Patents by Inventor Kentaro Yamaguchi

Kentaro Yamaguchi 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: 11232898
    Abstract: A 0.5-displacement region in which a first wire and a second wire are displaced by 0.5 turns from each other, and a 1.5-displacement region in which the first wire and the second wire are displaced by 1.5 turns in an opposite direction to a 0.5-displacement region are distributed along an axis direction on a winding core portion. The sum of the number of turns of the second wire located in the 0.5-displacement region being twice or more and five times or less than the sum of the number of turns of the second wire located in the 1.5-displacement region.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: January 25, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masashi Miyamoto, Shigeto Yamamoto, Kentaro Yamaguchi
  • Patent number: 11232904
    Abstract: A taping reel with a plurality of coil components packed in the tape reel, comprising a tape including a plurality of pockets arranged along a longitudinal direction and each having one of the coil components stored therein, and a reel around which the tape is wound. The coil components each include a core including a winding core part, and a coil wound around the winding core part and including a plurality of wires. The coil includes a twisted wire portion in which the plurality of wires is twisted together. The plurality of coil components includes first coil components having the twisting direction of the twisted wire portion opposite to the twisting direction of the twisted wire portion of other coil components.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: January 25, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Sukegawa, Masashi Miyamoto, Ryota Hashimoto, Kentaro Yamaguchi, Chihiro Yamaguchi
  • Patent number: 11208608
    Abstract: In an aspect, the present invention provides a refrigerating machine oil comprising a poly(meth)acrylate as a base oil, wherein the poly(meth)acrylate comprises a hydrogenated poly(meth)acrylate, a content of a unit having a carbon-carbon double bond present at a terminal in the poly(meth)acrylate is 6% by mole or less relative to total units constituting the poly(meth)acrylate, and a kinematic viscosity at 40° C. of the hydrogenated poly(meth)acrylate is 1 to 1000 mm2/s, the refrigerating machine oil being used with a refrigerant comprising a refrigerant selected from difluoromethane, a mixture of difluoromethane and pentafluoroethane, a mixture of difluoromethane, pentafluoroethane, and 1, 1, 1, 2-tetrafluoroethane, a mixture of pentafluoroethane, 1, 1, 1, 2-tetrafluoroethane, and 1, 1, 1-trifluoroethane, an unsaturated hydrofluorocarbon, a hydrocarbon, and carbon dioxide.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: December 28, 2021
    Assignee: ENEOS CORPORATION
    Inventors: Kentaro Yamaguchi, Akira Tada, Tatsuki Nakajima, Takeshi Okido, Hidetoshi Ogata
  • Publication number: 20210272742
    Abstract: A terminal electrode has a flat surface to which an end portion of a wire is connected, a low surface lower in a thickness direction of the terminal electrode than the flat surface, and a shift surface connects the flat surface and the low surface and increases a height in the thickness direction from the low surface to the flat surface. The wire has a first portion, a second portion and a third portion opposing the flat surface, the shift surface and the low surface, respectively. The first portion has a flattened cross-sectional shape, and the second portion has a semi-flattened cross-sectional shape.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Akio IGARASHI, Kentaro YAMAGUCHI
  • Publication number: 20210265169
    Abstract: An etching method includes: (a) etching a substrate including an etching target film and a mask formed on the etching target film to form a recess that reaches the etching target film; (b) forming a protective film having a thickness corresponding to one molecular layer on a surface of the recess using a first gas; (c) etching the etching target film with plasma generated from a second gas while leaving the protective film on a side wall of the recess; and (d) repeating (b) and (c).
