Patents by Inventor Hirofumi Kobayashi

Hirofumi Kobayashi 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: 20190252444
    Abstract: A semiconductor device in which a first chip and a second chip are stacked including a first wiring line and a second wiring line by which the first chip and the second chip are electrically connected. The first wiring line and the second wiring line each include a bonding portion for bonding one of a plurality of conductive patterns placed in the first chip and one of a plurality of conductive patterns placed in the second chip. The number of bonding portions included in the first wiring line is larger than the number of bonding portions included in the second wiring line.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 15, 2019
    Inventors: Tatsuya Ryoki, Hirofumi Totsuka, Masahiro Kobayashi, Hideaki Ishino, Hiroaki Kobayashi
  • Publication number: 20190253659
    Abstract: A photoelectric conversion device includes a plurality of pixels and a readout circuit. Each of the plurality of pixels includes a pixel circuit including a photoelectric conversion unit. The readout circuit is configured for reading out a signal from the plurality of pixels. The pixel circuit of each of the plurality of pixels includes at least a first transistor that receives a signal based on signal charges generated by the photoelectric conversion unit and is a part of a differential pair. The pixel circuit or the readout circuit has a second transistor. The size of the first transistor and the size of the second transistor are different from each other.
    Type: Application
    Filed: February 4, 2019
    Publication date: August 15, 2019
    Inventors: Hideo Kobayashi, Shinya Nakano, Hirofumi Totsuka, Daisuke Yoshida
  • Patent number: 10321087
    Abstract: A sensor has an image sensing unit including pixel blocks, and a readout unit for reading out a signal from the image sensing unit. The pixel block includes a photoelectric converter, first and second transistors, and a current source. First main electrodes of the first and second transistors are connected to a common node, and the current source is provided between the common node and a predetermined voltage. A signal readout operation includes an operation in which a voltage corresponding to charges in the photoelectric converter is supplied to a control electrode of the first transistor, and a temporally changing reference voltage is supplied to a control electrode of the second transistor. The readout unit reads out a signal from the image sensing unit via a second main electrode of the first transistor.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: June 11, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Yoshida, Yasushi Matsuno, Hirofumi Totsuka, Takashi Muto, Masahiro Kobayashi, Toru Koizumi
  • Patent number: 10294472
    Abstract: The present invention relates to a nucleic acid linker for producing a complex of mRNA, and a protein or a peptide which is encoded by the mRNA, the linker comprising: a spacer portion at the 5?-terminal; a polynucleotide portion hybridizable with at least a part of a sequence of the mRNA; and an arm portion which has a connection portion for the protein or the peptide at the 3?-terminal, in which the spacer portion, the polynucleotide portion, and the arm portion form a single strand, and in which the polynucleotide portion contains a photoreactive base derivative.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: May 21, 2019
    Assignees: THE UNIVERSITY OF TOKYO, NIKON CORPORATION
    Inventors: Takanori Ichiki, Shingo Ueno, Manish Biyani, Ryo Kobayashi, Hirofumi Shiono
  • Patent number: 9498950
    Abstract: A retaining structure of a flexible wiring member includes a flexible wiring member and a retaining member. The flexible wiring member includes a front side wiring electrode formed on a front side of the flexible wiring member and a rear side electrode formed on a rear side thereof, and the flexible wiring member is bonded to the retaining member via the rear side electrode. Such structure may be employed in a liquid discharge head in which wiring and a pressure generator are disposed in an actuator substrate including an electrode. The electrode of the actuator and that of the flexible wiring member are connected, and the flexible wiring member is retained to the actuator or a member joined to the actuator via the retaining structure of the wiring member.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: November 22, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventor: Hirofumi Kobayashi
  • Publication number: 20160338193
    Abstract: A multilayer board disclosed herein includes: a plurality of insulating layers made of a thermosetting resin and stacked on one another, each insulating layer being provided with a via hole; a plurality of wiring each formed between the insulating layers and including an inclined side surface; and a conductive via made of a cured product of conductive paste filled in the via hole and connecting the vertically adjacent wiring to each other. Here, orientations of the inclined side surfaces are alternately changed from the wiring to the wiring.
