Patents by Inventor Yutaka Arai

Yutaka Arai 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: 11148195
    Abstract: A laminate includes a base substrate, and a coating layer formed on the base substrate. The coating layer includes a copper alloy portions derived from precipitation-hardening copper alloy particles and hard particle portions which are harder than the copper alloy portions, the hard particle portions are derived from hard particles, and the parts bond with each other via an interface. Each of the hard particle portions has a non-spherical shape. A sliding member includes the laminate in at least one sliding portion. A method for manufacturing a laminate includes a step of spraying a mixture in a non-molten state including precipitation-hardening copper alloy particles and hard particles having a non-spherical shape and being harder than the copper alloy particles onto a base substrate, to form a coating layer on the base substrate.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: October 19, 2021
    Assignees: NISSAN MOTOR CO., LTD., FUKUDA METAL FOIL & POWDER CO., LTD.
    Inventors: Yoshinori Izawa, Junichi Arai, Yutaka Mabuchi, Katsunori Otobe, Shinichi Nishimura
  • Publication number: 20210293158
    Abstract: A sliding member of the present invention includes a coating on a base material. The coating contains hard metal particles and corrosion-resistant metal particles that have hardness lower than that of the hard metal particles. The hard metal particles contain particles that have at least Vickers hardness of 600 Hv or higher. The corrosion-resistant metal particles are made of at least one kind of metal selected from the group consisting of copper (Cu), cobalt (Co), chromium (Cr), and nickel (Ni), or are made of an alloy containing said metal. The coating has a cross section in which the hard metal particles are dispersed in an island manner in a particle aggregate of the corrosion-resistant metal particles and in which an area ratio of the corrosion-resistant metal particles is 30% or larger. Thus, corrosion of the hard metal particles in the coating is prevented, whereby the sliding member maintains wear resistance for a long time.
    Type: Application
    Filed: July 19, 2018
    Publication date: September 23, 2021
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yoshinori IZAWA, Yutaka MABUCHI, Akinobu ITOU, Junichi ARAI, Misao MOGAMI, Masanao HARADA, Moriyuki NOGAMI
  • Publication number: 20210291263
    Abstract: A laminate includes a base substrate, and a coating layer formed on the base substrate. The coating layer includes a copper alloy portions derived from precipitation-hardening copper alloy particles and hard particle portions which are harder than the copper alloy portions, the hard particle portions are derived from hard particles, and the parts bond with each other via an interface. Each of the hard particle portions has a non-spherical shape. A sliding member includes the laminate in at least one sliding portion. A method for manufacturing a laminate includes a step of spraying a mixture in a non-molten state including precipitation-hardening copper alloy particles and hard particles having a non-spherical shape and being harder than the copper alloy particles onto a base substrate, to form a coating layer on the base substrate.
    Type: Application
    Filed: June 3, 2021
    Publication date: September 23, 2021
    Applicants: NISSAN MOTOR CO., LTD., FUKUDA METAL FOIL & POWDER CO., LTD.
    Inventors: Yoshinori IZAWA, Junichi ARAI, Yutaka MABUCHI, Katsunori OTOBE, Shinichi NISHIMURA
  • Patent number: 11059949
    Abstract: To provide prepreg having high thermostability and a molded body (fiber reinforced composite) obtained from the prepreg, the prepreg is formed by impregnating a reinforced fiber having an elastic modulus of 100 to 900 GPa with an epoxy resin composition including the following Components A to D so as to have a resin content within a range of 25 to 50 mass %: Component A: an epoxy resin having an oxazolidone ring structure in a molecule thereof; Component B: an epoxy resin that is liquid at 30° C.; Component C: a diblock copolymer having a B-M structure, wherein M is a block including at least 50 mass % of methyl methacrylate, B is a block immiscible with the epoxy resins and the block M, a glass transition temperature of the block B being 20° C. or lower; and Component D: dicyandiamide, or an amine curing agent that is a derivative of dicyandiamide.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: July 13, 2021
    Assignees: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD., Mazda Motor Corporation, Nippon Graphite Fiber Corporation
    Inventors: Koichi Hattori, Yutaka Arai, Masaki Shimada, Tetsuya Sugiyama, Katsuya Himuro, Masanori Honda, Kenji Nishida, Hironobu Takahama
  • Patent number: 10974491
    Abstract: One end portion of a resin tube kept in a diameter expanded state by a plurality of diameter expanding claws is disengaged from the diameter expanding claws and is shifted onto an outer peripheral surface of a die by applying a pressing force toward the other end portion of the resin tube to an end surface of the one end portion of the resin tube.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 13, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Suzuki, Yutaka Arai, Masaaki Takahashi, Shigeaki Takada, Akeshi Asaka, Yukio Sasame, Masayuki Onuma
  • Patent number: 10809654
    Abstract: A pressure roller, and the pressure roller to be used in a fixing apparatus of in an image forming apparatus, the fixing apparatus configured to heat a toner image formed on a recording material and fix the toner image on the recording material, the pressure roller including a first elastic layer, and a second elastic layer provided on an outside of the first elastic layer, wherein a thermal conductivity of the first elastic layer is higher than a thermal conductivity of the second elastic layer, and wherein the first elastic layer contains a plurality of void portions, hole pathway portions joining the plurality of void portions to each other, and a needle-shaped high thermal conductive filler.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: October 20, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Sho Taguchi, Naofumi Murata, Katsuhisa Matsunaka, Yutaka Arai
