Patents by Inventor Ryo Akiike

Ryo Akiike 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: 11839158
    Abstract: Provided is a silicide-based alloy material with which environmental load can be reduced and high thermoelectric conversion performance can be obtained. Provided is a silicide-based alloy material including silicon and ruthenium as main components, in which when the contents of silicon and ruthenium are denoted by Si and Ru, respectively, the atomic ratio of the devices constituting the alloy material satisfies the following: 45 atm %?Si/(Ru+Si)?70 atm % 30 atm %?Ru/(Ru+Si)?55 atm %.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: December 5, 2023
    Assignee: TOSOH CORPORATION
    Inventors: Yoichiro Koda, Ryo Akiike, Hideto Kuramochi
  • Patent number: 11793077
    Abstract: Provided is a silicide-based alloy material with which environmental load can be reduced and high thermoelectric conversion performance can be obtained. Provided is a silicide-based alloy material including silicon and ruthenium as main components, in which when the contents of silicon and ruthenium are denoted by Si and Ru, respectively, the atomic ratio of the devices constituting the alloy material satisfies the following: 45 atm %?Si/(Ru+Si)?70 atm % 30 atm %?Ru/(Ru+Si)?55 atm %.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: October 17, 2023
    Assignee: TOSOH CORPORATION
    Inventors: Yoichiro Koda, Ryo Akiike, Hideto Kuramochi
  • Publication number: 20230183844
    Abstract: A silicide-based alloy material and a device in which the silicide-based alloy material is used are disclosed. The silicide-based alloy material can reduce environmental impact and provide high thermoelectric FIGURE of merit at room temperature. Provided is a silicide-based alloy material comprising, as major components, silver, barium and silicon, wherein atomic ratios of elements that constitute the alloy material are as follows: 9 at %?Ag/(Ag+Ba+Si)?27 at %, 20 at %?Ba/(Ag+Ba+Si)?53 at %, and 37 at %?Si/(Ag+Ba+Si)?65 at %, where Ag represents a content of the silver, Ba represents a content of the barium and Si represents a content of the silicon, and the silicide-based alloy material has an average grain size of less than or equal to 20 ?m.
    Type: Application
    Filed: May 17, 2021
    Publication date: June 15, 2023
    Inventors: Ryo AKIIKE, Yoichiro KODA, Masami MESUDA
  • Patent number: 11377725
    Abstract: An oxide sintered body containing indium, hafnium, tantalum, and oxygen as constituent elements, in which when indium, hafnium, and tantalum are designated as In, Hf, and Ta, respectively, the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.002 to 0.030, and the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.0002 to 0.013.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: July 5, 2022
    Assignee: TOSOH CORPORATION
    Inventors: Ryo Akiike, Yuya Tsuchida, Hideto Kuramochi
  • Publication number: 20220149258
    Abstract: Provided is a silicide-based alloy material with which environmental load can be reduced and high thermoelectric conversion performance can be obtained. Provided is a silicide-based alloy material including silicon and ruthenium as main components, in which when the contents of silicon and ruthenium are denoted by Si and Ru, respectively, the atomic ratio of the devices constituting the alloy material satisfies the following: 45 atm %?Si/(Ru+Si)?70 atm % 30 atm %?Ru/(Ru+Si)?55 atm %.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 12, 2022
    Applicant: TOSOH CORPORATION
    Inventors: Yoichiro KODA, Ryo AKIIKE, Hideto KURAMOCHI
  • Publication number: 20210002755
    Abstract: An oxide sintered body containing indium, hafnium, tantalum, and oxygen as constituent elements, in which when indium, hafnium, and tantalum are designated as In, Hf, and Ta, respectively, the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.002 to 0.030, and the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.0002 to 0.013.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 7, 2021
    Applicant: TOSOH CORPORATION
    Inventors: Ryo AKIIKE, Yuya TSUCHIDA, Hideto KURAMOCHI
  • Patent number: 10815564
    Abstract: An oxide sintered body containing indium, hafnium, tantalum, and oxygen as constituent elements, in which when indium, hafnium, and tantalum are designated as In, Hf, and Ta, respectively, the atomic ratio of Hf/(In+Hf+Ta) is equal to 0.002 to 0.030, and the atomic ratio of Ta/(In+Hf+Ta) is equal to 0.0002 to 0.013.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: October 27, 2020
    Assignee: TOSOH CORPORATION
    Inventors: Ryo Akiike, Yuya Tsuchida, Hideto Kuramochi
  • Publication number: 20190071768
    Abstract: Provided are an oxide sintered body that can produce a transparent conductive oxide film having low resistance and exhibiting lower light absorption characteristics in a wide wavelength range, and a transparent conductive oxide film. An oxide sintered body containing indium, hafnium, tantalum, and oxygen as constituent elements, in which when indium, hafnium, and tantalum are designated as In, Hf, and Ta, respectively, the atomic ratio Hf/(In+Hf+Ta) is 0.2 at % to 3.0 at %, and the atomic ratio Ta/(In+Hf+Ta) is 0.02 at % to 1.3 at %, is used.