    Type: Application
    Filed: April 15, 2016
    Publication date: November 17, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Junichi Kanai, Yasuhiro Karahashi, Hirofumi Kobayashi, Shunsuke KOGOI, Junichi Murayama, Koji Komemura, Hidehiko Fujisaki
  • Publication number: 20160128175
    Abstract: A retaining structure of a flexible wiring member includes a flexible wiring member; and a retaining member. The flexible wiring member includes a front side wiring electrode formed on a front side the flexible wiring member and a rear side wiring electrode formed on a rear side thereof, and the flexible wiring member is bonded to the retaining member via the rear side wiring electrode. A liquid discharge head includes nozzles to discharge a liquid; an individual liquid chamber to hold the liquid; a pressure generator to press the liquid inside the individual liquid chamber; an actuator substrate, including an electrode, in which a wiring and the pressure generator are disposed. The electrode of the actuator and that of the flexible wiring member are connected; and the flexible wiring member is retained to the actuator or a member joined to the actuator via the retaining structure of the wiring member.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 5, 2016
    Applicant: RICOH COMPANY, LTD.
    Inventor: Hirofumi Kobayashi
  • Publication number: 20140293468
    Abstract: A light-blocking mask layer (3) having such light transmittance characteristics that an amount of transmitted light decreases gradually as it advances in a radial direction Fr from a center of optical axis Cs is formed on a surface of a flat transparent substrate at least having a light transmittance of 80% or higher using at least a dot pattern Pd formed of a large number of dots d, having a light transmittance of 20% or lower.
    Type: Application
    Filed: March 11, 2014
    Publication date: October 2, 2014
    Applicant: COSINA CO., LTD.
    Inventors: Masayuki MIKAMI, Kazuo KIMURA, Hirofumi KOBAYASHI
  • Patent number: 8273418
    Abstract: Provided herein is a head unit arrangement method for arranging a plurality of head units in a liquid droplet ejection device that plots an image in a matrix form with functional liquid droplets in a number n of colors by performing the number n of primary scans and a number (n?1) of secondary scans. The head unit arrangement method includes evaluating liquid droplet ejection performance of each of the head units based on an inspection result of a volume of liquid droplet ejection from each of the functional liquid droplet ejection heads to arrange two of the head units that exhibit the lowest liquid droplet ejection performance at both ends in the Y-axis direction.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: September 25, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Katagami, Hirofumi Kobayashi, Sadaharu Komori
  • Patent number: 8186806
    Abstract: A head unit includes a plurality of nozzle groups. Each group has a plurality of nozzles discharging liquid as liquid droplets. The nozzles are arranged at an approximately equal distance from one another when viewed from a first direction. The nozzle groups are arranged at the distance when viewed from the first direction and in a direction intersecting with the first direction, and adjacent nozzles of the nozzle groups adjacent when viewed from the first direction discharge an approximately equal amount of the liquid droplet.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: May 29, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Kitahara, Hirofumi Kobayashi
  • Patent number: 8153953
    Abstract: A light receiving circuit includes: a transimpedance amplifier circuit which is connected to a light receiving element; a differential amplifier which operates by a predetermined current supplied by a current source to output a current corresponding to a differential signal between a signal outputted from the transimpedance amplifier circuit and a predetermined reference signal; a current mirror unit which outputs a current corresponding to the current outputted from the differential amplifier; and a conversion unit which converts the current outputted from the current mirror unit into voltage.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeyuki Sakura, Hirofumi Kobayashi
  • Publication number: 20120068052
    Abstract: An optical receiver circuit according to an embodiment includes a light receiving units configured to output a current according to input light, and an inverting amplifier having an input terminal and an output terminal, the input terminal connected to the light receiving units, and a feedback circuit connected between the input terminal and the output terminal, and provided with a plurality of pairs of a pole and a zero on a negative real axis on a Laplace plane so that transimpedance characteristics show high gains of a plurality of steps on high-frequency side.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 22, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeyuki Sakura, Hirofumi Kobayashi
  • Patent number: 7875807
    Abstract: An electronic device includes an electronic part including at least one first electrode, a substrate including at least one second electrode, and at least one bump formed on the at least one first electrode and formed from an elastic conductive resin including a resin having rubbery elasticity, and an acicular conductive filler including a surface layer coated with one of gold, silver, nickel, and copper. The at least one first electrode and the at least one second electrode are electrically connected to each other by mechanically contacting the at least one bump with the at least one second electrode.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: January 25, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Sano, Hirofumi Kobayashi, Hideaki Ohkura
  • Publication number: 20100328397
    Abstract: A head unit includes a plurality of nozzle groups. Each group has a plurality of nozzles discharging liquid as liquid droplets. The nozzles are arranged at an approximately equal distance from one another when viewed from a first direction. The nozzle groups are arranged at the distance when viewed from the first direction and in a direction intersecting with the first direction, and adjacent nozzles of the nozzle groups adjacent when viewed from the first direction discharge an approximately equal amount of the liquid droplet.
