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).
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Patent number: 9633770Abstract: 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: GrantFiled: August 8, 2016Date of Patent: April 25, 2017Assignees: 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
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Publication number: 20160343484Abstract: 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: ApplicationFiled: August 8, 2016Publication date: November 24, 2016Inventors: Shin-ichi OHKOSHI, Shunsuke SAKURAI, Asuka NAMAI, Sayaka UMEDA, Hiroshi HACHIYA, Kazuyuki MATSUMOTO, Takashi GOTOH
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Patent number: 9458026Abstract: 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: GrantFiled: September 30, 2010Date of Patent: October 4, 2016Assignees: 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
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Patent number: 9097213Abstract: 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: GrantFiled: March 13, 2013Date of Patent: August 4, 2015Assignee: KEIHIN CORPORATIONInventors: Takashi Gotoh, Yasushi Ono
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Patent number: 9041371Abstract: 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: GrantFiled: March 14, 2011Date of Patent: May 26, 2015Assignee: RICOH COMPANY, LTD.Inventor: Takashi Gotoh
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Patent number: 8978379Abstract: 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: GrantFiled: August 20, 2010Date of Patent: March 17, 2015Assignee: Mitsubishi Electric CorporationInventor: Takashi Gotoh
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Publication number: 20150008629Abstract: 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: ApplicationFiled: November 7, 2012Publication date: January 8, 2015Applicant: CHO HATSUJO KABUSHIKI KAISHAInventors: Madoka Kuno, Takashi Gotoh, Shoji Ichikawa, Kazuyoshi Nono, Toshinori Imai
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Patent number: 8779748Abstract: 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: GrantFiled: January 12, 2012Date of Patent: July 15, 2014Assignee: Ricoh Company, Ltd.Inventor: Takashi Gotoh
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Publication number: 20130249121Abstract: 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: ApplicationFiled: March 13, 2013Publication date: September 26, 2013Applicant: KEIHIN CORPORATIONInventors: Takashi Gotoh, Yasushi Ono
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Publication number: 20130049502Abstract: 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: ApplicationFiled: August 20, 2010Publication date: February 28, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Takashi Gotoh
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Publication number: 20130038313Abstract: 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: ApplicationFiled: March 14, 2011Publication date: February 14, 2013Inventor: Takashi Gotoh
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Publication number: 20120263642Abstract: 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: ApplicationFiled: September 30, 2010Publication date: October 18, 2012Applicants: DOWA ELECTRONICS MATERIALS CO., LTD., THE UNIVERSITY OF TOKYOInventors: Shin-ichi Ohkoshi, Shunsuke Sakurai, Asuka Namai, Sayaka Umeda, Hiroshi Hachiya, Kazuyuki Matsumoto, Takashi Gotoh
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Publication number: 20120187995Abstract: 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: ApplicationFiled: January 12, 2012Publication date: July 26, 2012Applicant: RICOH COMPANY, LTD.Inventor: Takashi GOTOH
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Patent number: 8207715Abstract: 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: GrantFiled: December 17, 2009Date of Patent: June 26, 2012Assignee: Ricoh Company, Ltd.Inventor: Takashi Gotoh
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Publication number: 20100156382Abstract: 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: ApplicationFiled: December 17, 2009Publication date: June 24, 2010Applicant: RICOH COMPANY, LTD.Inventor: Takashi Gotoh
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Patent number: 7226152Abstract: 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: GrantFiled: January 27, 2004Date of Patent: June 5, 2007Assignee: Sharp Kabushiki KaishaInventors: Masaki Matsushita, Hirokazu Nakamura, Naozumi Ueno, Hisashi Yoshimura, Takashi Gotoh, Hiroshi Ishii
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Patent number: 7156509Abstract: 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: GrantFiled: January 28, 2004Date of Patent: January 2, 2007Assignee: Sharp Kabushiki KaishaInventors: Masaki Matsushita, Hirokazu Nakamura, Naozumi Ueno, Hisashi Yoshimura, Takashi Gotoh, Akio Matsumoto, Hiroshi Ishii
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Patent number: 6890057Abstract: 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: GrantFiled: July 1, 2003Date of Patent: May 10, 2005Assignee: Sharp Kabushiki KaishaInventors: Takashi Gotoh, Hisashi Yoshimura, Naozumi Ueno, Tomomi Tanaka, Masaki Matsushita, Hirokazu Nakamura
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Publication number: 20050001874Abstract: 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: ApplicationFiled: July 1, 2003Publication date: January 6, 2005Inventors: Takashi Gotoh, Hisashi Yoshimura, Naozumi Ueno, Tomomi Tanaka, Masaki Matsushita, Hirokazu Nakamura
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Publication number: 20040218026Abstract: 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: ApplicationFiled: January 28, 2004Publication date: November 4, 2004Inventors: Masaki Matsushita, Hirokazu Nakamura, Naozumi Ueno, Hisashi Yoshimura, Takashi Gotoh, Akio Matsumoto, Hiroshi Ishii