Patents by Inventor Koichi Yoshikawa

Koichi Yoshikawa 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: 10483345
    Abstract: An electronic component embedded substrate includes: a substrate that includes an insulating layer and has a first principal surface and a second principal surface on the opposite side of the first principal surface; and an electronic component that is embedded in the substrate and has a plurality of first terminals provided close to the first principal surface, a plurality of second terminals provided close to the second principal surface, and a capacity part provided between the plurality of first terminals and the plurality of second terminals. The electronic component is configured such that at least a part of the second terminals is embedded in the insulating layer. An insulating member is provided between the neighboring second terminals to be in contact with both of the neighboring second terminals. The insulating member and the insulating layer are formed of materials whose thermal expansion coefficients are different from each other.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: November 19, 2019
    Assignee: TDK CORPORATION
    Inventors: Mitsuhiro Tomikawa, Koichi Tsunoda, Kazuhiro Yoshikawa, Kenichi Yoshida
  • Patent number: 10457065
    Abstract: There is provided a liquid container that comprises an upper wall and a bottom wall; a liquid supply port provided in the bottom wall; a first chamber provided on a +Z direction side that is an upper wall side; a second chamber provided on a ?Z direction side that is a bottom wall side; a partition wall configured to part the first chamber from the second chamber; and a connecting hole configured to connect the first chamber with the second chamber. The second chamber is connected with the liquid supply port. The first chamber is connected with the liquid supply port via the connecting hole and the second chamber. The second chamber includes a return flow path that is turned back along an X direction. A liquid contained in the first chamber is flowed from the connecting hole through the return flow path to the liquid supply port.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: October 29, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Atsushi Kobayashi, Koichi Toba, Yasuhiko Yoshikawa, Ryoichi Tanaka, Tadahiro Mizutani
  • Patent number: 10442736
    Abstract: There is provided a platy Mg-containing zinc oxide sintered compact containing 1 to 10 wt % Mg as a first dopant element and 0.005 wt % or more at least one second dopant element selected from the group consisting of Al, Ga and In, the balance consisting essentially of ZnO and optionally at least one third dopant element selected from the group consisting of Br, Cl, F, Sn, Y, Pr, Ge, B, Sc, Si, Ti, Zr, Hf, Mn, Ta, W, Cu, Ni, Cr, La, Gd, Bi, Ce, Sr and Ba, wherein the (002)-plane or (100)-plane orientation in the plate surface is 60% or more. The Mg-containing zinc oxide sintered compact of the present invention has excellent properties such as high orientation despite solid dissolution of Mg.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: October 15, 2019
    Assignee: NGK Insulators, Ltd.
    Inventors: Sota Okochi, Jun Yoshikawa, Koichi Kondo
  • Publication number: 20190304701
    Abstract: A thin-film capacitor satisfies a relationship of CTE1>CTE2>CTE3 regarding a linear expansion coefficient CTE1 of a base, a linear expansion coefficient CTE2 of a capacitance unit, and a linear expansion coefficient CTE3 of a barrier layer. The inventors have newly found that in a case in which such a relationship is satisfied, when a temperature falls from a deposition temperature, cracking occurring in the capacitance unit of the thin-film capacitor is prevented, and cracking occurring in the barrier layer is also prevented.
    Type: Application
    Filed: March 21, 2019
    Publication date: October 3, 2019
    Applicant: TDK CORPORATION
    Inventors: Daiki ISHII, Kazuhiro YOSHIKAWA, Koichi TSUNODA, Mitsuhiro TOMIKAWA, Junki NAKAMOTO, Kenichi YOSHIDA
  • Publication number: 20190277572
    Abstract: A phase-change cooling apparatus according to an exemplary aspect of the present invention includes an evaporator a condenser; a refrigerant liquid driving means for circulating the refrigerant liquid; a first piping section configured to connect the evaporator and the condenser; a second piping section configured to connect the condenser to the refrigerant liquid driving means; a third piping section configured to connect the refrigerant liquid driving means to the evaporator; a refrigerant pooling means for pooling the refrigerant liquid, the refrigerant pooling means being located in a flow path constituted by the second piping section; and a fourth piping section, with one end of the fourth piping section connected to the first piping section at a first connecting point, and another end of the fourth piping section connected to the refrigerant pooling means at a second connecting point.