  • Patent number: 10635873
    Abstract: A video signal monitoring method includes detecting at least one of luminance or chromaticity in a predetermined region among regions of a video displayed on a display device; converting the at least one of detected luminance or chromaticity into video identification information for identifying the video; and outputting the video identification information and a time at which the video was displayed.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: April 28, 2020
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Yoshinori Moriki, Yutaka Arai
  • Publication number: 20200102436
    Abstract: To provide prepreg having high thermostability and a molded body (fiber reinforced composite) obtained from the prepreg, the prepreg is formed by impregnating a reinforced fiber having an elastic modulus of 100 to 900 GPa with an epoxy resin composition including the following Components A to D so as to have a resin content within a range of 25 to 50 mass %: Component A: an epoxy resin having an oxazolidone ring structure in a molecule thereof; Component B: an epoxy resin that is liquid at 30° C.; Component C: a diblock copolymer having a B-M structure, wherein M is a block including at least 50 mass % of methyl methacrylate, B is a block immiscible with the epoxy resins and the block M, a glass transition temperature of the block B being 20° C. or lower; and Component D: dicyandiamide, or an amine curing agent that is a derivative of dicyandiamide.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 2, 2020
    Inventors: Koichi Hattori, Yutaka Arai, Masaki Shimada, Tetsuya Sugiyama, Katsuya Himuro, Masanori Honda, Kenji Nishida, Hironobu Takahama
  • Publication number: 20200073295
    Abstract: A pressure roller, and the pressure roller to be used in a fixing apparatus of in an image forming apparatus, the fixing apparatus configured to heat a toner image formed on a recording material and fix the toner image on the recording material, the pressure roller including a first elastic layer, and a second elastic layer provided on an outside of the first elastic layer, wherein a thermal conductivity of the first elastic layer is higher than a thermal conductivity of the second elastic layer, and wherein the first elastic layer contains a plurality of void portions, hole pathway portions joining the plurality of void portions to each other, and a needle-shaped high thermal conductive filler.
    Type: Application
    Filed: August 13, 2019
    Publication date: March 5, 2020
    Inventors: Sho Taguchi, Naofumi Murata, Katsuhisa Matsunaka, Yutaka Arai
  • Patent number: 10545440
    Abstract: Provided is a pressure roller for an image heating device that forms a nip part together with a heating member, the pressure roller including at least a mandrel, a first elastic layer, and a second elastic layer provided between the mandrel and the first elastic layer, wherein the first elastic layer has open-cell voids, is made of rubber, and has a thickness of at least 50 ?m and less than 500 ?m, and the second elastic layer is made of solid rubber.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shoichiro Ikegami, Naofumi Murata, Yutaka Arai, Jun Miura
  • Patent number: 10534297
    Abstract: Provided is an electrophotographic rotatable pressing member having further durability. The electrophotographic rotatable pressing member includes: a substrate; and an elastic layer formed on the substrate, the elastic layer containing a silicone rubber and a needle-shaped filler dispersed in the silicone rubber and having hollow parts, wherein, when cutting the elastic layer along a cross section including a center axis of the substrate in a longitudinal direction of the electrophotographic rotatable pressing member, and a total of each sectional area of the hollow parts in a unit area A2 of a cross-sectional surface is defined as A1, a standard deviation of an area ratio A1/A2 is 0.08 or less.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: January 14, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jun Miura, Yutaka Arai, Takeshi Suzuki, Akeshi Asaka, Shigeaki Takada, Masaaki Takahashi, Yo Imaizumi
  • Patent number: 10460646
    Abstract: A display system that can solve the problem of an inadequate band in a connector or transmission path and that enables processing of a high-resolution image signal, includes a display device and an electronic apparatus that is electrically connected to the display device via a connector. The electronic apparatus receives or generates an original image signal indicating an original image that is to be displayed and supplies a plurality of divided image signals each indicating a respective image of a plurality of partial images into which the original image has been divided. The display device displays the original image on the basis of a combined image signal into which the plurality of partial image signals supplied from the electronic apparatus have been combined.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 29, 2019
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Yutaka Arai
  • Publication number: 20190278202
    Abstract: Provided is an electrophotographic rotatable pressing member having further durability. The electrophotographic rotatable pressing member includes: a substrate; and an elastic layer formed on the substrate, the elastic layer containing a silicone rubber and a needle-shaped filler dispersed in the silicone rubber and having hollow parts, wherein, when cutting the elastic layer along a cross section including a center axis of the substrate in a longitudinal direction of the electrophotographic rotatable pressing member, and a total of each sectional area of the hollow parts in a unit area A2 of a cross-sectional surface is defined as A1, a standard deviation of an area ratio A1/A2 is 0.08 or less.
