Patents by Inventor Masahiro Koyama

Masahiro Koyama 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: 20210090842
    Abstract: A liquid metal ion source (50) includes: a reservoir (10) configured to hold an ion material (M) forming a liquid metal; a needle electrode (20); an extraction electrode (22) configured to cause an ion of the ion material to be emitted from a distal end of the needle electrode; a beam diaphragm (24), which is arranged on a downstream side of the extraction electrode, and is configured to limit a beam diameter of the ion; and a vacuum chamber (30) configured to accommodate and hold the reservoir, the needle electrode, the extraction electrode, and the beam diaphragm in vacuum, wherein the liquid metal ion source further includes an oxidizing gas introducing portion (40), and wherein the oxidizing gas introducing portion communicates to the vacuum chamber, and is configured to introduce an oxidizing gas into a periphery of the needle electrode.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 25, 2021
    Inventors: Yoshihiro KOYAMA, Tatsuya ASAHATA, Masahiro KIYOHARA, Tsunghan YANG
  • Publication number: 20210083305
    Abstract: This battery body unit 10 for a redox flow battery performs charging and discharging by circulating an electrolyte in which active materials are dissolved to a battery cell 3 comprising electrodes 1 containing nanomaterials, an ion exchange membrane 2, and bipolar plates. The battery body unit 10 for the redox flow battery comprises an outer frame body 4, and the following which are installed inside the outer frame body 4: the battery cell 3; inner pipes (internal electrolyte going-way pipe 5, internal electrolyte returning-way pipe 6) that circulate the electrolyte to the battery cell 4; and electrolyte exchange members 7 forming a portion of the path of the inner pipes. The electrolyte exchange member 7 has a connection part 7a that connects to an external electrolyte going-way pipe 12 and a connection part 7b that connects to an external electrolyte returning-way pipe 13.
    Type: Application
    Filed: December 14, 2018
    Publication date: March 18, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Tamami KOYAMA, Masahiro SUZUKI, Tingting ZHOU, Miyuki TOMITA
  • Publication number: 20210079983
    Abstract: An object of the present invention is to provide a chain drive system capable of reducing sliding resistance between a chain and a guide shoe, suppressing an increase, over time, in sliding resistance, and reducing wear on the guide shoe. A chain drive system according to the present invention includes a chain having a plurality of chain plates, a plurality of sprockets on which the chain is wound, and one or more guides each including, integrally or separately, a guide shoe having a chain-running surface, and slidably guiding, in presence of lubricating oil, the chain. At least one of the plurality of chain plates has a lubricant region retaining a solid lubricant.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 18, 2021
    Applicant: TSUBAKIMOTO CHAIN CO.
    Inventor: Masahiro Koyama
  • Publication number: 20210028745
    Abstract: A solar power generation paddle includes a blanket that is stored by being taken up into a roll with using extension masts, and that is extended. Solar battery cells are disposed on one surface of the blanket, and thermoelectric conversion elements are disposed on the other surface of the blanket. A plurality of heat dissipation members are disposed on surfaces of the thermoelectric conversion elements which are opposite to surfaces near the blanket, along an extending direction, to cover the thermoelectric conversion elements.
    Type: Application
    Filed: November 16, 2018
    Publication date: January 28, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazushi SEKINE, Masahiro MIYASHITA, Kazunori TAKAGAKI, Naoko KOYAMA
  • Patent number: 10897809
    Abstract: To achieve heat dissipation of a wiring pattern inexpensively with a simple configuration, a printed circuit board includes an insulating substrate having a plurality of wiring patterns on a main surface thereof, and an electronic component mounted on the main surface and connected to the wiring patterns. Further, the printed circuit board includes a heat-dissipating surface mount component that is a surface mount component. The heat-dissipating surface mount component is joined via a solder to each of the wiring patterns on the main surface to dissipate heat of the wiring pattern.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: January 19, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tsuyoshi Miura, Masahiro Koyama
  • Publication number: 20200406368
    Abstract: A cutting insert has a seating surface, an outer peripheral surface, a top surface, and an attachment hole. The cutting edge includes a curved cutting corner edge portion, a first cutting edge portion, and a second cutting edge portion. The top surface includes a first rake face contiguous to the first cutting edge portion, a second rake face contiguous to the second cutting edge portion, and a third rake face contiguous to the cutting corner edge portion and also contiguous to the first and second rake faces. The third rake face has a first region contiguous to the first rake face and a second region contiguous to the second rake face. The first rake face and the first region each have a rake angle which is a positive angle. The second rake face and the second region each have a rake angle which is a negative angle.
    Type: Application
    Filed: September 13, 2019
    Publication date: December 31, 2020
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., BIG DAISHOWA SEIKI CO., LTD.