    Type: Application
    Filed: February 19, 2021
    Publication date: August 26, 2021
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Kentaro YAMAGUCHI, Yusuke TAKINO
  • Patent number: 11087918
    Abstract: A 0.5-displacement region in which a first wire and a second wire are displaced by 0.5 turns from each other, and a 1.5-displacement region in which the first wire and the second wire are displaced by 1.5 turns in an opposite direction to a 0.5-displacement region are distributed along an axis direction on a winding core portion. The sum of the number of turns of the second wire located in the 0.5-displacement region being twice or more and five times or less than the sum of the number of turns of the second wire located in the 1.5-displacement region.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: August 10, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masashi Miyamoto, Shigeto Yamamoto, Kentaro Yamaguchi
  • Patent number: 11062838
    Abstract: A terminal electrode has a flat surface to which an end portion of a wire is connected, a low surface lower in a thickness direction of the terminal electrode than the flat surface, and a shift surface connects the flat surface and the low surface and increases a height in the thickness direction from the low surface to the flat surface. The wire has a first portion, a second portion and a third portion opposing the flat surface, the shift surface and the low surface, respectively. The first portion has a flattened cross-sectional shape, and the second portion has a semi-flattened cross-sectional shape.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: July 13, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akio Igarashi, Kentaro Yamaguchi
  • Patent number: 11001779
    Abstract: The present invention, in one aspect, provides a refrigerating machine oil including a lubricating base oil and a compound represented by the following formula (A): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, and R3 and R4 each independently represent a hydrogen atom or an alkyl group, the refrigerating machine oil being used with a refrigerant including an unsaturated hydrofluorocarbon.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: May 11, 2021
    Assignee: ENEOS CORPORATION
    Inventors: Yohei Shono, Kentaro Yamaguchi, Yuya Mizutani, Takeshi Okido, Hidetoshi Ogata
  • Patent number: 10976267
    Abstract: The present invention is a method for analyzing diffraction data obtained using a crystal structure analysis sample, the sample comprising a single crystal of a porous compound, and a compound for which a structure is to be determined. The method comprising: a step (I) that selects a space group that is identical to a space group of the single crystal of the porous compound, or a space group that has a symmetry lower than that, to be a space group of the crystal structure analysis sample; a step (II) that determines an initial structure of the crystal structure analysis sample using diffraction data with respect to a crystal structure of the single crystal of the porous compound as initial values; and a step (III) that refines the initial structure determined.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: April 13, 2021
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Makoto Fujita, Yasuhide Inokuma, Kentaro Yamaguchi
  • Patent number: 10913918
    Abstract: The present invention provides a refrigerating machine oil comprising: a lubricating base oil; and 40 mass % or less of a polymer, based on a total amount of the refrigerating machine oil, the polymer having a structural unit represented by the following formula (I) and a weight average molecular weight of from 500 to 100000. [In formula (I), Ra, Rb and Rc each independently represents a hydrogen atom or a hydrocarbon group, and Rd represents an oxygen-containing organic group or a C1-18 hydrocarbon group.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: February 9, 2021
    Assignee: ENEOS CORPORATION
    Inventors: Hiroko Shimpo, Kentaro Yamaguchi, Hidetoshi Ogata, Takeshi Okido
  • Publication number: 20210020409
    Abstract: A plasma processing method includes: placing a substrate on a substrate support provided in a chamber of a capacitively coupled plasma processing apparatus where the substrate includes a silicon-containing film and a mask provided on the silicon-containing film and having an opening having a longitudinal direction; and supplying an inert gas into the chamber; and selectively performing one of supplying a first radio-frequency power to an upper electrode of the plasma processing apparatus to generate plasma from the inert gas and supplying a second radio-frequency power to a lower electrode of the plasma processing apparatus included in the substrate support, and applying a negative bias voltage to the upper electrode to cause positive ions from the plasma to collide with the upper electrode and release a silicon-containing material from the upper electrode, thereby depositing the silicon-containing material on the substrate.
    Type: Application
    Filed: July 25, 2019
    Publication date: January 21, 2021
    Applicant: Tokyo Electron Limited
    Inventors: Kosuke OGASAWARA, Kentaro YAMAGUCHI, Takanori BANSE
  • Publication number: 20210009884
    Abstract: One aspect of the present invention is a refrigerating machine including a refrigerant circulation system including a compressor, a condenser, an expansion mechanism, and an evaporator, and the refrigerant circulation system being filled with a refrigerant and a refrigerating machine oil, wherein the refrigerating machine oil contains: a first base oil having a compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 1 to 80% by mass; and a second base oil having a kinematic viscosity at 40° C. lower than the first base oil and having a narrower compatible region with the refrigerant than the first base oil.
    Type: Application
    Filed: April 2, 2019
    Publication date: January 14, 2021
    Applicant: ENEOS Corporation
    Inventors: Kentaro YAMAGUCHI, Yuya MIZUTANI, Satoshi NAGAI, Hidetoshi OGATA
  • Patent number: 10836975
    Abstract: The present invention provides a refrigerating machine oil comprising: a base oil; a compound represented by the following formula (1): wherein R1 and R2 each independently represent a monovalent hydrocarbon group, R3 represents a divalent hydrocarbon group and R4 represents a hydrogen atom or a monovalent hydrocarbon group; and an epoxy compound.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 17, 2020
    Assignee: ENEOS Corporation
    Inventors: Hitoshi Takahashi, Kentaro Yamaguchi, Souichirou Konno, Fumiyuki Nara
  • Publication number: 20200335278
    Abstract: A taping reel with a plurality of coil components packed in the tape reel, comprising a tape including a plurality of pockets arranged along a longitudinal direction and each having one of the coil components stored therein, and a reel around which the tape is wound. The coil components each include a core including a winding core part, and a coil wound around the winding core part and including a plurality of wires. The coil includes a twisted wire portion in which the plurality of wires is twisted together. The plurality of coil components includes first coil components having the twisting direction of the twisted wire portion opposite to the twisting direction of the twisted wire portion of other coil components.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Takashi SUKEGAWA, Masashi MIYAMOTO, Ryota HASHIMOTO, Kentaro YAMAGUCHI, Chihiro YAMAGUCHI
  • Patent number: 10763040
    Abstract: A taping reel with a plurality of coil components packed in the tape reel, comprising a tape including a plurality of pockets arranged along a longitudinal direction and each having one of the coil components stored therein, and a reel around which the tape is wound. The coil components each include a core including a winding core part, and a coil wound around the winding core part and including a plurality of wires. The coil includes a twisted wire portion in which the plurality of wires is twisted together. The plurality of coil components includes first coil components having the twisting direction of the twisted wire portion opposite to the twisting direction of the twisted wire portion of other coil components.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: September 1, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Sukegawa, Masashi Miyamoto, Ryota Hashimoto, Kentaro Yamaguchi, Chihiro Yamaguchi
  • Publication number: 20200227979
    Abstract: A rotary electric machine of the embodiment includes a stator including a cylindrical stator core, and a coil mounted on the stator core, and a rotor disposed radially inward of the stator, wherein the rotor includes a rotor core having a rotor internal flow path through which a refrigerant is able to flow by axial center cooling, and an end surface plate disposed at an end of the rotor core in an axial direction, and the end surface plate includes a refrigerant flow hole configured to communicate with the rotor internal flow path, and a surface treatment portion disposed at least between the refrigerant flow hole and an outer peripheral edge of the end surface plate, and a surface tension of the surface treatment portion is smaller than that of the end surface plate.
