Patents by Inventor Takashi Gotoh

Takashi Gotoh 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: 9633770
    Abstract: An epsilon-type iron oxide having an Fe-site that is substituted with a platinum group element, provided that Fe of a D-site of the epsilon-type iron oxide is not substituted with the platinum group element.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: April 25, 2017
    Assignees: THE UNIVERSITY OF TOKYO, DOWA ELECTRONICS MATERIALS CO., LTD.
    Inventors: Shin-ichi Ohkoshi, Shunsuke Sakurai, Asuka Namai, Sayaka Umeda, Hiroshi Hachiya, Kazuyuki Matsumoto, Takashi Gotoh
  • Publication number: 20160343484
    Abstract: An epsilon-type iron oxide having an Fe-site that is substituted with a platinum group element, provided that Fe of a D-site of the epsilon-type iron oxide is not substituted with the platinum group element.
    Type: Application
    Filed: August 8, 2016
    Publication date: November 24, 2016
    Inventors: Shin-ichi OHKOSHI, Shunsuke SAKURAI, Asuka NAMAI, Sayaka UMEDA, Hiroshi HACHIYA, Kazuyuki MATSUMOTO, Takashi GOTOH
  • Patent number: 9458026
    Abstract: To provide a method for improving a coercive force of epsilon-type iron oxide particles, and an epsilon-type iron oxide. Specifically, to provide a method for improving the coercive force of an epsilon-type iron oxide comprising: substituting Fe-site of the epsilon-type iron oxide with other element, while not substituting Fe of D-site in the epsilon-type iron oxide with other element, and the epsilon type iron oxide.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: October 4, 2016
    Assignees: THE UNIVERSITY OF TOKYO, DOWA ELECTRONICS MATERIALS CO., LTD.
    Inventors: Shin-ichi Ohkoshi, Shunsuke Sakurai, Asuka Namai, Sayaka Umeda, Hiroshi Hachiya, Kazuyuki Matsumoto, Takashi Gotoh
  • Patent number: 9097213
    Abstract: A carburetor includes a main fuel path connected to a main nozzle and a slow fuel path connected to a slow port. The main fuel path and the slow fuel path are separated from each other and are independently communicated to a constant fuel chamber below a fuel level of the fuel chamber. The slow fuel path includes a first slow jet located above the fuel level and a second slow jet located in the downstream of the first slow jet. A opening size of the second slow jet is smaller than that of the first slow jet, and the first and second slow jets are arranged in series.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 4, 2015
    Assignee: KEIHIN CORPORATION
    Inventors: Takashi Gotoh, Yasushi Ono
  • Patent number: 9041371
    Abstract: A disclosed switching regulator includes a speed-up circuit for speeding up an operation of an error amplifier circuit during the time starting from when a switching element is turned OFF based on an output of an abnormality detection circuit, or starting from a fixed period of time after the switching element is turned OFF based on the output of the abnormality detection circuit, until the next time the switching element is again turned OFF based on an output of a PWM comparison circuit.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: May 26, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventor: Takashi Gotoh
  • Patent number: 8978379
    Abstract: The base of an actuator housing 10 is arranged to face the side of a turbine housing, and a motor 16 is fixed to a motor support post that is protrusively provided toward the top of the actuator housing 10 such that the motor 16 is kept at a distance from the turbine housing.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: March 17, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takashi Gotoh
  • Publication number: 20150008629
    Abstract: A spiral spring for reducing maximum stress value and variations in stress distribution. The spiral spring is elastically deformable from a minimally to maximally deformed state. In maximally deformed state, the spiral spring includes a non-contact section, wherein at least some spring material portions are adjacent in radial direction not contacting each other, and a contact section, wherein all spring material portions are adjacent in radial direction contacting each other. An inner reference portion is corresponding to a central angle of 80° or more and 160° or less about a spiral center along a direction of spiral portion extension with a reference line connecting the spiral center and outer contact portion, wherein the outer end portion and outer fixing member contact in maximally deformed state, the inner reference portion being on a radially spiral portion inner side. The contact section is on a radially inner reference portion outer side.
