Patents by Inventor Ryota Fukumoto

Ryota Fukumoto 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: 20240106221
    Abstract: The heat shrinkable tube according to the present disclosure contains an ethylene-tetrafluoroethylene copolymer as a main component. The heat shrinkable tube has a melting point of 210° C. to 250° C. and a storage elastic modulus of 0.8 MPa to 2.8 MPa at 250° C. to 280° C.
    Type: Application
    Filed: January 21, 2022
    Publication date: March 28, 2024
    Applicants: SUMITOMO ELECTRIC FINE POLYMER, INC., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Keiji ISHIBASHI, Seiichirou MURATA, Ryota FUKUMOTO
  • Publication number: 20240094493
    Abstract: An optical cable according to an embodiment of the present disclosure is an optical cable for installation in a microduct, the optical cable including one or more optical-fiber core wires, and a sheath layer covering an outer peripheral side of the one or more optical-fiber core wires. The sheath layer has a density of 2.0 g/cm3 or less. The sheath layer contains an olefin-based resin, a silicone, and a non-halogen flame retardant. A mass ratio of the non-halogen flame retardant to the olefin-based resin is 0.90 to 2.00. A mass ratio of the silicone to the olefin-based resin is 0.005 to 0.100. The olefin-based resin contains a polyethylene, and an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer. The silicone has a weight-average molecular weight of 50,000 to 1,000,000.
    Type: Application
    Filed: August 25, 2023
    Publication date: March 21, 2024
    Inventors: Nayu YANAGAWA, Ryota FUKUMOTO, Taro FUJITA, Fumiaki SATO, Toyoaki KIMURA, Yohei SUZUKI
  • Patent number: 11841632
    Abstract: A holding member includes a first side wall portion and a second side wall portion, and a part of a surface of a substrate on a side opposite from a mounting surface and a holding member are fixed to each other by an adhesive. In the first side wall portion, an inserting hole is disposed opposing a corner portion as of the substrate in a widthwise direction of the substrate and also, in the second side wall portion, another inserting hole is disposed opposing another corner portion of the substrate.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: December 12, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiki Momoka, Hitoshi Iwai, Shinichiro Hosoi, Takehiro Ishidate, Daisuke Aruga, Ryota Fukumoto
  • Publication number: 20230273382
    Abstract: An optical cable according to an embodiment of present disclosure includes following features. Asheath layer contains a liquid crystal polymer forming a liquid crystal phase and an olefin resin serving as a principal component, a content of the liquid crystal polymer is 2 mass% to 30 mass% relative to the sheath layer, a major axis of the liquid crystal phase is oriented in a longitudinal direction of the sheath layer, and in a region from a surface of the sheath layer to a depth of 5% of a thickness of the sheath layer, an average ratio of a length of the liquid crystal phase in a major axis direction to a length of the liquid crystal phase in a minor axis direction is 2.0 or more.
    Type: Application
    Filed: August 5, 2021
    Publication date: August 31, 2023
    Inventors: Ryota FUKUMOTO, Nayu YANAGAWA, Taro FUJITA, Yohei SUZUKI, Fumiaki SATO
  • Publication number: 20230236522
    Abstract: An image forming apparatus includes a photosensitive member that is rotatable, a substrate, a lens array, a holder, and a conductive member provided on the holder. The substrate includes a plurality of light-emitting elements, a driver integrated circuit (IC), and a wiring pattern. The plurality of light-emitting elements is arrayed in a rotational axis direction of the photosensitive member to emit light to which a surface of the photosensitive member is exposed. The driver IC drives the plurality of light-emitting elements. The wiring pattern includes a supply line that supplies power to the driver IC and a ground wire that grounds the driver IC. The lens array collects the light emitted from the plurality of light-emitting elements on the photosensitive member. The holder holds the substrate and the lens array, is grounded, and is made of metal. The conductive member electrically connects the holder and the ground wire.
    Type: Application
    Filed: April 3, 2023
    Publication date: July 27, 2023
    Inventor: Ryota Fukumoto
  • Publication number: 20230142376
    Abstract: An optical fiber cable includes a plurality of optical fibers, a tensile strength member set that is disposed along the plurality of optical fibers in a longitudinal direction of the optical fiber cable, and a sheath that covers the plurality of optical fibers from outside and encloses the tensile strength member set in the sheath. In the optical fiber cable, at least four tensile strength member sets are embedded in the sheath in a state where the four tensile strength member sets are apart from each other in a radial direction of the optical fiber cable, the sheath includes a flame-retardant inorganic substance and a release agent, and a distance from one of the four tensile strength member sets to a surface layer of the sheath is 0.5 mm or more.
