Patents by Inventor Shinji Saito

Shinji Saito 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: 20230094444
    Abstract: A method for producing an electrode material for a lithium-ion secondary battery. The method includes the following steps: (a) mixing components of a basic ingredient or active substance of electrode material and a conductive carbon material to obtain a conductive carbon material-composited material; (b) mixing the conductive carbon material-composited material and a surface layer-forming material; an (c) burning the mixture obtained at step (b) to obtain the electrode material. Also, a lithium-ion secondary battery including an electrode which includes the material.
    Type: Application
    Filed: November 28, 2022
    Publication date: March 30, 2023
    Applicant: HYDRO-QUÉBEC
    Inventors: Vincent GARIEPY, Abdelbast GUERFI, Kazuma Hanai, Pierre HOVINGTON, Shinji Saito, Takehiko Sawai, Kazunori Urao, Karim ZAGHIB
  • Publication number: 20230070461
    Abstract: A surface-emitting semiconductor light-emitting device includes a semiconductor substrate; a first semiconductor layer on a front surface of the semiconductor substrate, an active layer on the first semiconductor layer; a photonic crystal layer on the active layer, a second semiconductor layer on the photonic crystal layer, a first electrode on the second semiconductor layer; and a second electrode on a back surface of the semiconductor substrate. The photonic crystal layer includes a plurality of protrusions arranged along an upper surface of the active layer. The second electrode includes a planar contact portion contacting the back surface of the semiconductor substrate, and at least one fine wire contact portion extending into a surface-emitting region in the back surface of the semiconductor substrate. The light radiated from the active layer is externally emitted from the surface-emitting region. The fine wire contact portion is arranged in the surface-emitting region with rotationally asymmetric.
    Type: Application
    Filed: March 3, 2022
    Publication date: March 9, 2023
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Rei HASHIMOTO, Hiroshi OHNO, Shinji SAITO, Tsutomu KAKUNO, Kei KANEKO
  • Publication number: 20230063072
    Abstract: An analysis device includes a substrate including a first surface, and a second surface positioned at a side opposite to the first surface; a light source part located at the first surface of the substrate, the light source part including a quantum cascade laser; a light detector located at the first surface of the substrate; and a wiring part located at the first surface of the substrate, the wiring part being electrically connected with the light source part and the light detector.
    Type: Application
    Filed: February 15, 2022
    Publication date: March 2, 2023
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji SAITO, Yoichiro KURITA, Rei HASHIMOTO, Kei KANEKO, Takayoshi FUJII
  • Publication number: 20230027967
    Abstract: A surface-emitting semiconductor light-emitting device includes a first semiconductor layers, an active layer on the first semiconductor layer, a photonic crystal layer on the active layer and a second semiconductor layer on the photonic crystal layer. The photonic crystal layer include first protrusions in a first region and second protrusions in a second region. A spacing of adjacent first protrusions is greater than a spacing of adjacent second protrusions. The second semiconductor layer includes a first layer and a second layer on the first layer. The first layer covers first and second protrusions so that a first space remains between the adjacent first protrusions. The first layer includes a first portion provided between the adjacent second protrusions. The second layer includes a second portion provided between the adjacent first protrusions. The first space between the adjacent first protrusions is filled with the second portion of the second layer.
