Patents by Inventor Kai IKEDA

Kai IKEDA 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: 10787393
    Abstract: The present invention provides a silicon nitride sintered body including silicon nitride crystal grains and a grain boundary phase, wherein the silicon nitride crystal grains are covered with the grain boundary phase and width of the grain boundary phase is 0.2 nm or more. It is preferable that the width of the grain boundary phase is 0.2 nm to 5 nm. Additionally, it is preferable that the silicon nitride sintered body includes 15% by mass or less of the grain boundary phase. According to the above-described configuration, it is possible to provide a high-temperature-resistant silicon nitride sintered body in which degradation of the grain boundary phase under high temperature environment is suppressed. This silicon nitride sintered body is suitable for constituent material of a high-temperature-resistant member, use environment of which is 300° C. or higher.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: September 29, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Isao Ikeda, Kai Funaki, Yutaka Abe
  • Patent number: 10744592
    Abstract: The present invention provides a welding tool member for friction stir welding comprising a silicon nitride sintered body, wherein the silicon nitride sintered body includes an additive component other than silicon nitride in a content of 15% by mass or less, and the additive component includes three or more elements selected from Y, Al, Mg, Si, Ti, Hf, Mo and C. It is preferable that the content of the additive component is 3% by mass or more and 12.5% by mass or less. It is also preferable that the additive component includes four or more elements selected from Y, Al, Mg, Si, Ti, Hf, Mo and C. Due to above structure, there can be provided a welding tool member for friction stir welding having a high durability.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: August 18, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Isao Ikeda, Kai Funaki, Yutaka Abe
  • Publication number: 20200257994
    Abstract: An inference processing system includes inference processing devices and performs inference processing such that a succeeding inference processing device performs inference processing to a result of inference processing by a preceding inference processing device.
    Type: Application
    Filed: January 23, 2020
    Publication date: August 13, 2020
    Applicant: FUJITSU CLIENT COMPUTING LIMITED
    Inventors: Yuichiro Ikeda, Masatoshi Kimura, Tomohiro Ishida, Kai Mihara
  • Publication number: 20200257993
    Abstract: An information processing system includes: a failure detector, a first failure handling unit and a second failure handling unit. The failure detector detects any of inference processing apparatuses in which a failure has occurred. The first failure handling unit causes another inference processing apparatus other than the inference processing apparatus in which the failure has occurred to execute an inference process of the inference processing apparatus in which the failure has occurred. The second failure handling unit inputs a result of an inference process at a preceding stage of the inference processing apparatus in which the failure has occurred to the another inference processing apparatus and outputs an inference result that the another inference processing apparatus generates based on the input inference result to an inference processing apparatus at a subsequent stage of the inference processing apparatus in which the failure has occurred.
    Type: Application
    Filed: January 23, 2020
    Publication date: August 13, 2020
    Applicant: FUJITSU CLIENT COMPUTING LIMITED
    Inventors: Yuichiro Ikeda, Masatoshi Kimura, Tomohiro Ishida, Kai Mihara
  • Publication number: 20200210866
    Abstract: An information processing device includes: a main processor. The main processor receives resource information related to a processing status from each of N processors assuming that N is an integral number equal to or larger than 2, applies the received resource information of the N processors to a computational expression, and calculates processing times corresponding to a processing request from an application for the respective N processors, selects one processor from among the N processors based on the processing times of the N processors, and transmits the processing request to the one processor.
    Type: Application
    Filed: November 21, 2019
    Publication date: July 2, 2020
    Applicant: FUJITSU CLIENT COMPUTING LIMITED
    Inventors: Yuichiro Ikeda, Kai Mihara
  • Patent number: 10663132
    Abstract: Provided is a vehicle lamp which enables work for connecting an organic EL panel and a power feeding section to be omitted. A vehicle lamp 10 includes: a lamp unit 20; a mounting section 70 to which the lamp unit 20 is detachably mounted; and first fixing means (a first fixing section) which fixes the lamp unit 20 detachably mounted to the mounting section 70, and the mounting section 70, wherein the lamp unit 20 includes: an organic EL panel 40 including a front surface 40a with a light-emitting surface 40a1, and a rear surface 40b on an opposite side to the front surface 40a; a first electrode 54 electrically connected to the organic EL panel 40; and a first bracket 30 which holds the organic EL panel 40 and the first electrode 54, and the mounting section 70 includes a second electrode 82 to which the first electrode 54 of the lamp unit 20 fixed by the first fixing means (first fixing section) is to be electrically connected.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: May 26, 2020
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Koichiro Ano, Hiroyuki Chikama, Kai Ikeda
  • Patent number: 10351209
    Abstract: A bicycle shifting device includes a first shifting mechanism, a transmission mechanism, and a setting mechanism. The setting mechanism sets paths in the transmission mechanism to transmit rotation from an input body to an output body at transmission ratios of at least three steps. The transmission mechanism establishes a first path transmitting the rotation at one of first and second transmission ratios by changing a rotational speed with the first shifting mechanism, and a second path transmitting the rotation at a greater transmission ratio than the first and second transmission ratios by changing the rotational speed with a different shifting mechanism from the first shifting mechanism. The first path includes first and second planetary mechanisms. The setting mechanism sets the transmission mechanism so that the rotational speed is not changed by the first planetary mechanism in the second path.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: July 16, 2019
    Assignee: Shimano Inc.
