Patents by Inventor Koki Hayashi

Koki Hayashi 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: 9983062
    Abstract: A photoelectric conversion element is realized in which the movement direction of electrons in the element changes according to the wavelength of light to be converted. A photoelectric conversion unit includes an active layer on which light to be converted is incident, an intermediate layer that is arranged on the active layer on a side opposite to the side on which the light to be converted is incident, and a reflection layer that is arranged so as to oppose the active layer with the intermediate layer interposed therebetween. The active layer includes a plasmonic material, which is a material in which plasmon resonance occurs due to a reciprocal action with the light to be converted. The intermediate layer has both a semiconductor property and transparency with respect to the light to be converted. The reflection layer has reflectivity with respect to the light to be converted.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: May 29, 2018
    Assignee: IMRA JAPAN KABUSHIKI KAISHA
    Inventors: Vu Chung Hoang, Koki Hayashi, Yasuo Ito
  • Publication number: 20170276547
    Abstract: A photoelectric conversion element is realized in which the movement direction of electrons in the element changes according to the wavelength of light to be converted. A photoelectric conversion unit includes an active layer on which light to be converted is incident, an intermediate layer that is arranged on the active layer on a side opposite to the side on which the light to be converted is incident, and a reflection layer that is arranged so as to oppose the active layer with the intermediate layer interposed therebetween. The active layer includes a plasmonic material, which is a material in which plasmon resonance occurs due to a reciprocal action with the light to be converted. The intermediate layer has both a semiconductor property and transparency with respect to the light to be converted. The reflection layer has reflectivity with respect to the light to be converted.
    Type: Application
    Filed: July 15, 2016
    Publication date: September 28, 2017
    Applicant: IMRA JAPAN KABUSHIKI KAISHA
    Inventors: Vu Chung HOANG, Koki HAYASHI, Yasuo ITO
  • Patent number: 9555639
    Abstract: A liquid supplying apparatus configured to supply a liquid to a liquid ejecting section that is configured to eject the liquid, the liquid supplying apparatus comprising a liquid containing portion configured to contain the liquid, and a fluid communication member in fluid communication with the liquid containing portion and having one end that is exposed to air, the fluid communication member further having a liquid visual recognition portion through which the liquid inside the fluid communication member is visually recognizable.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: January 31, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Hidenao Suzuki, Munehide Kanaya, Naomi Kimura, Koki Hayashi, Koji Nishimaki, Shoma Kudo
  • Publication number: 20160193847
    Abstract: A liquid supplying apparatus, configured to supply a liquid to a liquid ejecting section that is configured to eject the liquid, includes a tank configured to contain the liquid, the tank including a liquid containing section, and a container section connected to the tank. The container section is exposed to air through the tank, and the container section is connected to the liquid containing section of the tank.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Inventors: Hidenao SUZUKI, Munehide KANAYA, Naomi KIMURA, Koki HAYASHI, Koji NISHIMAKI, Shoma KUDO
  • Patent number: 9270138
    Abstract: A power transmission system for transmitting electrical energy from a transmission antenna to a reception antenna via an electromagnetic field, including: an inverter for converting DC voltage into AC voltage having a prescribed frequency and outputting the AC voltage; a transmission-side control unit for performing a control for keeping the drive frequency of the inverter at a prescribed frequency, controlling the voltage of the DC voltage inputted into the inverter, and controlling to keep the power value outputted from the inverter constant; a transmission antenna into which the inverter inputs the AC voltage; a rectifier for rectifying the output from the reception antenna into DC voltage; a step-up/step-down unit for stepping up or down and then outputting the DC voltage from the rectifier; a battery charged by the output from the step-up/step-down unit; and a reception-side control unit for controlling the step-up/step-down unit and charging the battery most efficiently.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: February 23, 2016
    Assignee: EQUOS RESEARCH CO., LTD.
