predetermined timing corresponding to a change of an output of a voltage comparison circuit, and holds/outputs the taken-in voltage until next timing.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 23, 2016
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventors: Takashi Okubo, Yuji Yamanaka
  • Patent number: 9017146
    Abstract: The wafer polishing apparatus comprises a polishing plate, a polishing head capable of holding a wafer, and a slurry supplying section. The polishing plate includes: a plurality of concentric polishing zones, each of which has a prescribed width for polishing the wafer and on each of which a polishing cloth is adhered; and a groove for discharging slurry being formed between the polishing zones. A head cleaning section, which cleans the polishing head, or a wafer cleaning section, which cleans the polished wafer, is provided to a center part of the polishing plate and located on the inner side of the innermost polishing zone.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: April 28, 2015
    Assignees: Fujikoshi Machinery Corp., National Institute of Advanced Industrial Science and Technology
    Inventors: Yoshio Nakamura, Yoshio Otsuka, Takashi Okubo, Kazutaka Shibuya, Takayuki Fuse, Shiro Hara, Sommawan Khumpuang, Shinichi Ikeda
  • Patent number: 8988002
    Abstract: A lighting power supply device receives a voltage converted from an alternating current to a direct current by a rectifying circuit rectifying the alternating current whose phase is controlled by a phase control type dimmer, and generates and outputs a direct current voltage/current to be supplied to a load. The lighting power supply device includes: a control circuit, and the control circuit gradually decreases a current drawn from the rectifying circuit from a predetermined current value set in advance, determines a current value immediately before detecting a malfunction of the phase control type dimmer as a drawn current value, and performs current control so as to maintain the determined current value.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: March 24, 2015
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Takashi Okubo, Taro Isogai
  • Patent number: 8961290
    Abstract: An information processing device performs area selection processing in which a first game point or a second game point specified by a player is consumed to select an area from among a plurality of areas based on the amount of consumption of the first game points or the second game points, wherein the range of selectable areas differs between a case where the first game point is consumed to select an area and a case where the second game point is consumed to select an area, and lottery processing in which a game content to be acquired by the player is selected by lottery, based on a drawing probability associated with the area selected.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: February 24, 2015
    Assignee: DeNA Co., Ltd.
    Inventors: Yusuke Sumaki, Takashi Okubo, Riketsu Kyou