Patents by Inventor Takayuki NARUSHIMA

Takayuki NARUSHIMA 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: 20200239979
    Abstract: A method for refining a titanium material, in which oxygen contained in a titanium material made of a pure titanium, a titanium alloy or an intermetallic compound containing titanium as one of main components is removed, the method includes: a first melting step of melting the titanium material under a noble gas atmosphere containing 5 to 70 vol % of hydrogen, thereby introducing hydrogen into a melt of the titanium material; and a second melting step of melting the titanium material into which hydrogen has been introduced in the first melting step under a noble gas atmosphere, thereby removing oxygen contained in the titanium material from the melt of the titanium material together with the hydrogen. Each of the first melting step and the second melting step is carried out at least once.
    Type: Application
    Filed: October 29, 2018
    Publication date: July 30, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Daisuke MATSUWAKA, Takayuki NARUSHIMA, Kyosuke UEDA