Patents by Inventor Masahiro Adachi

Masahiro Adachi 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: 12284918
    Abstract: A thermoelectric conversion element includes a first electrode, a thermoelectric conversion material portion configured to convert heat into electricity, an intermediate layer arranged on the thermoelectric conversion material portion, a conductive bonding material arranged in between the intermediate layer and the first electrode to bond the first electrode to the intermediate layer, and a second electrode connected to the thermoelectric conversion material portion. The intermediate layer includes a first layer arranged on the thermoelectric conversion material portion and containing a dopant, and a second layer arranged on the first layer and configured to suppress diffusion of elements. The intermediate layer has an interface resistivity of not less than 0.0001 m?cm2 and not more than 0.5 m?cm2.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: April 22, 2025
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Kotaro Hirose, Masahiro Adachi, Tsunehiro Takeuchi
  • Patent number: 12201023
    Abstract: An optical sensor includes a support and a thermoelectric-conversion material section including first material layers, second material layers, and a third material layer. Each of the first material layers may have a first region including a first end portion and a second region including a second end portion. Each of the second material layers may have a third region including a third end portion and a fourth region including a fourth end portion. The first region and the second region are electrically connected to the third region and the fourth region, respectively, such that the plurality of first material layers and the plurality of second material layers are alternately connected in series to each other. The third material layer is disposed between the first region and the third region.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: January 14, 2025
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kyohei Kakuyama, Kotaro Hirose, Masahiro Adachi
  • Publication number: 20250003803
    Abstract: An optical sensor includes a support layer, a thermoelectric conversion material portion including a first material layer and a second material layer, and a light-absorbing film. The first material layer includes a first region and a second region overlapping the light-absorbing film. The second material layer includes a third region and a fourth region overlapping the light-absorbing film. The thermoelectric conversion material portion includes transition regions electrically connecting the first region and the third region, and the second region and the fourth region, respectively, and including a halogen.
    Type: Application
    Filed: March 22, 2022
    Publication date: January 2, 2025
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kyohei KAKUYAMA, Masahiro ADACHI
  • Publication number: 20240429676
    Abstract: An optical module includes a temperature buffer member having a first surface and a second surface opposite to the first surface; an optical semiconductor element that is connected to the first surface and that generates heat by itself; and a heat dissipation member connected to the second surface. The temperature buffer member is formed of a phase transformation material, a thermal conductivity of the phase transformation material changing at a phase transformation temperature.
    Type: Application
    Filed: June 14, 2024
    Publication date: December 26, 2024
    Inventors: Yasutaka MIZUNO, Tomoya SAEKI, Katsumi UESAKA, Kotaro HIROSE, Masahiro ADACHI
  • Publication number: 20240334832
    Abstract: A thermoelectric conversion element includes a first electrode, a thermoelectric conversion material portion configured to convert heat into electricity, an intermediate layer arranged on the thermoelectric conversion material portion, a conductive bonding material arranged in between the intermediate layer and the first electrode to bond the first electrode to the intermediate layer, and a second electrode connected to the thermoelectric conversion material portion. The intermediate layer includes a first layer arranged on the thermoelectric conversion material portion and containing a dopant, and a second layer arranged on the first layer and configured to suppress diffusion of elements. The intermediate layer has an interface resistivity of not less than 0.0001 m?cm2 and not more than 0.5 m?cm2.