    Inventors: Naoki MATSUDA, Hideo MAENO, Chikara KIMURA, Yoshihiro KURODA, Takafumi TAKAMI, Junichi KOYAMA, Masahiro SASANO
  • Publication number: 20200395486
    Abstract: By using a conductive layer including Cu as a long lead wiring, increase in wiring resistance is suppressed. Further, the conductive layer including Cu is provided in such a manner that it does not overlap with the oxide semiconductor layer in which a channel region of a TFT is formed, and is surrounded by insulating layers including silicon nitride, whereby diffusion of Cu can be prevented; thus, a highly reliable semiconductor device can be manufactured. Specifically, a display device which is one embodiment of a semiconductor device can have high display quality and operate stably even when the size or definition thereof is increased.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 17, 2020
    Inventors: Shunpei YAMAZAKI, Jun KOYAMA, Masahiro TAKAHASHI, Hideyuki KISHIDA, Akiharu MIYANAGA, Junpei SUGAO, Hideki UOCHI, Yasuo NAKAMURA
  • Publication number: 20200386297
    Abstract: To provide a versatile and easy-to-produce link plate that can reduce frictional resistance and keep surface pressure low while maintaining a small height of a guide-side end surface, and can secure a tensile strength, and a chain. The guide-side end surface of the link plate is made up of a flat portion formed by a flat surface parallel to a line connecting centers of connection holes at leading and trailing ends, and both end surface portions on both ends in the chain longitudinal direction of the flat portion. The both end surface portions are formed to come closer to the line connecting the centers of the leading-end and trailing-end connection holes as the both end surface portions extend further from the flat portion.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 10, 2020
    Applicant: TSUBAKIMOTO CHAIN CO.
    Inventor: Masahiro Koyama
  • Patent number: 10844408
    Abstract: The present invention provides a novel method for manufacturing fumaric acid having favorable tone of color. A method for manufacturing fumaric acid, comprising the following steps (1) and (2): (1) a step of culturing a microorganism having fumaric acid-producing ability in a liquid culture medium comprising a carbon source to obtain one or more substances selected from fumaric acid and a fumarate, (2) a step of crystallizing the one or more substances selected from fumaric acid and a fumarate obtained in the step (1) in the presence of one or more surfactants selected from a nonionic surfactant and an amphoteric surfactant.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 24, 2020
    Assignee: KAO CORPORATION
    Inventors: Masahiro Noba, Shingo Koyama
  • Publication number: 20200335968
    Abstract: A current interrupting device has a first transistor that is normally off and that switches whether to interrupt a current path, and a controller that controls a gate voltage of the first transistor such that, when no overcurrent flows through the current path, the first transistor is operated in an active region, and when an overcurrent flows through the current path, the first transistor is operated in a saturation region to limit the overcurrent, and then, the current path is interrupted.
    Type: Application
    Filed: March 13, 2020
    Publication date: October 22, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yusuke HAYASHI, Kazuto Takao, Tatsunori Sakano, Kentaro Ikeda, Masahiro Koyama, Hongliang Su
  • Patent number: 10770596
    Abstract: By using a conductive layer including Cu as a long lead wiring, increase in wiring resistance is suppressed. Further, the conductive layer including Cu is provided in such a manner that it does not overlap with the oxide semiconductor layer in which a channel region of a TFT is formed, and is surrounded by insulating layers including silicon nitride, whereby diffusion of Cu can be prevented; thus, a highly reliable semiconductor device can be manufactured. Specifically, a display device which is one embodiment of a semiconductor device can have high display quality and operate stably even when the size or definition thereof is increased.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: September 8, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Masahiro Takahashi, Hideyuki Kishida, Akiharu Miyanaga, Junpei Sugao, Hideki Uochi, Yasuo Nakamura
  • Patent number: 10754589
    Abstract: A terminal device includes an operation part, a touching part, a communication module, and a retrieval module. The retrieval module is configured to retrieve an object displayed on a first apparatus equipped with a touch panel from the first apparatus, in response to the operation part being operated while the object is selected by the touching part.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: August 25, 2020
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Masahiro Yanagi, Sumio Watanabe, Takeshi Wakui, Toshiya Koyama, Tatsuya Oguchi
  • Patent number: 10720914
    Abstract: A semiconductor device has a normally-off transistor which comprises a first source, a first drain, and a first gate, a normally-on transistor which comprises a second source connected electrically to the first drain, a second drain, and a second gate, a gate drive circuit which drives the first gate and the second gate, a first resistor which is connected between an output node of the gate drive circuit and the first gate, a second resistor and a first capacitor which are connected in series between the output node and the second gate, a first rectifier element which comprises a first anode and a first cathode, a second rectifier element which comprises a second anode and a second cathode, a first inductor, a second inductor, and a second capacitor and a third inductor which are connected in series between the first source and the second source.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 21, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Masahiro Koyama, Kentaro Ikeda
  • Publication number: 20200220534
    Abstract: A semiconductor device has a normally-off transistor which comprises a first source, a first drain, and a first gate, a normally-on transistor which comprises a second source connected electrically to the first drain, a second drain, and a second gate, a gate drive circuit which drives the first gate and the second gate, a first resistor which is connected between an output node of the gate drive circuit and the first gate, a second resistor and a first capacitor which are connected in series between the output node and the second gate, a first rectifier element which comprises a first anode and a first cathode, a second rectifier element which comprises a second anode and a second cathode, a first inductor, a second inductor, and a second capacitor and a third inductor which are connected in series between the first source and the second source.