    Type: Application
    Filed: November 7, 2012
    Publication date: January 8, 2015
    Applicant: CHO HATSUJO KABUSHIKI KAISHA
    Inventors: Madoka Kuno, Takashi Gotoh, Shoji Ichikawa, Kazuyoshi Nono, Toshinori Imai
  • Patent number: 8779748
    Abstract: An error amplification circuit includes an integrated circuit and a phase compensation capacitor. The integrated circuit includes an error amplifier to amplify a difference between a predetermined reference voltage and an input feedback voltage for output; a current generator circuit to generate a bias current for supply to the error amplifier; a phase compensation resistor; a bias-current control terminal; and a phase compensation terminal connected to an output terminal of the error amplifier via the phase compensation resistor. The phase compensation capacitor is connected to the phase compensation terminal, the phase compensation capacitor being provided outside the integrated circuit.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: July 15, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Gotoh
  • Publication number: 20130249121
    Abstract: A carburetor includes a main fuel path connected to a main nozzle and a slow fuel path connected to a slow port. The main fuel path and the slow fuel path are separated from each other and are independently communicated to a constant fuel chamber below a fuel level of the fuel chamber. The slow fuel path includes a first slow jet located above the fuel level and a second slow jet located in the downstream of the first slow jet. A opening size of the second slow jet is smaller than that of the first slow jet, and the first and second slow jets are arranged in series.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 26, 2013
    Applicant: KEIHIN CORPORATION
    Inventors: Takashi Gotoh, Yasushi Ono
  • Publication number: 20130049502
    Abstract: The base of an actuator housing 10 is arranged to face the side of a turbine housing, and a motor 16 is fixed to a motor support post that is protrusively provided toward the top of the actuator housing 10 such that the motor 16 is kept at a distance from the turbine housing.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 28, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Takashi Gotoh
  • Publication number: 20130038313
    Abstract: A disclosed switching regulator includes a speed-up circuit for speeding up an operation of an error amplifier circuit during the time starting from when a switching element is turned OFF based on an output of an abnormality detection circuit, or starting from a fixed period of time after the switching element is turned OFF based on the output of the abnormality detection circuit, until the next time the switching element is again turned OFF based on an output of a PWM comparison circuit.
    Type: Application
    Filed: March 14, 2011
    Publication date: February 14, 2013
    Inventor: Takashi Gotoh
  • Publication number: 20120263642
    Abstract: To provide a method for improving a coercive force of epsilon-type iron oxide particles, and an epsilon-type iron oxide. Specifically, to provide a method for improving the coercive force of an epsilon-type iron oxide comprising: substituting Fe-site of the epsilon-type iron oxide with other element, while not substituting Fe of D-site in the epsilon-type iron oxide with other element, and the epsilon type iron oxide.
    Type: Application
    Filed: September 30, 2010
    Publication date: October 18, 2012
    Applicants: DOWA ELECTRONICS MATERIALS CO., LTD., THE UNIVERSITY OF TOKYO
    Inventors: Shin-ichi Ohkoshi, Shunsuke Sakurai, Asuka Namai, Sayaka Umeda, Hiroshi Hachiya, Kazuyuki Matsumoto, Takashi Gotoh
  • Publication number: 20120187995
    Abstract: An error amplification circuit includes an integrated circuit and a phase compensation capacitor. The integrated circuit includes an error amplifier to amplify a difference between a predetermined reference voltage and an input feedback voltage for output; a current generator circuit to generate a bias current for supply to the error amplifier; a phase compensation resistor; a bias-current control terminal; and a phase compensation terminal connected to an output terminal of the error amplifier via the phase compensation resistor. The phase compensation capacitor is connected to the phase compensation terminal, the phase compensation capacitor being provided outside the integrated circuit.