    Type: Application
    Filed: February 20, 2017
    Publication date: March 7, 2019
    Applicant: TOSOH-CORPORATION
    Inventors: Ryo AKIIKE, Yuya TSUCHIDA, Hideto KURAMOCHI
  • Patent number: 9418771
    Abstract: The present invention provides a complex oxide sintered body 10 wherein Zr/(In+Zr+Y) is 0.05 to 4.5 at % and Y/(In+Zr+Y) is 0.005 to 0.5 at % in an atomic ratio when indium, zirconium, and yttrium are designated by In, Zr, and Y, respectively. Moreover, the present invention provides a sputtering target including the complex oxide sintered body 10 and a transparent conductive oxide film obtained by sputtering the sputtering target.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: August 16, 2016
    Assignee: TOSOH CORPORATION
    Inventors: Hideto Kuramochi, Kimiaki Tamano, Hitoshi Iigusa, Ryo Akiike, Tetsuo Shibutami
  • Patent number: 9399815
    Abstract: The invention provides an oxide sintered compact 2 composed of a crystal phase which consists of a bixbite-type oxide phase and a perovskite-type oxide phase, or a bixbite-type oxide phase, the crystal phase having indium, tin, strontium and oxygen as the constituent elements, and the indium, the tin and the strontium contents satisfying formulas (1) and (2) in terms of atomic ratio, as well as a sputtering target. There are further provided an oxide transparent conductive film formed using the sputtering target, and a solar cell. Sn/(In+Sn+Sr)=0.01-0.11??(1) Sr/(In+Sn+Sr)=0.0005-0.004??(2) [In formulas (1) and (2), In, Sn and Sr represent indium, tin and strontium contents (atomic percent), respectively.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: July 26, 2016
    Assignee: TOSOH CORPORATION
    Inventors: Hideto Kuramochi, Keitaro Matsumaru, Ryo Akiike, Kentaro Utsumi, Tetsuo Shibutami
  • Patent number: 9336920
    Abstract: To provide a composite oxide sintered body from which an oxide transparent conductive film having lower light absorption properties in a wide wavelength region and having a low resistance can be obtained, and an oxide transparent conductive film. A composite oxide sintered body containing indium, zirconium, hafnium and oxygen, wherein the atomic ratio of the elements constituting the sintered body satisfies the following formulae, where In, Zr and Hf are respectively contents of indium, zirconium and hafnium: Zr/(In+Zr+Hf)=0.05 to 4.5 at % Hf/(In+Zr+Hf)=0.0002 to 0.15 at %.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: May 10, 2016
    Assignee: TOSOH CORPORATION
    Inventors: Hideto Kuramochi, Kimiaki Tamano, Ryo Akiike, Hitoshi Iigusa
  • Publication number: 20150295116
    Abstract: To provide an oxide sintered body for a sputtering target, which is capable of adding specific elements to from an n-type semiconductor layer to a p-type semiconductor layer surface of a compound thin-film solar cell. An oxide sintered body which contains zinc (Zn) and at least one type of element (X) (excluding a case where magnesium is added alone) that has an ionization potential Ip of 4.5 eV?Ip?8.0 eV and an atomic radius d of 1.20 ??d?2.50 ? and which has a composition ratio (atomic ratio) of 0.0001?X/(Zn+X)?0.20 and a sintered density of at least 95%.
