Patents by Inventor Kazuma HIBI

Kazuma HIBI 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: 20220349026
    Abstract: A metal purifying method having: a local heating step of heating an aluminum-based molten metal in a first region on a molten metal surface of the aluminum-based molten metal; and a local low pressure step of lowering the pressure in a second region on the molten metal surface to a pressure lower than the pressure in the first region. The second region is different from the first region. This allows a specific element to be vaporized from the second region to purify the aluminum-based molten metal. The specific element is one or more of Zn, Mg, or Pb having a saturated vapor pressure higher than that of Al. This is effective not only in a purifying method for removing a specific element from an aluminum-based molten metal but also in a method of recovering a specific element, which can be a resource, from an aluminum-based molten metal.
    Type: Application
    Filed: April 14, 2022
    Publication date: November 3, 2022
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA TSUSHO CORPORATION
    Inventors: Hiroshi KAWAHARA, Jun YAOKAWA, Kazuma HIBI, Hiroyuki MORI, Yasushi IWATA, Takuma MINOURA, Hiroyuki ISHII, Daisuke SAKUMA, Yusei KUSAKA, Akira KANO, Kyosuke ITO, Satoshi NAKANO
  • Publication number: 20220140356
    Abstract: An object provides a power generation apparatus performing the purification of an Al alloy melt using scrap as raw material. A power generation apparatus includes: a container body with aluminum alloy melt and molten salt in a liquid junction with the aluminum alloy melt; an anode which is in contact with the aluminum alloy melt; and a cathode which is in contact with the molten salt. DC power is obtained from between the anode and the cathode by an anode reaction on the aluminum alloy melt side and a cathode reaction on the molten salt side. When the aluminum alloy melt and the molten salt are separated by a separator allowing ionic conduction between the aluminum alloy melt and molten salt, the power generation efficiency is enhanced. The amount of a reactant in the Al alloy melt is monitored by measuring the electrical quantity associated with the power generation.
    Type: Application
    Filed: June 15, 2021
    Publication date: May 5, 2022
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Jun YAOKAWA, Kazuma HIBI, Takuma MINOURA, Hiroshi KAWAHARA, Yasushi IWATA
  • Publication number: 20220106666
    Abstract: A recycling method for aluminum alloy is capable of offering a recycled Al alloy (melt), in which the Fe concentration is efficiently reduced, while using Al alloy scrap and the like as raw materials. The method includes: a preparation step of preparing a first melt by melting an Fe.Mn-containing material that contains Fe and Mn and an Al alloy raw material; a crystallization step of holding the first melt at a separation temperature at which an Fe compound crystallizes; and an extraction step of extracting a second melt obtained by removing at least part of the Fe compound crystallized from the first melt. The Fe.Mn-containing material preferably has a mass ratio of Mn to Fe (Mn/Fe) of, for example, 2 or more.
    Type: Application
    Filed: November 25, 2019
    Publication date: April 7, 2022
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOTA TSUSHO CORPORATION
    Inventors: Takuma MINOURA, Jun YAOKAWA, Yasushi IWATA, Hiroshi KAWAHARA, Kazuma HIBI, Noriyuki UENO, Akira KANO, Yusei KUSAKA, Kyosuke ITO, Tomoo MURATA
  • Publication number: 20220106673
    Abstract: The present disclosure provides a method for manufacturing an aluminum alloy member capable of suppressing deterioration in ductility thereof. In the method for manufacturing an aluminum alloy member, an aluminum alloy casting material that contains 2.0 to 5.5 mass % of Cu, and 4.0 to 7.0 mass % of Si in which a content of Mg is 0.5 mass % or less, a content of Zn is 1.0 mass % or less, a content of Fe is 1.0 mass % or less, a content of Mn is 0.5 mass % or less and the balance is made of Al and inevitable impurities is used. The method for manufacturing an aluminum alloy member includes a heating and holding step of heating and holding the aluminum alloy casting material within a solid-liquid coexisting temperature region; and a quenching step of rapidly cooling the aluminum alloy casting material after performing the heating and holding step.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 7, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke YOKOTA, Hirotsune WATANABE, Makoto KIKUCHI, Hiroshi KAWAHARA, Yasushi IWATA, Jun YAOKAWA, Kazuma HIBI
  • Patent number: 11214857
    Abstract: The present disclosure provides a method for manufacturing an aluminum alloy member capable of suppressing deterioration in ductility thereof. In the method for manufacturing an aluminum alloy member, an aluminum alloy casting material that contains 2.0 to 5.5 mass % of Cu, and 4.0 to 7.0 mass % of Si in which a content of Mg is 0.5 mass % or less, a content of Zn is 1.0 mass % or less, a content of Fe is 1.0 mass % or less, a content of Mn is 0.5 mass % or less and the balance is made of Al and inevitable impurities is used. The method for manufacturing an aluminum alloy member includes a heating and holding step of heating and holding the aluminum alloy casting material within a solid-liquid coexisting temperature region; and a quenching step of rapidly cooling the aluminum ally casting material after performing the heating and holding step.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: January 4, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke Yokota, Hirotsune Watanabe, Makoto Kikuchi, Hiroshi Kawahara, Yasushi Iwata, Jun Yaokawa, Kazuma Hibi
  • Publication number: 20190284669
    Abstract: The present disclosure provides a method for manufacturing an aluminum alloy member capable of suppressing deterioration in ductility thereof. In the method for manufacturing an aluminum alloy member, an aluminum alloy casting material that contains 2.0 to 5.5 mass % of Cu, and 4.0 to 7.0 mass % of Si in which a content of Mg is 0.5 mass % or less, a content of Zn is 1.0 mass % or less, a content of Fe is 1.0 mass % or less, a content of Mn is 0.5 mass % or less and the balance is made of Al and inevitable impurities is used. The method for manufacturing an aluminum alloy member includes a heating and holding step of heating and holding the aluminum alloy casting material within a solid-liquid coexisting temperature region; and a quenching step of rapidly cooling the aluminum ally casting material after performing the heating and holding step.
    Type: Application
    Filed: February 5, 2019
    Publication date: September 19, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke YOKOTA, Hirotsune WATANABE, Makoto KIKUCHI, Hiroshi KAWAHARA, Yasushi IWATA, Jun YAOKAWA, Kazuma HIBI