Patents by Inventor Tomoyuki Yokota

Tomoyuki Yokota 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: 20210326623
    Abstract: A detection device according to an aspect includes: a sensor base; a plurality of photoelectric conversion elements that are provided in a detection area of the sensor base and are configured to receive light incident thereon and output signals corresponding to the received light; a plurality of switching elements provided in the respective photoelectric conversion elements; a plurality of gate lines that are coupled to the switching elements and extend in a first direction; a first light source configured to emit first light having a first maximum emission wavelength; and a second light source configured to emit second light having a second maximum emission wavelength.
    Type: Application
    Filed: June 25, 2021
    Publication date: October 21, 2021
    Inventors: Hirofumi KATO, Takanori TSUNASHIMA, Makoto UCHIDA, Takashi NAKAMURA, Akio TAKIMOTO, Takao SOMEYA, Tomoyuki YOKOTA
  • Publication number: 20210260689
    Abstract: Disclosed is a clad steel plate with further improved low temperature toughness along with excellent HIC resistance while ensuring a tensile strength of 535 MPa or more. A clad steel plate includes: a base steel; and a clad metal made of a corrosion resistant alloy bonded to one surface of the base steel, in which the base steel has: a chemical composition with appropriately controlled values of ACR and PHIC; and a steel microstructure in which bainite is present in an area fraction of 94% or more at a ½ thickness position in a thickness direction of the base steel, and with an average crystal grain size of 25 ?m or less, and shear strength at a bonded interface between the base steel and the cladding metal is 300 MPa or more.
    Type: Application
    Filed: June 25, 2019
    Publication date: August 26, 2021
    Applicant: JFE STEEL CORPORATION
    Inventors: Ryosuke SAKAI, Yota KURONUMA, Junji SHIMAMURA, Tomoyuki YOKOTA
  • Publication number: 20210175399
    Abstract: A package for installing a semiconductor element includes: a lead frame; a resin frame disposed on the lead frame and including a housing portion formed by an opening that widens with the distance in the upward direction from the lead frame; and a metal reflector that fits in the housing portion and includes an opening portion corresponding to the housing portion of the resin frame. The opening area of the opening portion of the metal reflector increases with the distance in the upward direction from the lead frame, and the metal reflector includes a flange around the side of the metal reflector in which the opening area is large. The flange is placed on the top surface of the resin frame.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 10, 2021
    Inventors: Ikuo NIWA, Yasutaka HASE, Shunsuke AKAI, Hayato TAKAGI, Tomoyuki YOKOTA, Hiroshi SANADA
  • Publication number: 20210054471
    Abstract: A method for producing a steel material for line pipes which has a tensile strength of 570 MPa or more, a compressive strength of 440 MPa or more, and a thickness of 30 mm or more, the method including heating a steel having a specific composition to a temperature of 1000° C. to 1200° C.; performing hot rolling such that a cumulative rolling reduction ratio in a non-recrystallization temperature range is 60% or more, a cumulative rolling reduction ratio in a temperature range of (a rolling finish temperature +20° C.) or less is 50% or more, and a rolling finish temperature is the Ar3 transformation point or more and 790° C. or less; and subsequently performing accelerated cooling from a cooling start temperature of the Ar3 transformation point or more, at a cooling rate of 10° C./s or more, until the temperature of a surface of a steel plate reaches 300° C. to 500° C.
    Type: Application
    Filed: January 22, 2019
    Publication date: February 25, 2021
    Applicant: JFE Steel Corporation
    Inventors: Kyono Yasuda, Tomoyuki Yokota, Akihiko Tanizawa, Ryuji Muraoka, Kazukuni Hase
  • Publication number: 20210032732
    Abstract: A method for producing a steel material for line pipes including heating a steel having a specific composition to a temperature of 1000° C. to 1200° C.; performing hot rolling such that a cumulative rolling reduction ratio in a non-recrystallization temperature range is 60% or more, a cumulative rolling reduction ratio in a temperature range of (a rolling finish temperature +20° C.) or less is 50% or more, and a rolling finish temperature is the Ar3 transformation point or more and 790° C. or less; subsequently performing accelerated cooling from a temperature of the Ar3 transformation point or more, at a cooling rate of 10° C./s or more, to a cooling stop temperature of 200° C. to 450° C.; and then performing reheating such that the temperature of a surface of the steel plate is 350° C. to 550° C. and the temperature of the center of the steel plate is less than 550° C.