    Type: Application
    Filed: September 15, 2017
    Publication date: September 12, 2019
    Applicant: NEC Corporation
    Inventors: Arihiro MATSUNAGA, Minoru YOSHIKAWA, Masaki CHIBA, Hisato SAKUMA, Masanori SATO, Mizuki WADA, Koichi TODOROKI
  • Patent number: 10340088
    Abstract: In a thin-film capacitor, an electrode terminal layer is divided into a plurality of parts by a penetration portion, and includes a frame portion as one divided part. The frame portion is disposed along an outer edge of the electrode terminal layer when viewed from the bottom surface side of the electrode terminal layer, and the frame portion can hinder deformation of the electrode terminal layer stretching or warping in a thickness direction or an in-plane direction, whereby such deformation can be prevented. Accordingly, in the thin-film capacitor, the electrode terminal layer is not likely to be deformed and an improvement in strength thereof is achieved.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 2, 2019
    Assignee: TDK CORPORATION
    Inventors: Koichi Tsunoda, Mitsuhiro Tomikawa, Kazuhiro Yoshikawa, Kenichi Yoshida
  • Publication number: 20180003490
    Abstract: A sensor positioning device includes an inter-sensor distance measurement jig that measures a distance between two sensors, and is a reference when setting the distance between the two sensors to a target distance, and reference-setting jigs of sensor height position, each including a weight and a weight suspension member, a lengthwise direction of which is in a vertical direction when the weight is suspended, and each performing setting of a distance which is a total of a vertical direction dimension of the weight, a length of the weight suspension member, and a distance from an upper end of the weight suspension member to the sensor such that the distance coincides with a target height of the sensor, when the weight is in contact with a reference surface, in a state where the weight is attached to a sensor holding jig by the weight suspension member.
    Type: Application
    Filed: September 14, 2017
    Publication date: January 4, 2018
    Inventors: Yuta TANAKA, Koichi YOSHIKAWA
  • Patent number: 8711256
    Abstract: There is provided an image processing apparatus including an image acquisition unit that obtains color image data composed of wavelength components in a visible light region only, and monochrome image data which does not contain the wavelength components in the visible light region and which is composed of wavelength components in other than visible light region only, a color information extraction unit that extracts color information from the color image data, a luminance information extraction unit that extracts luminance information from the monochrome image data, and a synthesis unit that synthesizes the extracted color information and the extracted luminance information to generate composite image data.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: April 29, 2014
    Assignee: Sony Corporation
    Inventor: Koichi Yoshikawa
  • Patent number: 8634124
    Abstract: Provided is an optical apparatus including a filter (102) that includes a first surface (105) intersecting a rotation axis at a predetermined angle and a second surface (106) orthogonal to the rotation axis and rotates around the rotation axis, a filter (110) that is arranged adjacent to the filter (102), includes a third surface (115) and a fourth surface (116) in a spatial relationship of point-symmetry to the first surface (105) and the second surface (106) about a point on the rotation axis between the filters, and rotates in an opposite direction of the filter (102) around the rotation axis.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: January 21, 2014
    Assignee: Sony Corporation
    Inventor: Koichi Yoshikawa
  • Patent number: 8576302
    Abstract: There is provided an imaging apparatus including an optical elements that disperses an incoming light from a subject into a first light composed of wavelength components in a visible light region only, and a second light which does not contain the first light and which is composed of wavelength components in other than visible light region only, a color image pickup device that receives the first light irradiated from the optical element, and a monochrome image pickup device that receives the second light irradiated from the optical element.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: November 5, 2013
    Assignee: Sony Corporation
    Inventor: Koichi Yoshikawa
  • Patent number: 8548679
    Abstract: An overturn prevention control device for a two-wheel vehicle having a vehicle body, a front wheel, an actuator that steers the front wheel, a rear wheel, and a rear-wheel driving portion, includes an angular velocity sensor and a control unit arranged to output a steering angle command signal for controlling the actuator. The angular velocity sensor includes a detection axis, is mounted on the vehicle body such that the detection axis is downwardly inclined at a predetermined angle relative to a forward direction of the vehicle body, and detects an angular velocity about the detection axis. The angular velocity detected by the angular velocity sensor includes an angular velocity in a lateral direction of inclination and an angular velocity in an azimuthal direction. The zero-set error and offset noise are incorporated into the azimuth angle command. Thus, the two-wheel vehicle can be prevented from overturning.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: October 1, 2013
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Atsuhiko Hirata, Shigeru Tsuji, Tomonari Watanabe, Shigeki Fukunaga, Koichi Yoshikawa, Koji Kawai
  • Publication number: 20130072776
    Abstract: A cerebral local portion cooling probe is composed so that a handheld module includes a Peltier device and a coolant liquid circulating part arranged so as to contact with the Peltier device and wirings, conduits and a heat radiating part are connected to this handheld module. Circulation of coolant liquid and operation of the Peltier device are implemented by means of a control unit, then the tip end of the handheld module is caused to contact with a cerebral local portion to be cooled and a state of the cerebral local portion is monitored in accordance with responses to the cooling. A cerebral function mapping device comprises a mapping module in which a plurality of cooling modules are arranged, each cooling module including a Peltier device and a coolant liquid circulating part in a manner similar to that of the cerebral local portion cooling probe.