    Inventors: Takashi Yamamoto, Hiroyuki Urabe, Kai Ikeda
  • Publication number: 20190210149
    Abstract: The friction stir welding tool member according to the present invention is made of a ceramic member in which a shoulder portion and a probe portion are integrally formed, wherein a root portion of the probe portion and an end portion of the shoulder portion have a curved surface shape; and the friction stir welding tool member has a ratio (R1/D) of 0.02 or more and 0.20 or less when a curvature radius of the end portion of the shoulder portion is defined as R1 (mm) and an outer diameter of the shoulder portion is defined as D (mm). In addition, the ceramic member is preferably made of a silicon nitride sintered body having a Vickers hardness of 1400 HV1 or more. According to the above-described configuration, a friction stir welding tool member having excellent durability can be provided.
    Type: Application
    Filed: August 4, 2017
    Publication date: July 11, 2019
    Applicants: OSAKA UNIVERSITY, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hidetoshi FUJII, Yoshiaki MORISADA, Kai FUNAKI, Isao IKEDA, Yutaka ABE, Masahiro KATO
  • Publication number: 20190168337
    Abstract: The friction stir welding tool member according to the present invention is made of a silicon nitride sintered body, wherein the silicon nitride sintered body contains 15% by mass or less of additive components except silicon nitride in such a manner that the additive components include at least one element selected from lanthanoid elements and at least one element selected from Mg, Ti, Hf, and Mo. In addition, it is preferable that the additive components further include at least one element selected from Al, Si, and C. According to the above-described configuration, a friction stir welding tool member having an excellent durability can be provided.
    Type: Application
    Filed: August 4, 2017
    Publication date: June 6, 2019
    Applicants: OSAKA UNIVERSITY, TOSHIBA MATERIALS CO., LTD.
    Inventors: Hidetoshi FUJII, Yoshiaki MORISADA, Kai FUNAKI, Isao IKEDA, Yutaka ABE, Masahiro KATO
  • Publication number: 20190063705
    Abstract: Provided is a vehicle lamp which enables work for connecting an organic EL panel and a power feeding section to be omitted. A vehicle lamp 10 includes: a lamp unit 20; a mounting section 70 to which the lamp unit 20 is detachably mounted; and first fixing means (a first fixing section) which fixes the lamp unit 20 detachably mounted to the mounting section 70, and the mounting section 70, wherein the lamp unit 20 includes: an organic EL panel 40 including a front surface 40a with a light-emitting surface 40a1, and a rear surface 40b on an opposite side to the front surface 40a; a first electrode 54 electrically connected to the organic EL panel 40; and a first bracket 30 which holds the organic EL panel 40 and the first electrode 54, and the mounting section 70 includes a second electrode 82 to which the first electrode 54 of the lamp unit 20 fixed by the first fixing means (first fixing section) is to be electrically connected.
    Type: Application
    Filed: August 21, 2018
    Publication date: February 28, 2019
    Inventors: Koichiro Ano, Hiroyuki Chikama, Kai Ikeda
  • Publication number: 20180237105
    Abstract: A bicycle shifting device includes a first shifting mechanism, a transmission mechanism, and a setting mechanism. The setting mechanism sets paths in the transmission mechanism to transmit rotation from an input body to an output body at transmission ratios of at least three steps. The transmission mechanism establishes a first path transmitting the rotation at one of first and second transmission ratios by changing a rotational speed with the first shifting mechanism, and a second path transmitting the rotation at a greater transmission ratio than the first and second transmission ratios by changing the rotational speed with a different shifting mechanism from the first shifting mechanism. The first path includes first and second planetary mechanisms. The setting mechanism sets the transmission mechanism so that the rotational speed is not changed by the first planetary mechanism in the second path.
    Type: Application
    Filed: February 15, 2018
    Publication date: August 23, 2018
    Inventors: Takashi YAMAMOTO, Hiroyuki URABE, Kai IKEDA