    Type: Application
    Filed: January 22, 2019
    Publication date: February 4, 2021
    Applicant: JFE Steel Corporation
    Inventors: Kyono Yasuda, Tomoyuki Yokota, Akihiko Tanizawa, Ryuji Muraoka, Kazukuni Hase
  • Publication number: 20210025023
    Abstract: Disclosed is a duplex stainless clad steel plate in which a duplex stainless steel plate as a cladding metal is bonded or joined to one or both surfaces of a base steel plate, in which the base steel plate comprises a predetermined chemical composition such that Nb/N is 3.0 or more and Ceq is 0.35 to 0.45, and the duplex stainless steel plate comprises: a predetermined chemical composition such that PI is 34.0 to 43.0; and a microstructure containing a ferrite phase in an area fraction of 35% to 65%, and in the microstructure, an amount of precipitated Cr is 2.00% or less and an amount of precipitated Mo is 0.50% or less.
    Type: Application
    Filed: March 28, 2019
    Publication date: January 28, 2021
    Applicant: JFE STEEL CORPORATION
    Inventors: Yota KURONUMA, Hirofumi OHTSUBO, Tomoyuki YOKOTA
  • Publication number: 20210025044
    Abstract: Disclosed is a duplex stainless clad steel plate in which a duplex stainless steel plate as a cladding metal is bonded or joined to one or both surfaces of a base steel plate, in which the base steel plate comprises a predetermined chemical composition such that Nb/N is 3.0 or more and Ceq is 0.35 to 0.45, and the duplex stainless steel plate comprises: a predetermined chemical composition such that PI is 33.0 to 38.0; and a microstructure containing a ferrite phase in an area fraction of 35% to 65%, and in the microstructure, an amount of precipitated Cr is 1.00% or less and an amount of precipitated Mo is 0.50% or less.
    Type: Application
    Filed: March 28, 2019
    Publication date: January 28, 2021
    Applicant: JFE STEEL CORPORATION
    Inventors: Yota KURONUMA, Hirofumi OHTSUBO, Tomoyuki YOKOTA
  • Patent number: 10302506
    Abstract: In order to provide a resin composition for temperature sensors that includes a polymer and exhibits high flexibility, higher sensitivity and high cyclic repeatability, a temperature sensor element, a temperature sensor, and a method for producing a temperature sensor, the resin composition (10) for temperature sensors is configured to have conductive particles (2) dispersed in an acrylic polymer (1) obtained by copolymerizing a first acrylic monomer represented by a general formula CH2CHCOOX1 and a second acrylic monomer represented by a general formula CH2CHCOOX2.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 28, 2019
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Tsuyoshi Sekitani, Yuki Terakawa, Tomoyuki Yokota, Takao Someya, Jonathan T. Reeder
  • Patent number: 9950743
    Abstract: In a vehicle subframe, one of a pair of cross members includes a lower member open to a lower side of a vehicle, with an upper wall thereof having an upper wall recess depressed downward, an upper member arranged so as to cover the upper wall recess from above the vehicle and connected to the lower member, an inside space defined by the lower member and the upper member in cooperation, and a holding member connected to the lower member and the upper member in a mode in which the holding member is sandwiched between the lower member and the upper member, while penetrating the inside space in a longitudinal direction, to hold a component to be mounted.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: April 24, 2018
    Assignee: F-TECH INC.