    Type: Application
    Filed: February 25, 2022
    Publication date: October 3, 2024
    Applicants: Sumitomo Electric Industries, Ltd., Toyota School Foundation
    Inventors: Kotaro HIROSE, Masahiro ADACHI, Tsunehiro TAKEUCHI
  • Patent number: 12035629
    Abstract: A thermoelectric conversion material is represented by a composition formula Ag2S(1-x)Sex, where x has a value of greater than 0.01 and smaller than 0.6.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: July 9, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Kotaro Hirose, Masahiro Adachi, Yoshiyuki Yamamoto, Tsunehiro Takeuchi
  • Patent number: 12035630
    Abstract: A thermoelectric conversion material is represented by a composition formula Ag2-x?xS, where ? is one selected from among Ni, V, and Ti. The value of x is greater than 0 and smaller than 0.6.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: July 9, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Masahiro Adachi, Yoshiyuki Yamamoto, Tsunehiro Takeuchi
  • Patent number: 12029127
    Abstract: A thermoelectric conversion material includes a base material that is a semiconductor having Si and Ge as constituent elements, a first additive element that is different from the constituent elements, has a vacant orbital in a d or f orbital located inside an outermost shell thereof, and forms a first additional level in a forbidden band of the base material, and oxygen. The oxygen content ratio is 6 at % or less.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: July 2, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Masahiro Adachi, Yoshiyuki Yamamoto, Tsunehiro Takeuchi
  • Publication number: 20240206339
    Abstract: A thermoelectric conversion device includes a first electrode, a thermoelectric conversion material portion containing Si and Ge as constituent elements, a conductive joining member disposed in contact with the first electrode and the thermoelectric conversion material portion and joining the first electrode and the thermoelectric conversion material portion together, and a second electrode. The Si and the Ge contain amorphous phase and crystalline phase. The joining member contains at least one of Ag, Cu, Ti, and Sn or an alloy thereof as a major constituent. The thermoelectric conversion material portion includes a first layer containing the major constituent in an amount of 10 atm % or more and in contact with the joining member, and a second layer. The second layer has a degree of crystallinity of 40% by volume to 90% by volume.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 20, 2024
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kotaro HIROSE, Masahiro ADACHI
  • Patent number: 12010917
    Abstract: A thermoelectric conversion material is represented by a composition formula Ag2S(1-x)Sex. The value of x is not smaller than 0.2 and not greater than 0.95.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: June 11, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Masahiro Adachi, Yoshiyuki Yamamoto, Tsunehiro Takeuchi
  • Patent number: 12002894
    Abstract: A photosensor includes: a support; a thermoelectric conversion material section that is disposed on a first main surface of the support and that includes a plurality of first material layers each having an elongated shape, a plurality of second material layers each having electrical conductivity and an elongated shape, and an insulating film, the first material layers and the second material layers each being configured to convert thermal energy into electrical energy; a heat sink that is disposed on a second main surface of the support and along an outer edge of the support; a light-absorbing film that is disposed in a region surrounded by inner edges of the heat sink as viewed in a thickness direction of the support so as to form temperature differences on the first main surface of the support in longitudinal directions of the first material layers.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: June 4, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kotaro Hirose, Masahiro Adachi, Yoshiyuki Yamamoto, Shunsuke Fujii, Fuminori Mitsuhashi
  • Publication number: 20240147860
    Abstract: An optical sensor includes a support and a thermoelectric-conversion material section including first material layers, second material layers, and a third material layer. Each of the first material layers may have a first region including a first end portion and a second region including a second end portion. Each of the second material layers may have a third region including a third end portion and a fourth region including a fourth end portion. The first region and the second region are electrically connected to the third region and the fourth region, respectively, such that the plurality of first material layers and the plurality of second material layers are alternately connected in series to each other. The third material layer is disposed between the first region and the third region.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 2, 2024
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kyohei KAKUYAMA, Kotaro HIROSE, Masahiro ADACHI
  • Publication number: 20240138265
    Abstract: A thermoelectric conversion material includes, a base material composed of SiGe, a first additive element functioning as a dopant, a second additive element different from the first additive element, and oxygen. The second additive element includes at least one of Mg, Ca, and Ti. A content ratio of the second additive element relative to the base material is 0.5 at % to 5 at %. In a rectangular area of a section of the base material, the rectangular area being selected such that a grain boundary intersects opposite sides of the rectangular area, a distribution of the second additive element and the oxygen has a positive correlation. A correlation coefficient of the correlation is in a range of 0.2 or more and less than 1.0.