    Type: Application
    Filed: September 6, 2019
    Publication date: July 9, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Masahiro KOYAMA, Kentaro IKEDA
  • Publication number: 20200185170
    Abstract: An operation device includes a scroll wheel, a portion of which projects from an opening of an operation surface. The scroll wheel is configured to be rotated by an operator. The scroll wheel includes a ring member that is formed by a light transmissive member, which is configured to transmit light. The operation device includes: a light source that is configured to generate light for nighttime illumination; a wheel illumination light guide member that is configured to guide the light, which is outputted from the light source, to the scroll wheel; and a metal film that is formed at an inner peripheral surface of the ring member.
    Type: Application
    Filed: February 17, 2020
    Publication date: June 11, 2020
    Inventors: Yukihide OTA, Hiromune WADA, Toshinori AOKI, Takaaki KOYAMA, Masahiro KASAI
  • Patent number: 10649391
    Abstract: An image forming apparatus includes a rotary member, a web, a moving unit, a detecting unit configured to detect a predetermined position, and a control portion. The control portion informs, in a case where an actual moving amount per one winding operation is a first moving amount, the replacement of the web, if a number of sheets of recording materials on which images have been formed after the predetermined position is detected reaches a first number of sheets. The control portion informs, in a case where the actual moving amount per one winding operation is a second moving amount which is greater than the first moving amount, the replacement of the web, if a number of sheets of recording materials on which images have been formed after the predetermined position is detected reaches a second number of sheets which is less than the first number of sheets.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: May 12, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masayuki Tamaki, Shigeaki Takada, Daigo Matsuura, Yasuharu Chiyoda, Masahiro Tsujibayashi, Kengo Koyama
  • Patent number: 10651161
    Abstract: According to one embodiment, a semiconductor device includes a first transistor being normally-off, a second transistor being normally-on, and a first conductive member. The first transistor includes a first gate, a first source, a first drain, and a first semiconductor member. The first semiconductor member is provided between the first gate and the first drain and between the first source and the first drain. The second transistor includes a second gate, a second source, a second drain, and a second semiconductor member. An orientation from the first semiconductor member toward the first drain is the same as an orientation from the second semiconductor member toward the second gate, toward the second source, and toward the second drain. The first conductive member electrically connects the first drain and the second source.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 12, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Koyama, Kentaro Ikeda, Kazuto Takao
  • Publication number: 20200111913
    Abstract: By using a conductive layer including Cu as a long lead wiring, increase in wiring resistance is suppressed. Further, the conductive layer including Cu is provided in such a manner that it does not overlap with the oxide semiconductor layer in which a channel region of a TFT is formed, and is surrounded by insulating layers including silicon nitride, whereby diffusion of Cu can be prevented; thus, a highly reliable semiconductor device can be manufactured. Specifically, a display device which is one embodiment of a semiconductor device can have high display quality and operate stably even when the size or definition thereof is increased.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 9, 2020
    Inventors: Shunpei YAMAZAKI, Jun KOYAMA, Masahiro TAKAHASHI, Hideyuki KISHIDA, Akiharu MIYANAGA, Junpei SUGAO, Hideki UOCHI, Yasuo NAKAMURA
  • Publication number: 20200084874
    Abstract: To achieve heat dissipation of a wiring pattern inexpensively with a simple configuration, a printed circuit board includes an insulating substrate having a plurality of wiring patterns on a main surface thereof, and an electronic component mounted on the main surface and connected to the wiring patterns. Further, the printed circuit board includes a heat-dissipating surface mount component that is a surface mount component. The heat-dissipating surface mount component is joined via a solder to each of the wiring patterns on the main surface to dissipate heat of the wiring pattern.
    Type: Application
    Filed: December 16, 2016
    Publication date: March 12, 2020
    Inventors: Tsuyoshi MIURA, Masahiro KOYAMA
  • Patent number: D877862
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: March 10, 2020
    Assignee: SAGINOMIYA SEISAKUSHO, INC.
    Inventors: Masahiro Murata, Yutaka Koyama, Daiichiro Kemmotsu, Ryo Mitome, Seiichi Nakano