Patents by Inventor Youhei HOSHI

Youhei HOSHI 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).

  • Method for manufacturing alloy ingot
    Patent number: 10603711
    Abstract: The present invention relates to a method for manufacturing a round-rod shaped alloy ingot by hot forging, containing suspending a primary alloy ingot having a round-rod shape in a columnar mold while one end of the primary alloy ingot is held, pouring a molten metal formed of a heat-retaining metal into the columnar mold so as to apply a coating of the heat-retaining metal to the entire circumference of the primary alloy ingot, to obtain a forging alloy ingot, taking the forging alloy ingot out from the columnar mold, then subjecting the forging alloy ingot to a hot forging while an end portion of the forging alloy ingot is gripped as a gripping portion, and removing the coating of the heat-retaining metal.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: March 31, 2020
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Youhei Hoshi, Yasuhiro Sawada, Kenta Yamashita
  • METHOD FOR MANUFACTURING ALLOY INGOT
    Publication number: 20170216906
    Abstract: The present invention relates to a method for manufacturing a round-rod shaped alloy ingot by hot forging, containing suspending a primary alloy ingot having a round-rod shape in a columnar mold while one end of the primary alloy ingot is held, pouring a molten metal formed of a heat-retaining metal into the columnar mold so as to apply a coating of the heat-retaining metal to the entire circumference of the primary alloy ingot, to obtain a forging alloy ingot, taking the forging alloy ingot out from the columnar mold, then subjecting the forging alloy ingot to a hot forging while an end portion of the forging alloy ingot is gripped as a gripping portion, and removing the coating of the heat-retaining metal.
    Type: Application
    Filed: January 24, 2017
    Publication date: August 3, 2017
    Inventors: Youhei HOSHI, Yasuhiro SAWADA, Kenta YAMASHITA