    Type: Application
    Filed: May 30, 2019
    Publication date: September 12, 2019
    Inventors: Jun Miura, Yutaka Arai, Takeshi Suzuki, Akeshi Asaka, Shigeaki Takada, Masaaki Takahashi, Yo Imaizumi
  • Patent number: 10353330
    Abstract: Provided is an electrophotographic rotatable pressing member having further durability. The electrophotographic rotatable pressing member includes: a substrate; and an elastic layer formed on the substrate, the elastic layer containing a silicone rubber and a needle-shaped filler dispersed in the silicone rubber and having hollow parts, wherein, when cutting the elastic layer along a cross section including a center axis of the substrate in a longitudinal direction of the electrophotographic rotatable pressing member, and a total of each sectional area of the hollow parts in a unit area A2 of a cross-sectional surface is defined as A1, a standard deviation of an area ratio A1/A2 is 0.08 or less.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: July 16, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jun Miura, Yutaka Arai, Takeshi Suzuki, Akeshi Asaka, Shigeaki Takada, Masaaki Takahashi, Yo Imaizumi
  • Patent number: 10281858
    Abstract: A roller usable in an image fixing device for an electrophotographic image forming apparatus includes a first elastic layer; a second elastic layer provided closer to a center of the roller than the first elastic layer, the second elastic layer having a thermal conductivity in a thickness direction higher than that of the first elastic layer; a third elastic layer provided between the first elastic layer and the second elastic layer, wherein an indentation elastic modulus EIT1 of the first elastic layer, an indentation elastic modulus EIT2 of the second elastic layer, and an indentation elastic modulus of the third elastic layer satisfy E1T1<E1T3<E1T2.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 7, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naofumi Murata, Shoichiro Ikegami, Yutaka Arai, Jun Miura
  • Patent number: 10261429
    Abstract: Provided is an electrophotographic member capable of reducing a rise time of a fixing apparatus and preventing occurrence of a defective image due to an electrostatic offset. The electrophotographic member has a substrate, an elastic layer, and a surface layer containing a fluororesin, in this order, the elastic layer has a communication hole of which pores are communicated with each other, and an ionic conductive agent is adhered to an inner wall of the communication hole.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: April 16, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akeshi Asaka, Shigeaki Takada, Akiyoshi Shinagawa, Koichi Kakubari, Hiroto Ito, Yutaka Arai
  • Publication number: 20190108371
    Abstract: A video signal monitoring method includes detecting at least one of luminance or chromaticity in a predetermined region among regions of a video displayed on a display device; converting the at least one of detected luminance or chromaticity into video identification information for identifying the video; and outputting the video identification information and a time at which the video was displayed.
    Type: Application
    Filed: December 10, 2018
    Publication date: April 11, 2019
    Inventors: Yoshinori Moriki, Yutaka Arai
  • Publication number: 20190105888
    Abstract: One end portion of a resin tube kept in a diameter expanded state by a plurality of diameter expanding claws is disengaged from the diameter expanding claws and is shifted onto an outer peripheral surface of a die by applying a pressing force toward the other end portion of the resin tube to an end surface of the one end portion of the resin tube.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 11, 2019
    Inventors: Takeshi Suzuki, Yutaka Arai, Masaaki Takahashi, Shigeaki Takada, Akeshi Asaka, Yukio Sasame, Masayuki Onuma
  • Publication number: 20190033762
    Abstract: Provided is a pressure roller for an image heating device that forms a nip part together with a heating member, the pressure roller including at least a mandrel, a first elastic layer, and a second elastic layer provided between the mandrel and the first elastic layer, wherein the first elastic layer has open-cell voids, is made of rubber, and has a thickness of at least 50 ?m and less than 500 ?m, and the second elastic layer is made of solid rubber.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 31, 2019
    Inventors: Shoichiro Ikegami, Naofumi Murata, Yutaka Arai, Jun Miura
  • Patent number: 10189233
    Abstract: One end portion of a resin tube kept in a diameter expanded state by a plurality of diameter expanding claws is disengaged from the diameter expanding claws and is shifted onto an outer peripheral surface of a die by applying a pressing force toward the other end portion of the resin tube to an end surface of the one end portion of the resin tube.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: January 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Suzuki, Yutaka Arai, Masaaki Takahashi, Shigeaki Takada, Akeshi Asaka, Yukio Sasame, Masayuki Onuma