    Type: Application
    Filed: June 28, 2021
    Publication date: May 11, 2023
    Inventors: Fumiaki SATO, Yohei SUZUKI, Kenta TSUCHIYA, Yuuki SHIMODA, Taro FUJITA, Ryota FUKUMOTO
  • Patent number: 11644764
    Abstract: An image forming apparatus includes a photosensitive member that is rotatable, a substrate, a lens array, a holder, and a conductive member provided on the holder. The substrate includes a plurality of light-emitting elements, a driver integrated circuit (IC), and a wiring pattern. The plurality of light-emitting elements is arrayed in a rotational axis direction of the photosensitive member to emit light to which a surface of the photosensitive member is exposed. The driver IC drives the plurality of light-emitting elements. The wiring pattern includes a supply line that supplies power to the driver IC and a ground wire that grounds the driver IC. The lens array collects the light emitted from the plurality of light-emitting elements on the photosensitive member. The holder holds the substrate and the lens array, is grounded, and is made of metal. The conductive member electrically connects the holder and the ground wire.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: May 9, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryota Fukumoto
  • Publication number: 20220406865
    Abstract: A potential of a gate of a driving transistor is fixed, and the driving transistor is operated in a saturation region, so that a current is supplied thereto anytime. A current control transistor operating in a linear region is disposed serially with the driving transistor, and a video signal for transmitting a signal of emission or non-emission of the pixel is input to a gate of the current control transistor via a switching transistor.
    Type: Application
    Filed: August 23, 2022
    Publication date: December 22, 2022
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Mitsuaki OSAME, Aya ANZAI, Yu YAMAZAKI, Ryota FUKUMOTO
  • Publication number: 20220382182
    Abstract: An image forming apparatus includes a photosensitive member that is rotatable, a substrate, a lens array, a holder, and a conductive member provided on the holder. The substrate includes a plurality of light-emitting elements, a driver integrated circuit (IC), and a wiring pattern. The plurality of light-emitting elements is arrayed in a rotational axis direction of the photosensitive member to emit light to which a surface of the photosensitive member is exposed. The driver IC drives the plurality of light-emitting elements. The wiring pattern includes a supply line that supplies power to the driver IC and a ground wire that grounds the driver IC. The lens array collects the light emitted from the plurality of light-emitting elements on the photosensitive member. The holder holds the substrate and the lens array, is grounded, and is made of metal. The conductive member electrically connects the holder and the ground wire.
    Type: Application
    Filed: May 9, 2022
    Publication date: December 1, 2022
    Inventor: Ryota Fukumoto
  • Patent number: 11430845
    Abstract: A potential of a gate of a driving transistor is fixed, and the driving transistor is operated in a saturation region, so that a current is supplied thereto anytime. A current control transistor operating in a linear region is disposed serially with the driving transistor, and a video signal for transmitting a signal of emission or non-emission of the pixel is input to a gate of the current control transistor via a switching transistor.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: August 30, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Mitsuaki Osame, Aya Anzai, Yu Yamazaki, Ryota Fukumoto
  • Publication number: 20220244675
    Abstract: A cleaning rod includes a rod-like member, a slidable portion which is provided on a free end side of the rod-like member with respect to a direction in which the cleaning rod is inserted and which is slidable on a light emergent surface of a lens of an image forming apparatus, and a restricting portion configured to restrict movement of the slidable portion in a direction away from the light emergent surface with respect to an optical axis direction by contacting the holder at each of free ends of opposing wall portions of a holder of the image forming apparatus from a side opposite from a side where a photosensitive member of the image forming apparatus is provided with respect to the optical axis direction in a state in which the slidable portion contacts the light emergent surface.
    Type: Application
    Filed: April 21, 2022
    Publication date: August 4, 2022
    Inventors: Yuta Okada, Shinichiro Hosoi, Takehiro Ishidate, Toshiki Momoka, Ryota Fukumoto
  • Patent number: 11378766
    Abstract: An optical fiber cable includes a plurality of intermittently connected optical fiber ribbons inside a cable sheath, in which a fibrous filler or an FRP using the fibrous filler is provided on at least one pair of diagonals of the two diagonal directions approximately orthogonal to each other inside the cable sheath. An average linear expansion coefficient of the fibrous filler at ?40° C. to +70° C. is smaller than an average linear expansion coefficient of the cable sheath at ?40° C. to +70° C.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: July 5, 2022
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Fumiaki Sato, Kuushin Ryan, Taro Fujita, Nayu Yanagawa, Ryota Fukumoto, Masakazu Takami, Yohei Suzuki
  • Patent number: 11347158
    Abstract: In a configuration in which a metal holder is supported by a resin member, the metal holder cannot be grounded, so that electricity may be discharged from the charged holder to a substrate held by the holder. The holder is provided with a pin to determine a position of the holder with respect to a photosensitive member. A conductive member that is made of metal and is grounded, is brought into contact with the pin to thereby enable the holder to be grounded through the pin.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: May 31, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Fukumoto, Shinichiro Hosoi, Takehiro Ishidate, Toshiki Momoka, Yuta Okada
  • Patent number: 11340550
