Patents by Inventor Koji Yokoyama

Koji Yokoyama 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: 11121596
    Abstract: A stator of a brushless motor includes a stator core and a plurality of coils. The stator core includes a base portion having an annular plate shape and a plurality of teeth protruding from one surface of the base portion in an axial direction and disposed in a circumferential direction. The plurality of coils is respectively wound by concentrated winding along peripheral surfaces of the plurality of teeth. The base portion includes an inner circumferential edge that is recessed radially outward from an inner end of each of the plurality of teeth or the base portion includes an outer circumferential edge that is recessed radially inward from an outer end of each of the plurality of teeth.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: September 14, 2021
    Assignee: DENSO CORPORATION
    Inventors: Akihisa Hattori, Yoji Yamada, Koji Mikami, Seiya Yokoyama
  • Patent number: 11114909
    Abstract: A motor includes a stator having a winding, and a rotor. The rotor rotates by receiving a rotational magnetic field generated by drive current supplied to the winding. The winding includes a first winding and a second winding, the first and second windings both being excited at the same timing by the drive current. The first winding and the second winding are connected in series. The rotor includes a first pole section and a second pole section. The second pole section faces the second winding at the rotation position of the rotor at which the first pole section faces the first winding. The magnetic force exerted on the stator by the second pole section is weaker than that exerted by the first pole section.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: September 7, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yoji Yamada, Koji Mikami, Akihisa Hattori, Seiya Yokoyama
  • Patent number: 11106050
    Abstract: To provide an information processing apparatus, an information processing method, and a program for restraining a burden on a user who observes a three-dimensional image. Therefore, a display control unit performs display control to cause a three-dimensional image to be displayed so that a first plane surface parallel to a horizontal plane in a real space is observed in an area based on a distance between a lower end and an upper end of a display surface on which a display unit displays the three-dimensional image and an angle between the horizontal plane and the display surface.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: August 31, 2021
    Assignee: SONY CORPORATION
    Inventors: Kazuki Yokoyama, Koji Aoyama, Tomoya Yano
  • Publication number: 20190322531
    Abstract: Disclosed is a carbon material, such as a carbon nanotube, into which a boron atom and/or a phosphorus atom is/are introduced while maintaining its characteristic structures and functions and a method for producing the same. The carbon material of the present invention is one in which a boron atom and/or a phosphorus atom is/are introduced into part of carbon atoms composing the carbon material, and can be produced by a method for producing a carbon material including the steps of: bringing a carbon material into contact with a fluorination treatment gas containing a fluorine-containing gas, thereby subjecting a surface of the carbon material to fluorination treatment; and bringing the carbon material after the fluorination treatment into contact with a boronization treatment gas containing a boron-containing gas, thereby subjecting to boronization treatment and/or into contact with a phosphorization treatment gas containing a phosphorus-containing gas, thereby subjecting to phosphorization treatment.
    Type: Application
    Filed: June 9, 2017
    Publication date: October 24, 2019
    Inventors: Kazuyuki TOHJI, Yoshinori SATO, Koji YOKOYAMA, Kazutaka HIRANO, Yoshinori SATO
  • Patent number: 10314301
    Abstract: The present invention relates to a method of preserving cells in a cell preservative solution. The cell preservative solution comprises a lower alcohol having 1 to 6 carbon atoms and a divalent metal ion in an aqueous solvent, wherein the concentration of the divalent metal ion is from about 6 mmol/L to about 82 mmol/L.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: June 11, 2019
    Assignee: SYSMEX CORPORATION
    Inventors: Koji Yokoyama, Noriko Oka, Masakatsu Morita, Yuka Yamamoto
  • Patent number: 10151696
    Abstract: Disclosed is a method for determining abnormality in a particle analyzer. The method includes: staining first control particles but not staining second control particles which emit fluorescence; irradiating with light the first control particles and the second control particles flowing in a flow cell, and detecting fluorescence from the first control particles and the second control particles; obtaining a first management value indicating a detection result of the fluorescence emitted from the first control particles and a second management value indicating a detection result of the fluorescence emitted from the second control particles; and determining abnormality in the staining step, based on a value calculated from the first management value and the second management value or a ratio between the first management value and the second management value.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: December 11, 2018
    Assignee: SYSMEX CORPORATION
    Inventors: Koji Yokoyama, Hiromi Morisaki
  • Patent number: 10046971
    Abstract: A nitrogen-containing carbon material to the present invention comprises a carbon material having a carbon skeleton formed of carbon atoms and nitrogen atoms introduced into the carbon material, wherein part of carbon atoms in the carbon skeleton are substituted with nitrogen atoms. The nitrogen-containing carbon material according to the present invention can be produced by a production method including the steps of bringing the carbon material into contact with a first treatment gas containing a fluorine-containing gas to subject a surface of the carbon material to a fluorination treatment; and bringing the carbon material after being subjected to the fluorination treatment into contact with a second treatment gas containing a nitrogen-containing gas with heating to perform a nitriding treatment.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: August 14, 2018
    Assignees: Stella Chemifa Corporation, Tohoku University
    Inventors: Kazuyuki Tohji, Yoshinori Sato, Koji Yokoyama, Kazutaka Hirano, Yoshinori Sato
  • Patent number: 9921212
