Patents by Inventor Toshimi Hitora

Toshimi Hitora 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: 11967618
    Abstract: A crystalline oxide semiconductor film with an enhanced electrical property is provided. By use of a mist CVD apparatus, a crystalline oxide semiconductor film with a corundum structure and a principal plane that is an a-plane or an m-plane was obtained on a crystalline substrate by atomizing a raw-material solution containing a dopant that is an n-type dopant to obtain atomized droplets, carrying the atomized droplets by carrier gas onto the crystalline substrate that is an a-plane corundum-structured crystalline substrate or an m-plane corundum-structured crystalline substrate placed in a film-formation chamber, and the atomized droplets were thermally reacted to form the crystalline oxide semiconductor film on the crystalline substrate.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: April 23, 2024
    Assignee: FLOSFIA INC.
    Inventors: Isao Takahashi, Takashi Shinohe, Rie Tokuda, Masaya Oda, Toshimi Hitora
  • Patent number: 11916103
    Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: February 27, 2024
    Assignees: FLOSFIA INC., KYOTO UNIVERSITY
    Inventors: Shizuo Fujita, Kentaro Kaneko, Toshimi Hitora, Tomochika Tanikawa
  • Publication number: 20230315959
    Abstract: Provided a design support apparatus of supporting design of a component embedded substrate including one or more embedded electronic components that configure at least a part of a circuit, including, a component information acquiring unit that acquires component information about the electronic components to be incorporated in the component embedded substrate; and a required minimum area calculating unit that calculates a required minimum area of a surface of the component embedded substrate on the basis of at least information about a size of each electronic component contained in the component information.
    Type: Application
    Filed: December 28, 2022
    Publication date: October 5, 2023
    Inventors: Masato ITO, Masaya MITAKE, Kengo TAKEUCHI, Toshimi HITORA, Fujio OKUI
  • Patent number: 11682702
    Abstract: A semiconductor film, a sheet like object, and a semiconductor device are provided that have inhibited semiconductor properties, particularly leakage current, and excellent withstand voltage and heat dissipation. A crystalline semiconductor film or a sheet like object includes a corundum structured oxide semiconductor as a major component, wherein the film has a film thickness of 1 ?m or more. Particularly, the semiconductor film or the object includes a semiconductor component of oxide of one or more selected from gallium, indium, and aluminum as a major component. A semiconductor device has a semiconductor structure including the semiconductor film or the object.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: June 20, 2023
    Assignee: FLOSFIA Inc.
    Inventors: Toshimi Hitora, Masaya Oda, Akio Takatsuka
  • Publication number: 20220352303
    Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.
    Type: Application
    Filed: July 18, 2022
    Publication date: November 3, 2022
    Inventors: Shizuo FUJITA, Kentaro KANEKO, Toshimi HITORA, Tomochika TANIKAWA
  • Patent number: 11462746
    Abstract: In a first aspect of a present inventive subject matter, a multilayer structure includes a base with a surface and an electrically-conductive metal oxide film that is positioned directly or via another layer on the base. At least a part of the surface of the base contains as a major component at least one selected from the group of copper, copper alloy, aluminum, aluminum alloy, magnesium, magnesium alloy, and stainless steel. The electrically-conductive metal oxide film is 30 nm or more in thickness. The multilayer structure is electrically-conductive and has a contact resistance that is 100 m?cm2 or less.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: October 4, 2022
    Assignee: FLOSFIA INC.
    Inventors: Shingo Yagyu, Takuto Igawa, Toshimi Hitora
  • Publication number: 20220302263
    Abstract: A crystalline oxide semiconductor film with an enhanced electrical property is provided. By use of a mist CVD apparatus, a crystalline oxide semiconductor film with a corundum structure and a principal plane that is an a-plane or an m-plane was obtained on a crystalline substrate by atomizing a raw-material solution containing a dopant that is an n-type dopant to obtain atomized droplets, carrying the atomized droplets by carrier gas onto the crystalline substrate that is an a-plane corundum-structured crystalline substrate or an m-plane corundum-structured crystalline substrate placed in a film-formation chamber, and the atomized droplets were thermally reacted to form the crystalline oxide semiconductor film on the crystalline substrate.