    Type: Application
    Filed: February 28, 2022
    Publication date: January 26, 2023
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kei KANEKO, Tsutomu KAKUNO, Rei HASHIMOTO, Shinji SAITO
  • Patent number: 11545668
    Abstract: A method for producing an electrode material for a lithium-ion secondary battery. The method includes the following steps: (a) mixing components of a basic ingredient or active substance of electrode material and a conductive carbon material to obtain a conductive carbon material-composited material; (b) mixing the conductive carbon material-composited material and a surface layer-forming material; an (c) burning the mixture obtained at step (b) to obtain the electrode material. Also, a lithium-ion secondary battery including an electrode which comprises the material.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: January 3, 2023
    Assignee: HYDRO-QUEBEC
    Inventors: Vincent Gariepy, Abdelbast Guerfi, Kazuma Hanai, Pierre Hovington, Shinji Saito, Takehiko Sawai, Kazunori Urao, Karim Zaghib
  • Publication number: 20220363985
    Abstract: The present embodiment provides a composition containing a rare earth complex and a fluorine-based solvent, which can also be used in a fluorescent flaw inspection method. A rare earth complex-containing composition according to the present embodiment is a rare earth complex-containing composition that contains a rare earth complex containing: a rare earth ion; two or more phosphine oxide ligands having different structures; and a ?-diketone ligand, the rare earth complex being dissolved in a fluorine-based solvent. The present embodiment also relates to a fluorescent flaw inspection method using the same.
    Type: Application
    Filed: March 15, 2022
    Publication date: November 17, 2022
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroki IWANAGA, Shinji SAITO, Rei HASHIMOTO, Toshitake KITAGAWA, Kei KANEKO, Tsutomu KAKUNO
  • Patent number: 11435282
    Abstract: According to one embodiment, a gas analysis device includes: a base including a concave portion; a window includes a first film and a second film; an optical part that is located at a side of the window opposite to the base side and includes a light projector and a light receiver; and an optical path length controller that is located between the base and the window and has a controllable thickness. The concave portion includes a first sidewall that is oblique to a surface of the base, and a second sidewall that is oblique to the surface of the base. An oblique direction of the second sidewall is opposite to an oblique direction of the first sidewall. The light projector is configured to irradiate light toward the first sidewall. The light receiver is configured to convert light reflected by the second sidewall.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: September 6, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji Saito, Tsutomu Kakuno, Rei Hashimoto, Kei Kaneko
  • Publication number: 20220271508
    Abstract: A surface light-emission type semiconductor light-emitting device includes a first semiconductor layer; a light-emitting layer provided on the first semiconductor layer; a second semiconductor layer provided on the light-emitting layer; an uneven structure provided on the second semiconductor layer, the uneven structure including a protrusion and a recess next to the protrusion; a first metal layer covering the uneven structure; and a second metal layer provided between the uneven structure and the first metal layer. The second metal layer is provided on one of a bottom surface of the recess, an upper surface of the protrusion, or a side surface of the protrusion. The second metal layer has a reflectance for light radiated from the light-emitting layer, which is less than a reflectance of the first metal layer for the light.
    Type: Application
    Filed: September 2, 2021
    Publication date: August 25, 2022
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Rei HASHIMOTO, Tsutomu KAKUNO, Kei KANEKO, Shinji SAITO
  • Publication number: 20220105984
    Abstract: A drive assist apparatus includes a surrounding situation recognition device, a surrounding situation determination processor, a steering-wheel holding state recognizer, a steering-wheel holding state determination processor, and a traveling control device. The surrounding situation recognition device recognizes a surrounding situation of a first vehicle to be applied with the apparatus. The surrounding situation determination processor determines the surrounding situation based on a recognition result of the surrounding situation recognition device. The steering-wheel holding state recognizer recognizes a steering-wheel holding state. The steering-wheel holding state determination processor determines the steering-wheel holding state on the basis of a recognition result of the steering-wheel holding state recognizer.
    Type: Application
    Filed: October 4, 2021
    Publication date: April 7, 2022
    Applicant: SUBARU CORPORATION
    Inventors: Hiroshi KOJO, Yuki AOYAMA, Shinji SAITO, Takashi OMIKAWA
  • Publication number: 20220057319
    Abstract: According to one embodiment, a gas analysis device includes: a base including a concave portion; a window includes a first film and a second film; an optical part that is located at a side of the window opposite to the base side and includes a light projector and a light receiver; and an optical path length controller that is located between the base and the window and has a controllable thickness. The concave portion includes a first sidewall that is oblique to a surface of the base, and a second sidewall that is oblique to the surface of the base. An oblique direction of the second sidewall is opposite to an oblique direction of the first sidewall. The light projector is configured to irradiate light toward the first sidewall. The light receiver is configured to convert light reflected by the second sidewall.