    Abstract: A method of screening for a therapeutic and/or preventive drug for cartilaginous hyperplasia and a therapeutic and/or preventive drug for cartilaginous hyperplasia are provided. The following are provided: a method of screening for a therapeutic and/or preventive drug for cartilaginous hyperplasia, comprising a step of culturing chondroprogenitor cells under conditions in which the cells are brought into contact with a test substance and conditions in which the cells are not brought into contact with the test substance and a step of determining the SOX9 promoter activity, cAMP level, or degree of phosphorylation of CREB in the cells or the extracellular matrix volume in a culture; and a therapeutic and/or preventive drug for cartilaginous hyperplasia, comprising as an active ingredient an adenylate cyclase inhibitor.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: March 20, 2018
    Assignee: Kyoto University
    Inventors: Junya Toguchida, Ryuta Nishikomori, Koji Yokoyama, Makoto Ikeya, Toshio Heike
  • Publication number: 20170318801
    Abstract: The present invention relates to a method of preserving cells in a cell preservative solution. The cell preservative solution comprises a lower alcohol having 1 to 6 carbon atoms and a divalent metal ion in an aqueous solvent, wherein the concentration of the divalent metal ion is from about 6 mmol/L to about 82 mmol/L.
    Type: Application
    Filed: July 14, 2017
    Publication date: November 9, 2017
    Applicant: SYSMEX CORPORATION
    Inventors: Koji YOKOYAMA, Noriko OKA, Masakatsu MORITA, Yuka YAMAMOTO
  • Patent number: 9799474
    Abstract: A contactor includes a pair of fixed contacts, a movable contact element configured to contact the pair of fixed contacts and to be separated from the pair of fixed contacts, a movable shaft configured to move in an axial direction as to cause the movable contact element to contact the pair of fixed contacts and to be separated from the pair of fixed contacts, and a partition-wall component disposed opposite to the pair of fixed contacts with respect to the movable contact element. The first partition-wall component includes a partition wall provided around the movable shaft. The first partition wall is configured to move synchronously with at least one of the movable contact element and the movable shaft.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 24, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Satoshi Sakai, Koji Yokoyama
  • Patent number: 9679707
    Abstract: A contact device includes a pair of fixed contacts, a movable contactor, a contactor holder, a movable shaft, and a base. The pair of fixed contacts are aligned in a first direction. The movable contactor comes into or out of contact with the pair of fixed contacts in a second direction orthogonal to the first direction. The contactor holder holds the movable contactor. The movable shaft moves the contactor holder in the second direction so that the movable contactor comes into or out of contact with the fixed contacts. The base accommodates the fixed contacts, the movable contactor, and the contactor holder. The base has a projection projecting from a position opposing the contactor holder in a third direction orthogonal to both the first and second directions.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: June 13, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Yokoyama, Satoshi Sakai
  • Publication number: 20160300676
    Abstract: A contactor includes a pair of fixed contacts, a movable contact element configured to contact the pair of fixed contacts and to be separated from the pair of fixed contacts, a movable shaft configured to move in an axial direction as to cause the movable contact element to contact the pair of fixed contacts and to be separated from the pair of fixed contacts, and a partition-wall component disposed opposite to the pair of fixed contacts with respect to the movable contact element. The first partition-wall component includes a partition wall provided around the movable shaft. The first partition wall is configured to move synchronously with at least one of the movable contact element and the movable shaft.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 13, 2016
    Inventors: SATOSHI SAKAI, KOJI YOKOYAMA
  • Publication number: 20160300680
    Abstract: A contact device includes a pair of fixed contacts, a movable contactor, a contactor holder, a movable shaft, and a base. The pair of fixed contacts are aligned in a first direction. The movable contactor comes into or out of contact with the pair of fixed contacts in a second direction orthogonal to the first direction. The contactor holder holds the movable contactor. The movable shaft moves the contactor holder in the second direction so that the movable contactor comes into or out of contact with the fixed contacts. The base accommodates the fixed contacts, the movable contactor, and the contactor holder. The base has a projection projecting from a position opposing the contactor holder in a third direction orthogonal to both the first and second directions.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 13, 2016
    Inventors: KOJI YOKOYAMA, SATOSHI SAKAI
  • Publication number: 20160227110
    Abstract: An imaging apparatus whose posture is easily adjustable is provided. The imaging apparatus is configured to include an inclination detector detecting a degree of inclination of one of the imaging apparatus and an image captured by the imaging apparatus relative to a horizontal direction orthogonal to a direction of gravity; a display unit; a first inclination indicator unit allowing the display unit to display an indicator to indicate the degree of inclination according to a detection result from the inclination detector; a second inclination indicator unit notifying via sound according to a detection result from the inclination detector that the degree of inclination is over a predetermined value; and a selector unit allowing at least one of the first and second inclination indicator units to operate.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: Junichi Shinohara, Koji Yokoyama, Mayu Takano, Hiroshi Morohoshi
  • Publication number: 20160177406
    Abstract: A method of screening for a therapeutic and/or preventive drug for cartilaginous hyperplasia and a therapeutic and/or preventive drug for cartilaginous hyperplasia are provided. The following are provided: a method of screening for a therapeutic and/or preventive drug for cartilaginous hyperplasia, comprising a step of culturing chondroprogenitor cells under conditions in which the cells are brought into contact with a test substance and conditions in which the cells are not brought into contact with the test substance and a step of determining the SOX9 promoter activity, cAMP level, or degree of phosphorylation of CREB in the cells or the extracellular matrix volume in a culture; and a therapeutic and/or preventive drug for cartilaginous hyperplasia, comprising as an active ingredient an adenylate cyclase inhibitor.
