Patents by Inventor Koji Yamamoto

Koji Yamamoto 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: 10022389
    Abstract: New drugs useful in the prevention or treatment of constipation are provided, in which SGLT1 inhibiting compounds, in particular, a 4-isopropylphenyl glucitol compound represented by the following formula (I), or pharmaceutically acceptable salts thereof are contained as an active ingredient:
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: July 17, 2018
    Assignee: TAISHO PHARMACEUTICAL CO., LTD.
    Inventors: Daisuke Yamamoto, Fusayo Io, Koji Yamamoto
  • Patent number: 10024295
    Abstract: An ignition timing control device has a knocking detection unit and an ignition timing adjustment unit. In a condition that the operation state of the internal combustion engine is suitable for adjustment of the ignition timing, the ignition timing control device outputs to an igniter an adjusted ignition signal as adjusted (corrected) by an adjusted ignition timing determination process. The ignition timing control device outputs to the igniter a reference ignition signal as it is outputted from an internal combustion engine control unit without adjustment (correction) in a condition that the operation state of the internal combustion engine is not suitable for adjustment of the ignition timing.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 17, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Isao Suzuki, Koji Yamamoto
  • Publication number: 20180197893
    Abstract: To make the dimension of an electrostatic protection circuit small with the same maintained high in sensitivity. The electrostatic protection circuit is of the configuration that a first diode and a second diode are connected in series, wherein a semiconductor layer owned by each diode is configured to be sandwiched between a gate electrode and a conductive light shielding film. The light shielding film is formed to overlap with the semiconductor layer and has a wider area than the semiconductor layer. This results in having a gate covering the semiconductor layer from an upper side and a back gate covering the semiconductor layer from a lower side, so that the sensitivity can be maintained high irrespective of decreasing the electrostatic protection circuit in dimension.
    Type: Application
    Filed: March 6, 2018
    Publication date: July 12, 2018
    Inventors: Koji YAMAMOTO, Tatsuya ISHII
  • Publication number: 20180164723
    Abstract: A fuser includes a pressure pad forming a nip with a fuser belt between the pad and a fuser rotator. A pressure face in contact with the belt has profiles in planes normal to the axis of the rotator. The profiles each include a reference section, the first to come into contact with the rotator with the belt in between when the pad forms the nip, and a boundary section at a threshold distance from the reference section in the width direction of the nip. When the pad is apart from the nip due to removal of a force applied by a pusher unit, the boundary section is, relative to the reference section, more largely displaced in the opposite direction to that of the rotator in one of the profiles located at a larger distance from a center portion of the pad in the axial direction of the rotator.
    Type: Application
    Filed: December 11, 2017
    Publication date: June 14, 2018
    Applicant: Konica Minolta, Inc.
    Inventors: Koji YAMAMOTO, Shoichi YOSHIKAWA, Masahiro YAMAGUCHI, Seiji SHIBATA
  • Patent number: 9964900
    Abstract: A fixing device includes: a heating rotator and a pressure rotator configured to be pressed against and separated from each other, the rotators being rotated while being pressed against each other to thermally fix a toner image formed on a recording medium at a nip portion between the rotators; and a separating member configured to separate the recording medium to which the toner image is thermally fixed, the separating member being enabled to be brought close to and be separated from the nip portion between the rotators, wherein when the rotators in a pressure contact state are separated from each other, the rotators are separated after the separating member is moved away from the nip portion, and when the rotators in a separated state are pressed against each other, the separating member is brought close to the nip portion after the rotators are pressed against each other.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: May 8, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Koji Yamamoto, Mamoru Fukaya
  • Patent number: 9941306
    Abstract: To make the dimension of an electrostatic protection circuit small with the same maintained high in sensitivity. The electrostatic protection circuit is of the configuration that a first diode and a second diode are connected in series, wherein a semiconductor layer owned by each diode is configured to be sandwiched between a gate electrode and a conductive light shielding film. The light shielding film is formed to overlap with the semiconductor layer and has a wider area than the semiconductor layer. This results in having a gate covering the semiconductor layer from an upper side and a back gate covering the semiconductor layer from a lower side, so that the sensitivity can be maintained high irrespective of decreasing the electrostatic protection circuit in dimension.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: April 10, 2018
    Assignee: Japan Display Inc.
    Inventors: Koji Yamamoto, Tatsuya Ishii
  • Patent number: 9942844
    Abstract: To save power consumed due to reception of frames destined to other communication devices and enable power saving by prolonging a sleep state. A communication device is provided including a communication unit which communicates with a base station, a switching unit which switches an operation mode of the communication unit from a normal mode for communicating with the base station to a power saving mode for uncommunicating with the base station, when the communication unit receives data from the base station in a state in which the communication unit does not transmit a data transmission request to the base station, and a determination unit which determines a duration time of the power saving mode, based on a data length of the data received.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: April 10, 2018
    Assignees: Kyoto University, Allied Telesis Hildings K.K.