    Type: Application
    Filed: April 30, 2021
    Publication date: February 24, 2022
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji SAITO, Tsutomu KAKUNO, Rei HASHIMOTO, Kei KANEKO
  • Patent number: 11258233
    Abstract: A quantum cascade laser has an active layer, a first and second cladding layer, and an optical guide layer. The active layer has a plurality of injection quantum well regions and a plurality of light-emitting quantum well regions. The each of the injection quantum well regions and the each of the light-emitting quantum well regions are alternatively stacked. The first and second cladding layers are provided to interpose the active layer from both sides, and have a refractive index lower than an effective refractive index of the each of the light-emitting quantum well regions. The optical guide layer is disposed to divide the active layer into two parts. The optical guide layer has a refractive index higher than the effective refractive index of the each of the light-emitting quantum well regions, and has a thickness greater than the thickness of all well layers of quantum well layers.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: February 22, 2022
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinji Saito, Tsutomu Kakuno, Rei Hashimoto, Kei Kaneko
  • Publication number: 20210399526
    Abstract: According to one embodiment, a surface-emitting quantum cascade laser includes a substrate; a mesa portion of a semiconductor stacked body located on the substrate, and a reflective film located at a sidewall of the mesa portion. The mesa portion includes a light-emitting layer emitting light due to an intersubband transition of a carrier, and a photonic crystal layer including a two-dimensional diffraction grating.
    Type: Application
    Filed: April 28, 2021
    Publication date: December 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Rei HASHIMOTO, Tsutomu KAKUNO, Kei KANEKO, Shinji SAITO
  • Patent number: 11205887
    Abstract: A quantum cascade laser of an embodiment includes a semiconductor stacked body in which a ridge waveguide is provided. The semiconductor stacked body includes an active layer including a quantum well region including a layer including Al; and the active layer emits laser light. The layer that includes Al includes first regions, and a second region interposed between the first regions; the first region includes Al oxide and reaches a prescribed depth inward from an outer edge of the active layer along a direction parallel to a surface of the active layer in a cross section orthogonal to the optical axis; and the second region does not include Al oxide.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: December 21, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Rei Hashimoto, Shinji Saito, Tomohiro Takase, Tsutomu Kakuno, Yuichiro Yamamoto, Kei Kaneko
  • Patent number: 11171079
    Abstract: A semiconductor device includes a substrate including wiring at a surface thereof, a semiconductor element on a surface of the substrate, a first solder resist on the wiring, a bonding wire connecting the wiring and the semiconductor element, and a second solder resist. The first solder resist has an opening region at which a part of the wiring is non-covered by the first solder resist, and the bonding wire connects the wiring and the semiconductor element in the opening region. The second solder resist at least partially covers the non-covered part of the wiring in the opening region.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 9, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Shinji Saito, Yoshitaka Ono
  • Publication number: 20210280922
    Abstract: The present invention provides a lithium secondary battery for an ISS which can be discharged at not less than 20 ItA when temperature is ?30 degrees centigrade and can be charged at not less than 50 ItA. The positive electrode material consists of a mixture of lithium-containing metal phosphate compound particles whose surfaces are coated with an amorphous carbon material and a conductive carbon material, in which atoms of the surface carbon materials are chemically bonded to one another. The negative electrode material contains at least one kind of particles selected from among graphite particles whose surfaces are coated with an amorphous carbon material, having a specific surface area of not less than 6 m2/g and soft carbon particles. A mixed electrolyte contains lithium hexafluorophosphate and lithium bis fluorosulfonyl imide.