    Type: Application
    Filed: June 6, 2022
    Publication date: September 22, 2022
    Inventors: Isao TAKAHASHI, Takashi SHINOHE, Rie TOKUDA, Masaya ODA, Toshimi HITORA
  • Patent number: 11450774
    Abstract: A semiconductor device with an enhanced semiconductor characteristics that is useful for power devices. A semiconductor device including: a semiconductor region; a barrier electrode arranged on the semiconductor region; and two or more adjustment regions of barrier height that are on a surface of the semiconductor region and arranged between the semiconductor region and the barrier electrode, the adjustment regions are configured such that barrier height at an interface between the adjustment regions and the barrier electrode is higher than barrier height at an interface between the semiconductor region and the barrier electrode.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: September 20, 2022
    Assignee: FLOSFIA INC.
    Inventors: Masahiro Sugimoto, Isao Takahashi, Hitoshi Kambara, Takashi Shinohe, Toshimi Hitora
  • Patent number: 11424320
    Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 23, 2022
    Assignees: FLOSFIA INC., KYOTO UNIVERSITY
    Inventors: Shizuo Fujita, Kentaro Kaneko, Toshimi Hitora, Tomochika Tanikawa
  • Patent number: 11393906
    Abstract: A crystalline oxide semiconductor film with an enhanced electrical property is provided. By use of a mist CVD apparatus, a crystalline oxide semiconductor film with a corundum structure and a principal plane that is an a-plane or an m-plane was obtained on a crystalline substrate by atomizing a raw-material solution containing a dopant that is an n-type dopant to obtain atomized droplets, carrying the atomized droplets by carrier gas onto the crystalline substrate that is an a-plane corundum-structured crystalline substrate or an m-plane corundum-structured crystalline substrate placed in a film-formation chamber, and the atomized droplets were thermally reacted to form the crystalline oxide semiconductor film on the crystalline substrate.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: July 19, 2022
    Assignee: FLOSFIA INC.
    Inventors: Isao Takahashi, Takashi Shinohe, Rie Tokuda, Masaya Oda, Toshimi Hitora
  • Publication number: 20220049348
    Abstract: There is provided a thin film manufacturing method which allows both a reduction in the carbon impurity concentration and a high film forming speed, as well as allows separate formation of stable crystal structures. There is provided a method for manufacturing an oxide crystal thin film. The method includes carrying raw material fine particles to a film forming chamber by means of a carrier gas, the raw material fine particles being formed from a raw material solution including water and at least one of a gallium compound and an indium compound, and forming an oxide crystal thin film on a sample on which films are to be formed, the sample being placed in the film forming chamber. At least one of the gallium compound and the indium compound is bromide or iodide.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Applicant: FLOSFIA INC.
    Inventors: Masaya Oda, Toshimi Hitora
  • Patent number: 11189846
    Abstract: An electrically-conductive member having sufficient corrosion resistivity even when the electrically-conductive member is exposed to high potential environment and a method of manufacturing the electrically-conductive member are offered. An electrically-conductive member is obtained by a mist CVD method, by forming a metal oxide film on a base member of a separator, and the electrically-conductive member has an active potential range and a passive potential range in an anode polarization curve that is measured in a sulfuric acid aqueous solution having a sulfuric acid concentration that is 5.0×10?4 mol/dm3 at pH3 and having a temperature of 25° C., an anode current density that is 1×10?7 A/cm2 or less in the passive potential range, and the passive potential range reaching to an electric potential that is 1V.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: November 30, 2021
    Assignees: FLOSFIA INC., EYETEC CO., LTD., KYOTO UNIVERSITY
    Inventors: Shizuo Fujita, Masafumi Ono, Takayuki Uchida, Kentaro Kaneko, Takashi Tanaka, Toshimi Hitora, Shingo Yagyu
  • Patent number: 11152208
    Abstract: A semiconductor film containing silicon that is evenly doped in the semiconductor film with an enhanced semiconductor property and a method of the semiconductor film using a dopant material containing a complex compound that contains at least silicon and a halogen. The complex compound further contains a hydrocarbon group that is optionally substituted or heterocyclic group that is optionally substituted. A semiconductor film containing Si doped into the semiconductor film as a dopant to a depth that is at least 0.3 ?m or deeper from a surface of the semiconductor film is obtained by forming the semiconductor film in that the dopant material is doped, the semiconductor film is 100 ?m or less in film thickness with carrier density that is 1×1020/cm3 or less and electron mobility that is 1 cm2/Vs or more.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 19, 2021
    Assignees: FLOSFIA INC., KYOTO UNIVERSITY
    Inventors: Shizuo Fujita, Takayuki Uchida, Kentaro Kaneko, Masaya Oda, Toshimi Hitora
  • Patent number: 11107926
    Abstract: A new and useful oxide semiconductor film with enhanced p-type semiconductor property and the method of manufacturing the oxide semiconductor film are provided. A method of manufacturing an oxide semiconductor film including: generating atomized droplets by atomizing a raw material solution containing a metal of Group 9 of the periodic table and/or a metal of Group 13 of the periodic table and a p-type dopant; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under oxygen atmosphere to form the oxide semiconductor film on the base.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 31, 2021
    Assignee: FLOSFIA INC.