    Abstract: A cleaning rod includes a rod-like member, a slidable portion which is provided on a free end side of the rod-like member with respect to a direction in which the cleaning rod is inserted and which is slidable on a light emergent surface of a lens of an image forming apparatus, and a restricting portion configured to restrict movement of the slidable portion in a direction away from the light emergent surface with respect to an optical axis direction by contacting the holder at each of free ends of opposing wall portions of a holder of the image forming apparatus from a side opposite from a side where a photosensitive member of the image forming apparatus is provided with respect to the optical axis direction in a state in which the slidable portion contacts the light emergent surface.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: May 24, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuta Okada, Shinichiro Hosoi, Takehiro Ishidate, Toshiki Momoka, Ryota Fukumoto
  • Publication number: 20220050399
    Abstract: A holding member 505 includes a first side wall portion 505a and a second side wall portion 505b, and a part of a surface 803b of a substrate 502 on a side opposite from a mounting surface 803 and a holding member 505 are fixed to each other by an adhesive. In the first side wall portion 505a, an inserting hole 801 opposing a corner portion 502 as of the substrate 502 in a widthwise direction of the substrate 502, and also, in the second side wall portion 505b, an inserting hole 801 opposing a corner portion 502bs of the substrate 502.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Toshiki Momoka, Hitoshi Iwai, Shinichiro Hosoi, Takehiro Ishidate, Daisuke Aruga, Ryota Fukumoto
  • Publication number: 20220003949
    Abstract: An optical fiber cable includes a plurality of intermittently connected optical fiber ribbons inside a cable sheath, in which a fibrous filler or an FRP using the fibrous filler is provided on at least one pair of diagonals of the two diagonal directions approximately orthogonal to each other inside the cable sheath. An average linear expansion coefficient of the fibrous filler at ?40° C. to +70° C. is smaller than an average linear expansion coefficient of the cable sheath at ?40° C. to +70° C.
    Type: Application
    Filed: November 6, 2019
    Publication date: January 6, 2022
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fumiaki SATO, Kuushin RYAN, Taro FUJITA, Nayu YANAGAWA, Ryota FUKUMOTO, Masakazu TAKAMI, Yohei SUZUKI
  • Patent number: 11067915
    Abstract: A cleaning member that is used in an image forming apparatus and that is inserted from outside the image forming apparatus, the apparatus including a holding body that holds a substrate on which light emitting elements that expose a photosensitive drum are aligned and that holds lenses, the cleaning member including a rod-shaped rhabdoid formed of resin, a cleaning portion provided in the rhabdoid to clean a light emission surface of each lens, the cleaning portion moving together with the rhabdoid inserted in the image forming apparatus and opposing the light emission surface in an optical axis direction of the lens, and a magnet provided on the rhabdoid, the magnet emitting magnetic force that generates force drawing the holding body thereto so that the cleaning portion continues to contact the light emission surface.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: July 20, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Aruga, Hitoshi Iwai, Shinichiro Hosoi, Toshiki Momoka, Takehiro Ishidate, Ryota Fukumoto
  • Publication number: 20210181669
    Abstract: A cleaning rod includes a rod-like member, a slidable portion which is provided on a free end side of the rod-like member with respect to a direction in which the cleaning rod is inserted and which is slidable on a light emergent surface of a lens of an image forming apparatus, and a restricting portion configured to restrict movement of the slidable portion in a direction away from the light emergent surface with respect to an optical axis direction by contacting the holder at each of free ends of opposing wall portions of a holder of the image forming apparatus from a side opposite from a side where a photosensitive member of the image forming apparatus is provided with respect to the optical axis direction in a state in which the slidable portion contacts the light emergent surface.
    Type: Application
    Filed: December 11, 2020
    Publication date: June 17, 2021
    Inventors: Yuta Okada, Shinichiro Hosoi, Takehiro Ishidate, Toshiki Momoka, Ryota Fukumoto
  • Publication number: 20210173324
    Abstract: In a configuration in which a metal holder is supported by a resin member, the metal holder cannot be grounded, so that electricity may be discharged from the charged holder to a substrate held by the holder. The holder is provided with a pin to determine a position of the holder with respect to a photosensitive member. A conductive member that is made of metal and is grounded, is brought into contact with the pin to thereby enable the holder to be grounded through the pin.
    Type: Application
    Filed: December 4, 2020
    Publication date: June 10, 2021
    Inventors: Ryota Fukumoto, Shinichiro Hosoi, Takehiro Ishidate, Toshiki Momoka, Yuta Okada
  • Patent number: 10840690
    Abstract: A tubular cable interconnect unit arranged on an outer periphery of a joint of a power cable, includes a tubular insulating tube, a non-ohmic resistor layer formed from a non-ohmic composition and provided on an inner peripheral surface of the insulating tube, and an inner semiconductive layer provided on the non-ohmic resistor layer, wherein the non-ohmic composition includes a base polymer including at least one of thermoplastic and rubber, and varistor grains having a non-ohmic characteristic in which a volume resistivity varies non-linearly with respect to an applied voltage, and the varistor grains have a maximum grain diameter of 30 ?m or less.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: November 17, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shuhei Yasuda, Takanori Yamazaki, Yoshiyuki Inoue, Ryota Fukumoto, Yoitsu Sekiguchi, Shoshi Katakai, Shinya Nishikawa, Hiroshi Hayami