    Type: Application
    Filed: November 18, 2013
    Publication date: October 15, 2015
    Applicant: TOSOH CORPORATION
    Inventors: Ryo Akiike, Hideto Kuramochi, Kimiaki Tamano
  • Publication number: 20150187548
    Abstract: To provide a composite oxide sintered body from which an oxide transparent conductive film having lower light absorption properties in a wide wavelength region and having a low resistance can be obtained, and an oxide transparent conductive film. A composite oxide sintered body containing indium, zirconium, hafnium and oxygen, wherein the atomic ratio of the elements constituting the sintered body satisfies the following formulae, where In, Zr and Hf are respectively contents of indium, zirconium and hafnium: Zr/(In+Zr+Hf)=0.05 to 4.5 at % Hf/(In+Zr+Hf)=0.0002 to 0.
    Type: Application
    Filed: August 8, 2013
    Publication date: July 2, 2015
    Applicant: TOSOH CORPORATION
    Inventors: Hideto Kuramochi, Kimiaki Tamano, Ryo Akiike, Hitoshi Iigusa
  • Patent number: 9024176
    Abstract: A transparent conductive zinc oxide based film according to the present invention contains Ti, Al and Zn in such a proportion that satisfies the following formulae (1), (2) and (3) in terms of atomic ratio, and has a plurality of surface textures different in size on a surface, wherein a center-line average surface roughness Ra of the surface of the transparent conductive film is 30 nm to 200 nm, and an average value of widths of the surface textures is 100 nm to 10 ?m. 0.001?Ti/(Zn+Al+Ti)?0.079.??(1) 0.001?Al/(Zn+Al+Ti)?0.079??(2) 0.010?(Ti+Al)/(Zn+Al+Ti)?0.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: May 5, 2015
    Assignee: Tosoh Corporation
    Inventors: Ryo Akiike, Hideto Kuramochi, Hitoshi Iigusa
  • Publication number: 20140332735
    Abstract: The present invention provides a complex oxide sintered body 10 wherein Zr/(In+Zr+Y) is 0.05 to 4.5 at % and Y/(In+Zr+Y) is 0.005 to 0.5 at % in an atomic ratio when indium, zirconium, and yttrium are designated by In, Zr, and Y, respectively. Moreover, the present invention provides a sputtering target including the complex oxide sintered body 10 and a transparent conductive oxide film obtained by sputtering the sputtering target.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 13, 2014
    Inventors: Hideto Kuramochi, Kimiaki Tamano, Hitoshi Ilgusa, Ryo Akiike, Tetsuo Shibutami
  • Publication number: 20130276879
    Abstract: The invention provides an oxide sintered compact 2 composed of a crystal phase which consists of a bixbite-type oxide phase and a perovskite-type oxide phase, or a bixbite-type oxide phase, the crystal phase having indium, tin, strontium and oxygen as the constituent elements, and the indium, the tin and the strontium contents satisfying formulas (1) and (2) in terms of atomic ratio, as well as a sputtering target. There are further provided an oxide transparent conductive film formed using the sputtering target, and a solar cell. Sn/(In+Sn+Sr)=0.01-0.11??(1) Sr/(In+Sn+Sr)=0.0005-0.004??(2) [In formulas (1) and (2), In, Sn and Sr represent indium, tin and strontium contents (atomic percent), respectively.
    Type: Application
    Filed: September 27, 2011
    Publication date: October 24, 2013
    Applicant: TOSOH CORPORATION
    Inventors: Hideto Kuramochi, Keitaro Matsumaru, Ryo Akiike, Kentaro Utsumi, Tetsuo Shibutami
  • Publication number: 20130048060
    Abstract: A transparent conductive zinc oxide based film according to the present invention contains Ti, Al and Zn in such a proportion that satisfies the following formulae (1), (2) and (3) in terms of atomic ratio, and has a plurality of surface textures different in size on a surface, wherein a center-line average surface roughness Ra of the surface of the transparent conductive film is 30 nm to 200 nm, and an average value of widths of the surface textures is 100 nm to 10 ?m. 0.001?Ti/(Zn+Al+Ti)?0.079.??(1) 0.001?Al/(Zn+Al+Ti)?0.079??(2) 0.010?(Ti+Al)/(Zn+Al+Ti)?0.
    Type: Application
    Filed: April 7, 2011
    Publication date: February 28, 2013
    Applicant: TOSOH CORPORATION
    Inventors: Ryo Akiike, Hideto Kuramochi, Hitoshi Iigusa