    Inventors: Tomochika Tanikawa, Toshimi Hitora
  • Patent number: 11087977
    Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution including iridium and a metal that is different from iridium and optionally contained; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base to form a crystal or a mixed crystal of a metal oxide including iridium.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: August 10, 2021
    Assignees: FLOSFIA INC, KYOTO UNIVERSITY
    Inventors: Shizuo Fujita, Kentaro Kaneko, Masaya Oda, Toshimi Hitora
  • Patent number: 11088242
    Abstract: As an aspect of an embodiment, a crystal contains a metal oxide containing Ga and Mn and having a corundum structure.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: August 10, 2021
    Assignee: FLOSFIA INC.
    Inventors: Tokiyoshi Matsuda, Takahiro Sasaki, Toshimi Hitora, Isao Takahashi
  • Patent number: 11069781
    Abstract: A semiconductor film, a sheet like object, and a semiconductor device are provided that have inhibited semiconductor properties, particularly leakage current, and excellent withstand voltage and heat dissipation. A crystalline semiconductor film or a sheet like object includes a corundum structured oxide semiconductor as a major component, wherein the film has a film thickness of 1 ?m or more. Particularly, the semiconductor film or the object includes a semiconductor component of oxide of one or more selected from gallium, indium, and aluminum as a major component. A semiconductor device has a semiconductor structure including the semiconductor film or the object.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: July 20, 2021
    Assignee: FLOSFIA INC.
    Inventors: Toshimi Hitora, Masaya Oda, Akio Takatsuka
  • Patent number: 11038026
    Abstract: Provided is a crystalline multilayer structure having good semiconductor properties. The crystalline multilayer structure includes a base substrate and a corundum-structured crystalline oxide semiconductor thin film disposed directly on the base substrate or with another layer therebetween. The crystalline oxide semiconductor thin film is 0.1 ?m or less in a surface roughness (Ra).
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 15, 2021
    Assignee: FLOSFIA INC.
    Inventors: Toshimi Hitora, Masaya Oda
  • Publication number: 20210143251
    Abstract: As an aspect of an embodiment, a crystal contains a metal oxide containing Ga and Mn and having a corundum structure.
    Type: Application
    Filed: March 30, 2020
    Publication date: May 13, 2021
    Inventors: Tokiyoshi MATSUDA, Takahiro SASAKI, Toshimi HITORA, Isao TAKAHASHI
  • Patent number: 10989609
    Abstract: Under predetermined film depositing conditions, the raw material solution of the thermistor film is atomized or dropletized, the carrier gas is supplied to the obtained mist or droplet, the mist or droplet is conveyed to the substrate, and then the mist or droplet is thermally reacted on the substrate to deposit a film. A resultant thermistor thin film has a film thickness of 1 ?m or less, a film width of 5 mm or more, a thickness of 50 nm or more and 5 ?m or less, a thickness in the range of less than ±50 nm, a thickness of 5 mm or less, and/or a thickness of 50 nm or more and 5 ?m or less, and has a film surface roughness (Ra) of 0.1 ?m or less.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 27, 2021
    Assignee: FLOSFIA INC.
    Inventors: Shingo Yagyu, Takahiro Sasaki, Toshimi Hitora