    Type: Application
    Filed: October 9, 2015
    Publication date: June 23, 2016
    Applicant: KYOTO UNIVERSITY
    Inventors: Junya Toguchida, Ryuta Nishikomori, Koji Yokoyama, Makoto Ikeya, Toshio Heike
  • Publication number: 20160167968
    Abstract: A nitrogen-containing carbon material to the present invention comprises a carbon material having a carbon skeleton formed of carbon atoms and nitrogen atoms introduced into the carbon material, wherein part of carbon atoms in the carbon skeleton are substituted with nitrogen atoms. The nitrogen-containing carbon material according to the present invention can be produced by a production method including the steps of bringing the carbon material into contact with a first treatment gas containing a fluorine-containing gas to subject a surface of the carbon material to a fluorination treatment; and bringing the carbon material after being subjected to the fluorination treatment into contact with a second treatment gas containing a nitrogen-containing gas with heating to perform a nitriding treatment.
    Type: Application
    Filed: December 16, 2015
    Publication date: June 16, 2016
    Inventors: Kazuyuki Tohji, Yoshinori Sato, Koji Yokoyama, Kazutaka Hirano, Yoshinori Sato
  • Patent number: 9339448
    Abstract: Provided is an emulsion composition comprising the following ingredients (A), (B), (C), (D), (E), and (F): (A) glyceryl monofatty acid ester derived from a linear-chain fatty acid having 10 to 24 carbon atoms; (B) a higher alcohol having 10 to 24 carbon atoms; (C) a ceramide; (D) an anionic surfactant; (E) a polar oil selected from branched fatty acid esters having an IOB of from 0.2 to 0.85 and having a hydroxyl group or an amino group; and (F) water, wherein the mass ratio of the total content of ingredients (A), (B), and (C) and ingredient (D) in terms of acid to the content of ingredient (E), ((A)+(B)+(C)+(D))/(E), is from 1.2 to 25.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 17, 2016
    Assignee: Kao Corporation
    Inventors: Kazuhiro Kaizu, Koji Yokoyama
  • Patent number: 9338360
    Abstract: An imaging apparatus whose posture is easily adjustable is provided. The imaging apparatus is configured to include an inclination detector detecting a degree of inclination of one of the imaging apparatus and an image captured by the imaging apparatus relative to a horizontal direction orthogonal to a direction of gravity; a display unit; a first inclination indicator unit allowing the display unit to display an indicator to indicate the degree of inclination according to a detection result from the inclination detector; a second inclination indicator unit notifying via sound according to a detection result from the inclination detector that the degree of inclination is over a predetermined value; and a selector unit allowing at least one of the first and second inclination indicator units to operate.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 10, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Junichi Shinohara, Koji Yokoyama, Mayu Takano, Hiroshi Morohoshi
  • Publication number: 20160091428
    Abstract: Disclosed is a method for determining abnormality in a particle analyzer. The method includes: staining first control particles but not staining second control particles which emit fluorescence; irradiating with light the first control particles and the second control particles flowing in a flow cell, and detecting fluorescence from the first control particles and the second control particles; obtaining a first management value indicating a detection result of the fluorescence emitted from the first control particles and a second management value indicating a detection result of the fluorescence emitted from the second control particles; and determining abnormality in the staining step, based on a value calculated from the first management value and the second management value or a ratio between the first management value and the second management value.
    Type: Application
    Filed: September 29, 2015
    Publication date: March 31, 2016
    Inventors: Koji YOKOYAMA, Hiromi MORISAKI
  • Publication number: 20140295450
    Abstract: The present invention provides a method for analyzing a cell. The method comprises steps of: regulating a temperature of a medium to a predetermined degree, wherein the cell is preserved in the medium; and obtaining an optical information by irradiating light on the cell.
    Type: Application
    Filed: March 24, 2014
    Publication date: October 2, 2014
    Applicant: SYSMEX CORPORATION
    Inventors: Masakatsu MORITA, Masahiko OGURO, Koji YOKOYAMA, Yuka YAMAMOTO