    Type: Application
    Filed: May 18, 2021
    Publication date: September 9, 2021
    Inventors: Takehiko SAWAI, Shinji SAITO, Kazunori URAO
  • Patent number: 11114821
    Abstract: A semiconductor laser wafer includes a substrate, a first semiconductor layer, an active layer, a second semiconductor layer, and a composition evaluation layer. The active layer is provided on the first semiconductor layer; multiple periods of pairs of a light-emitting multi-quantum well region and an injection multi-quantum well region are stacked in the active layer; the light-emitting multi-quantum well region is made of a first compound semiconductor and a second compound semiconductor. The second semiconductor layer is provided on the active layer. The composition evaluation layer is provided above the active layer and includes a first film and a second film; the first film is made of the first compound semiconductor and has a first thickness; and the second film is made of the second compound semiconductor and has a second thickness.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: September 7, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kei Kaneko, Shinji Saito, Rei Hashimoto, Tsutomu Kakuno, Yuichiro Yamamoto, Tomohiro Takase
  • Publication number: 20210091540
    Abstract: A quantum cascade laser includes light-emitting quantum well layers configured to emit infrared laser light by an intersubband transition; and injection quantum well layers configured to relax carrier energy. The light-emitting quantum well layers and the injection quantum well layers are stacked alternately. The injection quantum well layers relax the energy of carriers injected from the light-emitting quantum well layers, respectively. The light-emitting quantum well layers and the injection quantum well layers including barrier layers. At least one barrier layer includes first and second regions of a first ternary compound semiconductor, and a binary compound semiconductor thin film. The binary compound semiconductor thin film is provided between the first and second regions. The first ternary compound semiconductor includes Group III atoms and a Group V atom. The binary compound semiconductor thin film includes one Group III atom of the first ternary compound semiconductor and the Group V atom.
    Type: Application
    Filed: June 11, 2020
    Publication date: March 25, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shinji SAITO, Kei KANEKO, Rei HASHIMOTO, Tsutomu KAKUNO
  • Patent number: 10944107
    Abstract: A positive-electrode material for a lithium secondary battery is provided. The material includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material is provided.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: March 9, 2021
    Assignee: HYDRO-QUÉBEC
    Inventors: Karim Zaghib, Abdelbast Guerfi, Pierre Hovington, Takehiko Sawai, Shinji Saito, Kazunori Urao
  • Publication number: 20210066718
    Abstract: A positive-electrode material for a lithium secondary battery is provided. The material includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material provided as a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material is provided.
    Type: Application
    Filed: November 12, 2020
    Publication date: March 4, 2021
    Applicants: HYDRO-QUÉBEC, SEI Corporation
    Inventors: Karim ZAGHIB, Abdelbast GUERFI, Pierre HOVINGTON, Takehiko SAWAI, Shinji SAITO, Kazunori URAO
  • Patent number: RE49319
    Abstract: A lithium-ion secondary battery including positive and negative electrodes, a separator element, an electrical conductor element and a binder, wherein the positive electrode includes a lithium-containing metal phosphate compound coated with a carbon material having at least one phase selected from a graphene phase and an amorphous phase, and further includes carbon black and a fibrous carbon material and wherein the negative-electrode material includes a graphite carbon material having at least one carbon phase selected from a graphene phase and an amorphous phase, and further includes carbon black and a fibrous carbon material, and wherein the binder includes a water-soluble synthetic resin or a water-dispersible synthetic resin. The most preferred positive electrode includes LiFePO4, The most preferred negative electrode includes artificial graphite or graphitazable powder. The most preferred binder is carboxyl methyl cellulose further including a surface active agent.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: November 29, 2022
    Assignee: HYDRO-QUEBEC
    Inventors: Karim Zaghib, Shinji Saito, Abdelbast Guerfi, Takehiko Sawai, Kazunori Urao, Jun Nakagawa, Francis Barray, Joel Frechette