    Inventors: Masahiro Morikura, Koji Yamamoto, Takayuki Nishio, Tomoyuki Sugihara
  • Publication number: 20180097502
    Abstract: An elastic wave device includes a lamination layer film including a piezoelectric thin film on a support substrate. The lamination layer film is not partially present in a region located in an outer side portion of a region where IDT electrodes are provided. A first insulation layer extends from at least a portion of a region where the lamination layer film is not present to an upper portion of the piezoelectric thin film. A wiring electrode extends from the upper portion of the piezoelectric thin film to an upper portion of the first insulation layer, and extends onto a section of the first insulation layer in the region.
    Type: Application
    Filed: December 5, 2017
    Publication date: April 5, 2018
    Inventors: Koji Yamamoto, Tsutomu Takai, Seiji Kai, Hisashi Yamazaki, Yuji Miwa, Takashi Yamane
  • Publication number: 20180067432
    Abstract: An image forming apparatus includes a fixing device that forms a fixing nip by a pressure rotator and a fixing belt that rotates while contacting the pressure rotator, and includes: a nip former that is disposed inside the fixing belt and that forms the fixing nip between the pressure rotator and the fixing belt; and a lubricant supplier that forms a lubricant-retaining space at a position between an inner surface of the fixing belt and the nip former on an upstream side of the nip former in a rotation direction of the fixing belt, wherein the lubricant supplier varies a volume of the lubricant-retaining space.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 8, 2018
    Applicant: Konica Minolta, Inc.
    Inventors: Masahiro YAMAGUCHI, Shoichi YOSHIKAWA, Koji YAMAMOTO, Seiji SHIBATA
  • Publication number: 20180062499
    Abstract: A control circuit for a semiconductor switching element includes a control terminal, a main electrode terminal, and a current sensing terminal, and controls the semiconductor switching element including a diode connected to the main electrode terminal or the current sensing terminal. The control circuit includes an overheat detection circuit, a current detection circuit, and an interruption circuit. The overheat detection circuit outputs an overheat detection signal when a temperature detected based on an output of the diode is equal to or higher than a predetermined set temperature. The current detection circuit outputs a current detection signal when an output value of the current sensing terminal is equal to or greater than a predetermined set current value. The interruption circuit turns off the semiconductor switching element when both the overheat detection signal from the overheat detection circuit and the current detection signal from the current detection circuit are input.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 1, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Koji YAMAMOTO, Atsunobu KAWAMOTO, Shinsuke GODO
  • Publication number: 20180023704
    Abstract: Provided is a hydraulic cylinder using oil pressure, etc., the hydraulic cylinder being configured so that the thickness of a head cover, etc. is reduced so that the hydraulic cylinder is lighter and has a small overall length. A head cover (3) which constitutes an end of a cylinder (1) and a cylinder tube (2) which constitutes the cylindrical portion of the cylinder (1) are welded together by a laser beam applied from the outside radially of the cylinder tube (2) toward the inside radially of the cylinder tube (2).
    Type: Application
    Filed: February 10, 2016
    Publication date: January 25, 2018
    Applicant: TADANO LTD.
    Inventors: Koji YAMAMOTO, Hiroki MIZOBUCHI
  • Patent number: 9869289
    Abstract: The present invention provides an ignition timing control device and ignition timing control system for an internal combustion engine, capable of controlling an ignition timing of the engine promptly in response to a change in engine operating conditions. An ignition timing adjustment unit (43) is adapted to correct the ignition timing to a proper ignition timing in a retard region with reference to a maximum advance value based on a knocking signal outputted from a knocking detection unit (41) and a reference ignition signal (A) outputted from an external electronic control unit (37). The output signal from the ignition timing adjustment unit (43) can be thus promptly adjusted by retarding the ignition timing relative to a reference ignition timing given from the external electronic control unit (37) upon detection of engine knocking.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: January 16, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Isao Suzuki, Koji Yamamoto, Hiroshi Inagaki
  • Patent number: 9859238
    Abstract: An object of the present invention is to provide a semiconductor device capable of eliminating unevenness of current distribution in a plane. A semiconductor device according to the present invention is a semiconductor device including a transistor cell region where a plurality of transistor cells is arranged on a semiconductor substrate, the semiconductor device including an electrode pad which is arranged avoiding the transistor cell region on the semiconductor substrate and is electrically connected to a one-side current electrode of each of the cells, in which the transistor cell region contains a plurality of regions each of which has a different current drive capability from each other depending on a distance from the electrode pad.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: January 2, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinsuke Godo, Atsunobu Kawamoto, Koji Yamamoto
  • Patent number: 9846428
    Abstract: A controller has a varying speed signal generation unit generating a varying speed command signal varying at predetermined amplitude and period, a current control unit generating a current command signal based on the varying speed command signal, a feedback control unit generating a correction signal based on a deviation between the varying speed command signal and a present rotational speed of the spindle motor and adding the correction signal to the current command signal, and a learning control unit calculating a disturbance component caused by cutting resistance based on the deviation every predetermined rotation angle of the spindle motor and, in synchronism with a rotation angle of the spindle motor corresponding to the varying speed command signal input into the current control unit, generating a compensation signal based on the disturbance component corresponding to the rotation angle and adding the compensation signal to the varying speed command signal.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: December 19, 2017
    Assignees: The University of Tokyo, DMG MORI SEIKI CO., LTD.