    Type: Application
    Filed: September 2, 2010
    Publication date: December 30, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tsuyoshi KITAHARA, Hirofumi KOBAYASHI
  • Patent number: 7810903
    Abstract: A head unit includes a plurality of nozzle groups. Each group has a plurality of nozzles discharging liquid as liquid droplets. The nozzles are arranged at an approximately equal distance from one another when viewed from a first direction. The nozzle groups are arranged at the distance when viewed from the first direction and in a direction intersecting with the first direction, and adjacent nozzles of the nozzle groups adjacent when viewed from the first direction discharge an approximately equal amount of the liquid droplet.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: October 12, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Tsuyoshi Kitahara, Hirofumi Kobayashi
  • Patent number: 7755020
    Abstract: There is provided a light receiving circuit including, a light receiving element outputting electrical current corresponding to input light, and a current-voltage converter having current-voltage conversion characteristic, the current-voltage conversion characteristic becoming smaller at a low frequency side and larger at a high frequency side, the current-voltage converter converting the current to the voltage and outputting the voltage.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: July 13, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeyuki Sakura, Hirofumi Kobayashi
  • Patent number: 7748114
    Abstract: The present invention discloses a method of forming a conductive pattern including the steps of a) printing a conductive pattern onto a surface of a base material having a liquid repellent property, b) providing a lyophilic property to a predetermined area of the surface of the base material which area does not have the conductive pattern printed thereon, and c) forming an insulating layer that covers the conductive pattern.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: July 6, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Sano, Hideaki Ohkura, Hirofumi Kobayashi, Kunio Ikeda
  • Patent number: 7607897
    Abstract: A reciprocating compressor includes a cylinder block having formed therein a plurality of cylinders, pistons that make reciprocal movement inside the cylinders, a first cylinder head fixed to one end of the cylinder block via a valve plate, a second cylinder head fixed to another end of the cylinder block via a valve plate, a first delivery chamber formed at the first cylinder head, into which a working fluid let out from a first compression space formed toward one end inside each of the cylinders is guided, a second delivery chamber formed at the second cylinder head, into which a working fluid let out from a second compression space formed toward another end inside each of the cylinders is guided, a plurality of delivery passages formed at the cylinder block and an outlet port located at the cylinder block or the cylinder head.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: October 27, 2009
    Assignee: Valeo Thermal Systems Japan Corporation
    Inventors: Satoshi Watanabe, Minoru Kanaizuka, Yasunori Hujita, Ryosuke Izawa, Toshiaki Kuribara, Hironori Tomita, Hirofumi Kobayashi
  • Publication number: 20090160890
    Abstract: Provided herein is a head unit arrangement method for arranging a plurality of head units in a liquid droplet ejection device that plots an image in a matrix form with functional liquid droplets in a number n of colors by performing the number n of primary scans and a number (n?1) of secondary scans. The head unit arrangement method includes evaluating liquid droplet ejection performance of each of the head units based on an inspection result of a volume of liquid droplet ejection from each of the functional liquid droplet ejection heads to arrange two of the head units that exhibit the lowest liquid droplet ejection performance at both ends in the Y-axis direction.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 25, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Satoru KATAGAMI, Hirofumi KOBAYASHI, Sadaharu KOMORI
  • Publication number: 20090084942
    Abstract: A light receiving circuit includes: a transimpedance amplifier circuit which is connected to a light receiving element; a differential amplifier which operates by a predetermined current supplied by a current source to output a current corresponding to a differential signal between a signal outputted from the transimpedance amplifier circuit and a predetermined reference signal; a current mirror unit which outputs a current corresponding to the current outputted from the differential amplifier; and a conversion unit which converts the current outputted from the current mirror unit into voltage.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeyuki Sakura, Hirofumi Kobayashi