    Type: Application
    Filed: October 12, 2023
    Publication date: April 25, 2024
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kotaro HIROSE, Masahiro ADACHI
  • Publication number: 20240130238
    Abstract: An optical sensor includes a support film having a first main surface and a second main surface located opposite to the first main surface in a thickness direction; a thermoelectric-conversion material section disposed on the first main surface and including a plurality of strip-shaped first material layers formed of SiGe having p-type conductivity and configured to convert thermal energy into electric energy, and a plurality of strip-shaped second material layers formed of SiGe having n-type conductivity and configured to convert thermal energy into electric energy; a heat sink disposed on the second main surface; and a light absorbing film disposed so as to form a temperature difference in each of the first material layers in longitudinal directions and each of the second material layers in longitudinal directions and configured to convert received light into thermal energy.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 18, 2024
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kyohei KAKUYAMA, Kotaro HIROSE, Masahiro ADACHI
  • Publication number: 20240125651
    Abstract: An optical sensor includes a support layer, a thermoelectric-conversion material section disposed on the support layer and including strip-shaped p-type material layers configured to convert thermal energy into electric energy and strip-shaped n-type material lavers configured to convert thermal energy into electric energy, a heat sink, a light absorbing film, and an insulating film disposed between the thermoelectric-conversion material section and the light absorbing film. Each of the p-type material layers includes a first region overlapping the heat sink and a second region overlapping the light absorbing film. Each of the n-type material layers includes a third region overlapping the heat sink and a fourth region overlapping the light absorbing film. The p-type material layers and the n-type material layers are alternately disposed in series. The light absorbing film includes 60 mass % to 95 mass % of carbon and 5 mass % to 40 mass % of a resin.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kyohei KAKUYAMA, Kotaro HIROSE, Masahiro ADACHI
  • Patent number: 11910714
    Abstract: A thermoelectric conversion material contains a matrix composed of a semiconductor and nanoparticles disposed in the matrix, and the nanoparticles have a lattice constant distribution ?d/d of 0.0055 or more.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: February 20, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Masahiro Adachi, Makoto Kiyama, Yoshiyuki Yamamoto, Ryo Toyoshima
  • Patent number: 11898903
    Abstract: An optical sensor includes a support layer, a thermoelectric conversion material portion disposed on the support layer and including a strip-shaped first material layer that converts thermal energy into electrical energy and a strip-shaped second material layer that is electrically conductive, and a light absorbing film disposed on the thermoelectric conversion material portion to form a temperature difference in a longitudinal direction of the first material layer. The first material layer includes a first region and a second region. The second material layer includes a third region and a fourth region connected to the second region. The optical sensor further includes a first electrode electrically connected to the first region, and a second electrode disposed apart from the first electrode and electrically connected to the third region. The first material layer has a width, perpendicular to the longitudinal direction, of 0.1 ?m or more.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: February 13, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kotaro Hirose, Masahiro Adachi, Yoshiyuki Yamamoto
  • Patent number: 11884546
    Abstract: A multilayer body includes a base portion and a graphene film. In an ion mass distribution versus depth of the multilayer body determined by time-of-flight secondary ion mass spectrometry, detection intensities of C6 ions have a maximum value at a depth of greater than 0 nm and 2.5 nm or less from an exposed surface. Detection intensities of C3 ions have a maximum value at a depth of greater than 0 nm and 3.0 nm or less from the exposed surface. Detection intensities of SiC4 ions have a maximum value at a depth of 0.5 nm or greater and 5.0 nm or less from the exposed surface. Detection intensities of SiC ions have a maximum value at a depth of 0.5 nm or greater and 10.0 nm or less from the exposed surface. Detection intensities of Si2 ions have a maximum value at a depth of 0.5 nm or greater and 10.0 nm or less from the exposed surface.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: January 30, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fuminori Mitsuhashi, Yasunori Tateno, Masahiro Adachi, Yoshiyuki Yamamoto
  • Patent number: 11881394
    Abstract: A stack includes a base portion consisting of silicon carbide and having a first surface that is a Si face and a carbon atom thin film disposed on the first surface and including a first main surface facing the first surface and a second main surface that is a main surface on an opposite side from the first main surface. The carbon atom thin film consists of carbon atoms. The carbon atom thin film includes at least one of a buffer layer that is a carbon atom layer including carbon atoms bonded to silicon atoms forming the Si face and a graphene layer. The second main surface includes a plurality of terraces parallel to the Si face of the silicon carbide forming the base portion and a plurality of steps connecting together the plurality of terraces.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: January 23, 2024
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Fuminori Mitsuhashi, Yasunori Tateno, Masahiro Adachi, Yoshiyuki Yamamoto
  • Patent number: 11832519
    Abstract: A thermoelectric conversion material is constituted of a semiconductor that contains a constituent element and an additive element having a difference of 1 in the number of electrons in an outermost shell from the constituent element, the additive element having a concentration of not less than 0.01 at % and not more than 30 at %. The semiconductor has a microstructure including an amorphous phase and a granular crystal phase dispersed in the amorphous phase. The amorphous phase includes a first region in which the concentration of the additive element is a first concentration, and a second region in which the concentration of the additive element is a second concentration lower than the first concentration. The first concentration and the second concentration have a difference of not less than 15 at % and not more than 25 at % therebetween.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: November 28, 2023
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA SCHOOL FOUNDATION
    Inventors: Kotaro Hirose, Masahiro Adachi, Tsunehiro Takeuchi