    Inventor: Tomoyuki Yokota
  • Patent number: 9833856
    Abstract: A circumferential welded joint of a line pipe is formed by butting against each other end portions of steel pipes having a yield strength according to 5L Specification of API Standards not smaller than 555 N/mm2 and welding the butted portions in a circumferential direction. A joint strength ratio ?match=(TS-w/TS-b)·(YS-w/YS-b) represented by a product of a ratio between a tensile strength TS-w of a weld metal and a tensile strength TS-b of a base material and a ratio between a yield strength YS-w of the weld metal and a yield strength YS-b of the base material, and a critical equivalent plastic strain ?p-cri [%] for ductile crack generation in a base material heat affected zone satisfy Equation (1), and the yield strengths YS-w, YS-b of the weld metal and base material satisfy Equation (2). ?match>4.85?p-cri?0.31??(1) YS-w/YS-b?1.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: December 5, 2017
    Assignee: JFE STEEL CORPORATION
    Inventors: Takahiro Sakimoto, Satoshi Igi, Tomoyuki Yokota
  • Patent number: 9828029
    Abstract: A pair of side members extends in a longitudinal direction of a vehicle in a width direction and have a plurality of coupling portions coupling with a vehicle body member of a vehicle. A pair of cross members extends in the width direction to face each other in the longitudinal direction and couple the pair of side members. A pair of coupling members is provided in the side members to couple a corresponding one of the plurality of coupling portions with the vehicle body member. A pair of support members is provided in the cross members to support correspondingly a pair of suspension arms provided in the vehicle and facing each other in the width direction. The lower parts of the support members are welded to upper walls of the coupling members and vertical walls of one of the cross members straddling the upper walls and the vertical walls.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: November 28, 2017
    Assignees: F-TECH INC., HONDA MOTOR CO., LTD.
    Inventors: Toru Kawai, Tomoyuki Yokota, Toshiya Takahashi, Kazumi Mikami
  • Publication number: 20170176262
    Abstract: In order to provide a resin composition for temperature sensors that includes a polymer and exhibits high flexibility, higher sensitivity and high cyclic repeatability, a temperature sensor element, a temperature sensor, and a method for producing a temperature sensor, the resin composition (10) for temperature sensors is configured to have conductive particles (2) dispersed in an acrylic polymer (1) obtained by copolymerizing a first acrylic monomer represented by a general formula CH2CHCOOX1 and a second acrylic monomer represented by a general formula CH2CHCOOX2.
    Type: Application
    Filed: February 5, 2015
    Publication date: June 22, 2017
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Tsuyoshi SEKITANI, Yuki TERAKAWA, Tomoyuki YOKOTA, Takao SOMEYA, Jonathan T. REEDER
  • Publication number: 20160347367
    Abstract: In a vehicle subframe, one of a pair of cross members includes a lower member open to a lower side of a vehicle, with an upper wall thereof having an upper wall recess depressed downward, an upper member arranged so as to cover the upper wall recess from above the vehicle and connected to the lower member, an inside space defined by the lower member and the upper member in cooperation, and a holding member connected to the lower member and the upper member in a mode in which the holding member is sandwiched between the lower member and the upper member, while penetrating the inside space in a longitudinal direction, to hold a component to be mounted.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 1, 2016
    Applicant: F-TECH INC.
    Inventor: Tomoyuki Yokota
  • Publication number: 20160347368
    Abstract: A pair of side members extends in a longitudinal direction of a vehicle in a width direction and have a plurality of coupling portions coupling with a vehicle body member of a vehicle. A pair of cross members extends in the width direction to face each other in the longitudinal direction and couple the pair of side members. A pair of coupling members is provided in the side members to couple a corresponding one of the plurality of coupling portions with the vehicle body member. A pair of support members is provided in the cross members to support correspondingly a pair of suspension arms provided in the vehicle and facing each other in the width direction. The lower parts of the support members are welded to upper walls of the coupling members and vertical walls of one of the cross members straddling the upper walls and the vertical walls.