    Inventors: Hiroshi Fujimoto, Teruaki Ishibashi, Shinji Ishii, Koji Yamamoto, Yuki Terada
  • Publication number: 20170349157
    Abstract: When an output limitation value of a battery is equal to or less than a threshold, an electronic control unit determines that basic torque is able to be output from a second motor to a drive shaft. Then, the electronic control unit sets a predetermined value as a target motoring rotation speed for ending motoring of an engine by a first motor. When the output limitation value is greater than the threshold, the electronic control unit determines that the basic torque is unable to be output from the second motor to the drive shaft at the time of starting the engine, and sets a value smaller than the predetermined value as the target motoring rotation speed.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 7, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, FUJITSU TEN LIMITED
    Inventors: Koji HOKOI, Koji YOSHIHARA, Kotaro INAOKA, Koji YAMAMOTO
  • Patent number: 9829430
    Abstract: A spectrophotometer includes: a sample-chamber lid capable of opening and closing an opening portion of a sample chamber for setting a sample and a reference sample; and sample-chamber lid opening-closing detecting means for detecting an opening-closing state of the sample-chamber lid, and the spectrophotometer is capable of controlling a measurement of a xenon flash tube as a light source, a spectroscope, a detector, an amplifier, an AD converter, a processor, a storage device, and a data display part. In the spectrophotometer, the light source is turned on after a state of the lid changing from an opening state to a closing state is detected in a sample-setting instruction state by the sample-chamber lid opening-closing detecting means; absorbancy, transmissivity, reflectivity, a sample-side energy value, or a reference-side energy value is measured; and a measurement result is displayed on the data display part.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: November 28, 2017
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Takayuki Wakui, Hayato Tobe, Koichi Nakamura, Koji Yamamoto
  • Patent number: 9817291
    Abstract: According to one embodiment, provide is a liquid crystal display device that suppresses potential change of a common electrode caused by potential change of a signal line. An electrode part is provided on an array substrate so as to surround a display region. A signal line is provided on the array substrate so as to be located in the display region. A passivation film is provided on the array substrate so as to cover at least the signal line and the electrode part. A one-side opening part is provided continuously along an edge part of the display region on the passivation film so that the electrode part is disposed. The common electrode is provided on the array substrate so that a part of the common electrode is located at the one-side opening part and another part of the common electrode is located facing the signal line on the passivation film.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: November 14, 2017
    Assignee: Japan Display Inc.
    Inventors: Koji Yamamoto, Akihiko Saitoh, Seiichi Sato, Nobuko Fukuoka
  • Patent number: 9790271
    Abstract: Methods for increasing immunoglobulin A (IgA) levels in a subject having a deficiency thereof are provided herein by administering to the subject an agent that inhibits CXCL13 activity, such as an anti-CXCL13 or an anti-CXCR5 antibody. Further provided are methods for treating an inflammatory disorder in a subject deficient for IgA by administering to the subject an agent that inhibits CXCL13 activity.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: October 17, 2017
    Assignee: Vaccinex, Inc.
    Inventors: Maurice Zauderer, Masaru Yoshida, Koji Yamamoto, Ernest S. Smith
  • Patent number: 9794893
    Abstract: There is provided a wireless communication control device and a wireless communication control method, which control the transmission power of radio waves of base stations appropriately to reduce interference between cells. The wireless communication control method according to the present invention is a method of controlling plural base stations in a wireless communication system in which the plural base stations cover a target area with radio waves of a first radio wave strength or more, the method causing a computer to execute: a step of acquiring a relative positional relationship of the plural base stations; a step of identifying a base station, located in the neighborhood of the boundary of the target area, from the relative positional relationship of the plural base stations; and a step of lowering the transmission power of radio waves of a base station other than the identified base station among the plural base stations.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: October 17, 2017
    Assignee: ALLIED TELESIS HOLDINGS K.K.
    Inventors: Koji Yamamoto, Takayuki Nishio, Masahiro Morikura, Tomoyuki Sugihara
  • Publication number: 20170277086
    Abstract: A fixing device is configured to fix a toner image to a sheet by heat and includes: a heating rotator; a pressurizing roller contacting with the heating rotator; a heater configured to heat the heating rotator such that the heat is transferred to the sheet passing through a contact portion between the heating rotator and the pressurizing roller; a plurality of separation claws configured to separate the sheet from the heating rotator such that the sheet passing through the contact portion is not caught in the heating rotator, the separation claws being provided opposite to the heating rotator; and an adjustor configured to adjust positions of the separation claws relative to the heating rotator such that distances between the separation claws and the heating rotator are equal to each other.
    Type: Application
    Filed: February 22, 2017
    Publication date: September 28, 2017
    Applicant: KONICA MINOLTA, INC.
    Inventors: Toru HAYASE, Koji YAMAMOTO