    Type: Application
    Filed: January 9, 2020
    Publication date: July 16, 2020
    Inventors: Tadashi Yamaguchi, Toru Kishi, Shigeji Nakano, Motoshi Togasaki, Kentaro Yamaguchi
  • Publication number: 20200199476
    Abstract: In an aspect, the present invention provides a refrigerating machine oil comprising a poly(meth)acrylate as a base oil, wherein the poly(meth)acrylate comprises a hydrogenated poly(meth)acrylate, a content of a unit having a carbon-carbon double bond present at a terminal in the poly(meth)acrylate is 6% by mole or less relative to total units constituting the poly(meth)acrylate, and a kinematic viscosity at 40° C. of the hydrogenated poly(meth)acrylate is 1 to 1000 mm2/s, the refrigerating machine oil being used with a refrigerant comprising a refrigerant selected from difluoromethane, a mixture of difluoromethane and pentafluoroethane, a mixture of difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane, a mixture of pentafluoroethane, 1,1,1,2-tetrafluoroethane, and 1,1,1-trifluoroethane, an unsaturated hydrofluorocarbon, a hydrocarbon, and carbon dioxide.
    Type: Application
    Filed: October 20, 2017
    Publication date: June 25, 2020
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Kentaro YAMAGUCHI, Akira TADA, Tatsuki NAKAJIMA, Takeshi OKIDO, Hidetoshi OGATA
  • Publication number: 20200088722
    Abstract: Disclosed are a PIVKA-II measurement method that achieves better serum-plasma correlation than conventional methods, and a reagent and a kit therefor. The PIVKA-II measurement method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using a mixture of an anti-F1 antibody that specifically binds to prothrombin fragment F1 or an antigen-binding fragment thereof and an anti-F2 antibody that specifically binds to prothrombin fragment F2 or an antigen-binding fragment thereof; and an anti-PIVKA-II antibody that specifically binds to PIVKA-II or an antigen-binding fragment thereof.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 19, 2020
    Applicants: FUJIREBIO INC., SEKISUI MEDICAL CO., LTD.
    Inventors: Kentaro YAMAGUCHI, Katsumi AOYAGI, Azusa TERAO
  • Publication number: 20200035433
    Abstract: An electromagnetic relay has a contact device and an electromagnet device. An electromagnetic relay has stators which are a pair of rod-like members, and a mover. The mover may face the side of the stator. A housing supports the stator and accommodates the mover. A yoke is fixed to the housing so as to face the movable facing surface and contains a soft magnetic material.
    Type: Application
    Filed: May 31, 2019
    Publication date: January 30, 2020
    Applicants: DENSO CORPORATION, ANDEN CO., LTD.
    Inventors: Yoshitaka NISHIGUCHI, Takahiro SOKI, Masanao SUGISAWA, Kentaro YAMAGUCHI
  • Patent number: 10539559
    Abstract: Disclosed are a PIVKA-II measurement method that achieves better serum-plasma correlation than conventional methods, and a reagent and a kit therefor. The PIVKA-II measurement method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using a mixture of an anti-F1 antibody that specifically binds to prothrombin fragment F1 or an antigen-binding fragment thereof and an anti-F2 antibody that specifically binds to prothrombin fragment F2 or an antigen-binding fragment thereof; and an anti-PIVKA-II antibody that specifically binds to PIVKA-II or an antigen-binding fragment thereof.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: January 21, 2020
    Assignees: FUJIREBIO INC., SEKISUI MEDICAL CO., LTD.
    Inventors: Kentaro Yamaguchi, Katsumi Aoyagi, Azusa Terao