    Type: Application
    Filed: January 12, 2012
    Publication date: July 26, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventor: Takashi GOTOH
  • Patent number: 8207715
    Abstract: A soft-start circuit to generate and output a soft-start voltage having a specified gradient. The soft-start circuit includes a slope voltage generator circuit to generate and output multiple slope voltages having different specified gradients, including a steepest slope voltage whose gradient is steepest among the gradients of the multiple slope voltages and a mildest slope voltage whose gradient is mildest thereamong, at least one voltage conversion circuit to receive the slope voltages and output a voltage whose gradient is milder than the gradient of the steepest slope voltage, and a selection circuit to receive at least one specified reference voltage and the voltage generated by the voltage conversion circuit, compare the voltage by the voltage conversion circuit with the specified reference voltage, and output either the voltage or the specified reference voltage as the soft-start voltage in accordance with a comparison result generated by the selection circuit.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: June 26, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Gotoh
  • Publication number: 20100156382
    Abstract: A soft-start circuit to generate and output a soft-start voltage having a specified gradient. The soft-start circuit includes a slope voltage generator circuit to generate and output multiple slope voltages having different specified gradients, including a steepest slope voltage whose gradient is steepest among the gradients of the multiple slope voltages and a mildest slope voltage whose gradient is mildest thereamong, at least one voltage conversion circuit to receive the slope voltages and output a voltage whose gradient is milder than the gradient of the steepest slope voltage, and a selection circuit to receive at least one specified reference voltage and the voltage generated by the voltage conversion circuit, compare the voltage by the voltage conversion circuit with the specified reference voltage, and output either the voltage or the specified reference voltage as the soft-start voltage in accordance with a comparison result generated by the selection circuit.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventor: Takashi Gotoh
  • Patent number: 7226152
    Abstract: An image forming apparatus in which ink depletion detection accuracy will not be deteriorated even if an air bubble is created in an ink supplying path. The image forming apparatus is provided with (a) an ink storage section for storing ink therein, (b) an ink supplying path for supplying, to a print head, the ink stored in the ink storage section, and (c) an electrode for detecting whether the ink is present or absent in the ink supplying path, an amount of the ink supplied into the ink supplying path being 1.0 cc or less per minute.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: June 5, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Matsushita, Hirokazu Nakamura, Naozumi Ueno, Hisashi Yoshimura, Takashi Gotoh, Hiroshi Ishii
  • Patent number: 7156509
    Abstract: An image forming apparatus includes an ink tank; and an ink supplying path for supplying the ink from the ink tank to a print head, wherein the ink supplying path therein includes a filter, which generates negative pressure when the ink is supplied, the negative pressure being smaller than ink absorbing pressure of a nozzle of the print head. Further, the ink tank therein includes, for example, a porous ink absorbing body for retaining ink.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: January 2, 2007
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Matsushita, Hirokazu Nakamura, Naozumi Ueno, Hisashi Yoshimura, Takashi Gotoh, Akio Matsumoto, Hiroshi Ishii
  • Patent number: 6890057
    Abstract: Ink absorption pads are associated with waste ink storage apparatus in ink jet printers. Waste ink is emitted from the tubes. The waste ink is absorbed by the pads.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: May 10, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takashi Gotoh, Hisashi Yoshimura, Naozumi Ueno, Tomomi Tanaka, Masaki Matsushita, Hirokazu Nakamura
  • Publication number: 20050001874
    Abstract: Ink absorption pads are associated with waste ink storage apparatus in ink jet printers. Waste ink is emitted from the tubes. The waste ink is absorbed by the pads.
    Type: Application
    Filed: July 1, 2003
    Publication date: January 6, 2005
    Inventors: Takashi Gotoh, Hisashi Yoshimura, Naozumi Ueno, Tomomi Tanaka, Masaki Matsushita, Hirokazu Nakamura
  • Publication number: 20040218026
    Abstract: An image forming apparatus includes an ink tank; and an ink supplying path for supplying the ink from the ink tank to a print head, wherein the ink supplying path therein includes a filter, which generates negative pressure when the ink is supplied, the negative pressure being smaller than ink absorbing pressure of a nozzle of the print head. Further, the ink tank therein includes, for example, a porous ink absorbing body for retaining ink.
    Type: Application
    Filed: January 28, 2004
    Publication date: November 4, 2004
    Inventors: Masaki Matsushita, Hirokazu Nakamura, Naozumi Ueno, Hisashi Yoshimura, Takashi Gotoh, Akio Matsumoto, Hiroshi Ishii