    Type: Application
    Filed: January 27, 2015
    Publication date: December 1, 2016
    Applicants: F-TECH INC., HONDA MOTOR CO., LTD.
    Inventors: Toru Kawai, Tomoyuki Yokota, Toshiya Takahashi, Kazumi Mikami
  • Patent number: 9261135
    Abstract: A thrust race of a thrust roller bearing has a race portion and a cylindrical portion extending from the race portion in an axial direction. At a plurality of locations along a circumferential direction on the cylindrical portion, cutout portions are formed such that each of the cutout portions is recessed in the axial direction from a distal edge of the cylindrical portion toward the race portion. A protrusion is provided at a portion closer to the race portion from a bottom edge of each of the cutout portions such that the protrusion protrudes in a radial direction from the cylindrical portion toward a side away from the race portion. The protrusion serves as a race-retaining locking portion to prevent a race from moving out from a mating member on which the race is mounted.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: February 16, 2016
    Assignee: NSK LTD.
    Inventors: Hiroyuki Hara, Kazuhiko Kanou, Tomoyuki Yokota
  • Publication number: 20150328708
    Abstract: A circumferential welded joint of a line pipe is formed by butting against each other end portions of steel pipes having a yield strength according to 5L Specification of API Standards not smaller than 555 N/mm2 and welding the butted portions in a circumferential direction. A joint strength ratio ?match=(TS-w/TS-b)·(YS-w/YS-b) represented by a product of a ratio between a tensile strength TS-w of a weld metal and a tensile strength TS-b of a base material and a ratio between a yield strength YS-w of the weld metal and a yield strength YS-b of the base material, and a critical equivalent plastic strain ?p-cri [%] for ductile crack generation in a base material heat affected zone satisfy Equation (1), and the yield strengths YS-w, YS-b of the weld metal and base material satisfy Equation (2). ?match>4.85?p-cri?0.31??(1) YS-w/YS-b?1.
    Type: Application
    Filed: November 19, 2013
    Publication date: November 19, 2015
    Applicant: JFE STEEL CORPORATION
    Inventors: Takahiro SAKIMOTO, Satoshi IGI, Tomoyuki YOKOTA
  • Patent number: 8961029
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 24, 2015
    Assignee: NSK Ltd.
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Publication number: 20140169721
    Abstract: A thrust race of a thrust roller bearing has a race portion and a cylindrical portion extending from the race portion in an axial direction. At a plurality of locations along a circumferential direction on the cylindrical portion, cutout portions are formed such that each of the cutout portions is recessed in the axial direction from a distal edge of the cylindrical portion toward the race portion. A protrusion is provided at a portion closer to the race portion from a bottom edge of each of the cutout portions such that the protrusion protrudes in a radial direction from the cylindrical portion toward a side away from the race portion. The protrusion serves as a race-retaining locking portion to prevent a race from moving out from a mating member on which the race is mounted.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Applicant: NSK LTD.
    Inventors: Hiroyuki HARA, Kazuhiko KANOU, Tomoyuki YOKOTA
  • Publication number: 20130301974
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Application
    Filed: February 2, 2012
    Publication date: November 14, 2013
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Publication number: 20110158573
    Abstract: A thrust race of a thrust roller bearing has a race portion and a cylindrical portion extending from the race portion in an axial direction. At a plurality of locations along a circumferential direction on the cylindrical portion, cutout portions are formed such that each of the cutout portions is recessed in the axial direction from a distal edge of the cylindrical portion toward the race portion. A protrusion is provided at a portion closer to the race portion from a bottom edge of each of the cutout portions such that the protrusion protrudes in a radial direction from the cylindrical portion toward a side away from the race portion. The protrusion serves as a race-retaining locking portion to prevent a race from moving out from a mating member on which the race is mounted.
    Type: Application
    Filed: February 24, 2010
    Publication date: June 30, 2011
    Applicant: NSK LTD.
    Inventors: Hiroyuki Hara, Kazuhiko Kanou, Tomoyuki Yokota, Tetsuya Takahashi