    Inventors: Hiroyuki Yamakawa, Yasuo Ito, Koki Hayashi
  • Patent number: 9254666
    Abstract: Provided is a liquid ejecting apparatus which includes a carriage which reciprocates in a state where a liquid ejecting head is mounted thereon, a tank unit which is provided outside the carriage and accommodates ink, four liquid supply tubes which communicate with the liquid ejecting head and the tank unit, and a tube support portion which supports the liquid supply tubes in a state where the liquid supply tubes are aligned in a horizontal direction, in which, in a case main body, the liquid supply tubes extend further to the tank unit side than a portion in which the liquid supply tubes are supported by the tube support portion, in a state where a parallel alignment direction of the four liquid supply tubes changes from the horizontal direction (a transporting direction) to a vertical direction.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: February 9, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Naomi Kimura, Koki Hayashi, Hidenao Suzuki, Shoma Kudo
  • Patent number: 9241266
    Abstract: The present invention relates to an authentication system, a small base station, and an authentication method which allow a server side to authenticate whether an installation position of a small base station is valid or not. In a packet to be sent as an authentication request from the femto base station 1, in-IC card information of an IC card inserted into the femto base station 1 is contained. A network terminating device 2 converts a local IP address described in a header of the packet to a global IP address, and sends it to a femto concentrator 4. The femto concentrator 4 generates authentication information by associating the in-IC card information with the global IP address, and sends it to an authentication server 5. The authentication server 5 determines that the installation position of the femto base station 1 is valid if the in-IC card information and global IP address included in the authentication information have been associated with each other and registered in an authentication table.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: January 19, 2016
    Assignee: NEC CORPORATION
    Inventors: Katsuhisa Nakamura, Yoshio Wada, Koki Hayashi, Yuichiro Kameoka
  • Publication number: 20150210081
    Abstract: A liquid supplying apparatus configured to supply a liquid to a liquid ejecting section that is configured to eject the liquid, the liquid supplying apparatus comprising a liquid containing portion configured to contain the liquid, and a fluid communication member in fluid communication with the liquid containing portion and having one end that is exposed to air, the fluid communication member further having a liquid visual recognition portion through which the liquid inside the fluid communication member is visually recognizable.
    Type: Application
    Filed: January 27, 2015
    Publication date: July 30, 2015
    Inventors: Hidenao SUZUKI, Munehide KANAYA, Naomi KIMURA, Koki HAYASHI, Koji NISHIMAKI, Shoma KUDO
  • Publication number: 20150174907
    Abstract: Provided is a liquid ejecting apparatus which includes a carriage which reciprocates in a state where a liquid ejecting head is mounted thereon, a tank unit which is provided outside the carriage and accommodates ink, four liquid supply tubes which communicate with the liquid ejecting head and the tank unit, and a tube support portion which supports the liquid supply tubes in a state where the liquid supply tubes are aligned in a horizontal direction, in which, in a case main body, the liquid supply tubes extend further to the tank unit side than a portion in which the liquid supply tubes are supported by the tube support portion, in a state where a parallel alignment direction of the four liquid supply tubes changes from the horizontal direction (a transporting direction) to a vertical direction.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 25, 2015
    Inventors: Naomi KIMURA, Koki HAYASHI, Hidenao SUZUKI, Shoma KUDO
  • Patent number: 9055437
    Abstract: A communication system for solving a problem, in which secure communications security cannot be ensured in communications between a femtocell base station and UE, is provided. The communication system includes UE (User Equipment) and an HLR (Home Location Register) used in an IMS (IP Multimedia subsystem) network and a femtocell base station (Femto AP) that constructs a predetermined communication area. The femtocell base station exists between the UE and the HLR, acquires a concealment key corresponding to the UE from the HLR during authentication of the UE, and executes a concealment process to conceal the identity of the UE based on the concealment key.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: June 9, 2015
    Assignee: NEC CORPORATION
    Inventors: Osamu Kurokawa, Kazuki Eguchi, Koki Hayashi, Yuichiro Kameoka, Yasuhiro Watanabe, Hiroaki Akiyama, Takayuki Kido
  • Patent number: 9037347
    Abstract: Described herein are devices and methods for controlling inclination in a vehicle. In certain aspects, inclination of the vehicle can be controlled with an inclination control processing section that includes a first control value limiting processing section which calculates a moving amount of the centroid, calculates a maximum angular acceleration, and limits a variation of the control value for inclination control on the basis of the maximum angular acceleration.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: May 19, 2015
    Assignee: EQUOS RESEARCH CO., LTD.
    Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
  • Patent number: 8997911
    Abstract: A vehicle includes a vehicle body having a steering section and a main body section connected together; a steerable wheel which is rotatably mounted to the steering section and which steers the vehicle body; a non-steerable wheel which is rotatably mounted to the main body section; a steering apparatus for inputting a steering instruction information; an inclination actuator apparatus for inclining the steering section or the main body section in a turning direction; a steering actuator apparatus for varying a steering angle of the steerable wheel based on the steering instruction information inputted from the steering apparatus; and a control apparatus which controls the inclination actuator apparatus and the steering actuator apparatus. The control apparatus controls a center of gravity to move in a steering direction included in the steering instruction information at an initial steering stage so that an acceleration toward turning-locus inner side is generated.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: April 7, 2015
    Assignee: Equos Research, Co., Ltd.
    Inventor: Koki Hayashi
  • Publication number: 20150061580
    Abstract: A power transmission system for transmitting electrical energy from a transmission antenna to a reception antenna via an electromagnetic field, including: an inverter for converting DC voltage into AC voltage having a prescribed frequency and outputting the AC voltage; a transmission-side control unit for performing a control for keeping the drive frequency of the inverter at a prescribed frequency, controlling the voltage of the DC voltage inputted into the inverter, and controlling to keep the power value outputted from the inverter constant; a transmission antenna into which the inverter inputs the AC voltage; a rectifier for rectifying the output from the reception antenna into DC voltage; a step-up/step-down unit for stepping up or down and then outputting the DC voltage from the rectifier; a battery charged by the output from the step-up/step-down unit; and a reception-side control unit for controlling the step-up/step-down unit and charging the battery most efficiently.
    Type: Application
    Filed: February 27, 2013
    Publication date: March 5, 2015
    Inventors: Hiroyuki Yamakawa, Yasuo Ito, Koki Hayashi
  • Publication number: 20150054456
    Abstract: An electric power transmission system for curbing reduction in power transmission transmits energy via an electromagnetic field from a power transmission antenna to a power receiving antenna including: an inverter converting DC to AC voltage of a predetermined frequency to output; a power transmission-side control unit controls a drive frequency of the inverter and DC voltage input to the inverter; controlling a power value output from the inverter kept at constant level; the power transmission antenna to which AC voltage is input from the inverter; a rectifying unit rectifies output of the power receiving antenna obtaining DC voltage, and outputs DC voltage; a step-up and step-down unit steps up or down DC voltage output from the rectifying to output; a battery is charged with output of step-up and step-down unit; and a power receiving-side control unit controls the step-up and step-down unit to charge the battery with maximum power value.
    Type: Application
    Filed: February 27, 2013
    Publication date: February 26, 2015
    Inventors: Hiroyuki Yamakawa, Yasuo Ito, Koki Hayashi
  • Patent number: 8831833
    Abstract: The vehicle includes a vehicle body having a steering section and a drive section connected together; a steerable wheel which steers the vehicle body; a drive wheel which drives the vehicle body; an inclination actuator apparatus for inclining the steering section or the drive section in a turning direction; a plurality of sensors which detect lateral accelerations; yaw angular velocity detection means; vehicle speed detection means; and a control apparatus which controls the inclination of the vehicle body by controlling the inclination actuator apparatus. The control apparatus performs feedback control on the basis of the lateral accelerations, calculates a link angular velocity predicted value from the derivative value of the yaw angular velocity and the vehicle speed, and controls the inclination of the vehicle body by performing feedforward control while using the calculated link angular velocity predicted value.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 9, 2014
    Assignee: Equos Research Co., Ltd.
    Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
  • Publication number: 20140124286
    Abstract: A vehicle includes a vehicle body having a steering section and a main body section connected together; a steerable wheel which is rotatably mounted to the steering section and which steers the vehicle body; a non-steerable wheel which is rotatably mounted to the main body section; a steering apparatus for inputting a steering instruction information; an inclination actuator apparatus for inclining the steering section or the main body section in a turning direction; a steering actuator apparatus for varying a steering angle of the steerable wheel based on the steering instruction information inputted from the steering apparatus; and a control apparatus which controls the inclination actuator apparatus and the steering actuator apparatus. The control apparatus controls a center of gravity to move in a steering direction included in the steering instruction information at an initial steering stage so that an acceleration toward turning-locus inner side is generated.
    Type: Application
    Filed: July 26, 2012
    Publication date: May 8, 2014
    Applicant: EQUOS RESEARCH CO., LTD.
    Inventor: Koki Hayashi
  • Publication number: 20130304318
    Abstract: Described herein are devices and methods for controlling inclination in a vehicle. In certain aspects, inclination of the vehicle can be controlled with an inclination control processing section that includes a first control value limiting processing section which calculates a moving amount of the centroid, calculates a maximum angular acceleration, and limits a variation of the control value for inclination control on the basis of the maximum angular acceleration.
    Type: Application
    Filed: January 27, 2012
    Publication date: November 14, 2013
    Applicant: EQUOS RESEARCH CO., LTD.
    Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
  • Publication number: 20130297152
    Abstract: The vehicle includes a vehicle body having a steering section and a drive section connected together; a steerable wheel which steers the vehicle body; a drive wheel which drives the vehicle body; an inclination actuator apparatus for inclining the steering section or the drive section in a turning direction; a plurality of sensors which detect lateral accelerations; yaw angular velocity detection means; vehicle speed detection means; and a control apparatus which controls the inclination of the vehicle body by controlling the inclination actuator apparatus. The control apparatus performs feedback control on the basis of the lateral accelerations, calculates a link angular velocity predicted value from the derivative value of the yaw angular velocity and the vehicle speed, and controls the inclination of the vehicle body by performing feedforward control while using the calculated link angular velocity predicted value.
    Type: Application
    Filed: January 18, 2012
    Publication date: November 7, 2013
    Applicant: EQUOS RESEARCH CO., LTD.
    Inventors: Koki Hayashi, Yuji Takakura, Shinji Yamamoto
  • Patent number: 8352147
    Abstract: To provide a vehicle control device that improves the accuracy of an automatic follow-up control in an inverted pendulum vehicle, a vehicle control device according to the present invention performs an automatic follow-up running control in an inverted pendulum vehicle so as to automatically follow a preceding vehicle.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: January 8, 2013
    Assignee: Equos Research Co., Ltd.
    Inventors: Takafumi Miyake, Koki Hayashi
  • Publication number: 20110287742
    Abstract: The present invention relates to an authentication system, a small base station, and an authentication method which allow a server side to authenticate whether an installation position of a small base station is valid or not. In a packet to be sent as an authentication request from the femto base station 1, in-IC card information of an IC card inserted into the femto base station 1 is contained. A network terminating device 2 converts a local IP address described in a header of the packet to a global IP address, and sends it to a femto concentrator 4. The femto concentrator 4 generates authentication information by associating the in-IC card information with the global IP address, and sends it to an authentication server 5. The authentication server 5 determines that the installation position of the femto base station 1 is valid if the in-IC card information and global IP address included in the authentication information have been associated with each other and registered in an authentication table.
    Type: Application
    Filed: November 20, 2009
    Publication date: November 24, 2011
    Applicant: NEC CORPORATION
    Inventors: Katsuhisa Nakamura, Yoshio Wada, Koki Hayashi, Yuichiro Kameoka