    Type: Application
    Filed: March 25, 2011
    Publication date: March 21, 2013
    Applicant: YAMAGUCHI UNIVERSITY
    Inventors: Masami Fujii, Hiroshi Fujioka, Michiyasu Suzuki, Koji Kajiwara, Koichi Yoshikawa, Sadahiro Nomura, Takashi Saito
  • Publication number: 20110298951
    Abstract: There is provided an imaging apparatus including an optical elements that disperses an incoming light from a subject into a first light composed of wavelength components in a visible light region only, and a second light which does not contain the first light and which is composed of wavelength components in other than visible light region only, a color image pickup device that receives the first light irradiated from the optical element, and a monochrome image pickup device that receives the second light irradiated from the optical element.
    Type: Application
    Filed: May 4, 2011
    Publication date: December 8, 2011
    Applicant: Sony Corporation
    Inventor: Koichi YOSHIKAWA
  • Publication number: 20110279698
    Abstract: There is provided an image processing apparatus including an image acquisition unit that obtains color image data composed of wavelength components in a visible light region only, and monochrome image data which does not contain the wavelength components in the visible light region and which is composed of wavelength components in other than visible light region only, a color information extraction unit that extracts color information from the color image data, a luminance information extraction unit that extracts luminance information from the monochrome image data, and a synthesis unit that synthesizes the extracted color information and the extracted luminance information to generate composite image data.
    Type: Application
    Filed: April 20, 2011
    Publication date: November 17, 2011
    Applicant: SONY CORPORATION
    Inventor: Koichi YOSHIKAWA
  • Publication number: 20110199531
    Abstract: Provided is an optical apparatus including a filter (102) that includes a first surface (105) intersecting a rotation axis at a predetermined angle and a second surface (106) orthogonal to the rotation axis and rotates around the rotation axis, a filter (110) that is arranged adjacent to the filter (102), includes a third surface (115) and a fourth surface (116) in a spatial relationship of point-symmetry to the first surface (105) and the second surface (106) about a point on the rotation axis between the filters, and rotates in an opposite direction of the filter (102) around the rotation axis.
    Type: Application
    Filed: September 17, 2010
    Publication date: August 18, 2011
    Applicant: SONY CORPORATION
    Inventor: Koichi Yoshikawa
  • Patent number: 7962020
    Abstract: An imaging apparatus includes an imaging device, and an optical system configured to image light from an imaging subject on the imaging device. The optical system includes a group of lenses and an aperture diaphragm. When NP point is defined as a point where an extended linear component in an object space of a principal ray located in a Gauss region and selected from among principal rays passing through a center of the aperture diaphragm of the optical system crosses an optical axis of the optical system, D represents a diameter of a lens at the closest side to the imaging subject, and LN represents a distance from a lens surface of the lens at the closest side to the imaging subject to the NP point, a formula; 0?LN?D (1) is satisfied.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: June 14, 2011
    Assignee: Sony Corporation
    Inventors: Koichi Yoshikawa, Noriyuki Yamashita
  • Publication number: 20100259600
    Abstract: A three-dimensional imaging apparatus includes: a front-side optical member formed of a non-afocal optical system, the front-side optical member forming an image of a subject; a plurality of rear-side optical members not only disposed downstream of the plane where the front-side optical member forms an image of the subject but also positioned in such a way that the optical axes of the plurality of rear-side optical members are substantially parallel to the optical axis of the front-side optical member but do not coincide therewith, the plurality of rear-side optical members refocusing a real image formed by the front-side optical member; and an imaging device that receives the light rays focused by the rear-side optical members to produce an imaged signal.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Inventor: Koichi YOSHIKAWA
  • Patent number: 7664340
    Abstract: An imaging device includes imagers each having an imaging element. An NP point is located downstream of the imaging element, and all NP points are collectively located within a predetermined radius region centered on one of the NP points. A lens closest to the object is cut along a plane not including the optical axis, and a>H is satisfied, where H is a distance from the optical axis to a center portion of an overlapping region with the adjacent imager when the imaging element is scanned from the optical axis toward the optical axis of the adjacent imager, and a is a distance from the optical axis to a position at which an illuminance ratio does not vary even if an aperture stop state is shifted, although the position is located in a region in which the illuminance ratio decreases as the distance from the optical axis increases.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: February 16, 2010
    Assignee: Sony Corporation
    Inventor: Koichi Yoshikawa
  • Patent number: 7548373
    Abstract: An image pickup device which can obtain an image of wide range picked up by a plurality of cameras is provided by preventing occurrence of parallax.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: June 16, 2009
    Assignee: Sony Corporation
    Inventors: Koichi Yoshikawa, Shigeru Tajima
  • Patent number: 7515177
    Abstract: An image pickup apparatus is able to shoot an image of a wide range by a plurality of image pickup units, it is able to obtain excellent image quality and it can be miniaturized.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: April 7, 2009
    Assignee: Sony Corporation
    Inventor: Koichi Yoshikawa