Patents by Inventor Yosuke Tatebayashi

Yosuke Tatebayashi 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: 20190300979
    Abstract: The seamless steel pipe of the present embodiment consists of in mass %, C: 0.21 to 0.35%, Si: 0.10 to 0.50%, Mn: 0.05 to 1.00%, P: 0.025% or less, S: 0.010% or less, Al: 0.005 to 0.100%, N: 0.010% or less, Cr: 0.05 to 1.50%, Mo: 0.10 to 1.50%, Nb: 0.010 to 0.050%, B: 0.0003 to 0.0050%, and Ti: 0.002 to 0.050%, the balance being Fe and impurities. In a main body region of the seamless steel pipe, a grain size number of prior-austenite grain conforming to ASTM E112 is 7.0 or more, a difference between a maximum value and a minimum value of the grain size number is 1.0 or less, yield strength is 655 to less than 862 MPa, and a difference between a maximum value and a minimum value of tensile strength is 27.6 MPa or less.
    Type: Application
    Filed: May 18, 2017
    Publication date: October 3, 2019
    Inventors: Atsushi Soma, Yuji Arai, Yosuke Tatebayashi, Keisuke Furo, Takenori Kuramoto, Hiroki Kamitani, Kouji Yamane
  • Patent number: 10300513
    Abstract: A piercing plug includes a plug main body, and a sprayed coating which is formed on a surface of the plug main body and includes iron and iron oxide. A chemical composition of the sprayed coating includes, in addition to the iron and the iron oxide, by mass %, C: 0.015% to 0.6%, Si: 0.05% to 0.5%, Mn: 0.1% to 1.0%, and Cu: 0 to 0.3%.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: May 28, 2019
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yosuke Tatebayashi, Yasuyoshi Hidaka, Yasuto Higashida, Kouji Nakaike, Takateru Inage
  • Patent number: 9764366
    Abstract: It is an objective to provide a plug capable of enhancing a usage count of the plug, which is for use in a piercing machine for piercing-rolling a billet, and a regenerating method of the plug. The plug (10) is for use in a piercing machine (30) for piercing-rolling a billet (36). The plug (10) includes a body (18), a columnar portion (20), and a sprayed film (16). The body (18) has a maximum diameter at its rear end. The columnar portion (20) has the same diameter as the diameter of the rear end of the body (18), and extends from the rear end of the body (18). The sprayed film (16) is formed on a surface of the body (18) and on a surface of the columnar portion (20).
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: September 19, 2017
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yasuto Higashida, Yasuyoshi Hidaka, Kazuhiro Shimoda, Yosuke Tatebayashi
  • Publication number: 20160053358
    Abstract: A piercing plug includes a plug main body, and a sprayed coating which is formed on a surface of the plug main body and includes iron and iron oxide. A chemical composition of the sprayed coating includes, in addition to the iron and the iron oxide, by mass %, C: 0.015% to 0.6%, Si: 0.05% to 0.5%, Mn: 0.1% to 1.0%, and Cu: 0 to 0.3%.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 25, 2016
    Applicant: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Yosuke TATEBAYASHI, Yasuyoshi HIDAKA, Yasuto HIGASHIDA, Kouji NAKAIKE, Takateru INAGE
  • Publication number: 20150140208
    Abstract: It is an objective to provide a plug capable of enhancing a usage count of the plug, which is for use in a piercing machine for piercing-rolling a billet, and a regenerating method of the plug. The plug (10) is for use in a piercing machine (30) for piercing-rolling a billet (36). The plug (10) includes a body (18), a columnar portion (20), and a sprayed film (16). The body (18) has a maximum diameter at its rear end. The columnar portion (20) has the same diameter as the diameter of the rear end of the body (18), and extends from the rear end of the body (18). The sprayed film (16) is formed on a surface of the body (18) and on a surface of the columnar portion (20).
    Type: Application
    Filed: March 4, 2013
    Publication date: May 21, 2015
    Inventors: Yasuto Higashida, Yasuyoshi Hidaka, Kazuhiro Shimoda, Yosuke Tatebayashi
  • Publication number: 20130269407
    Abstract: When performing piercing-rolling by use of a plug with a protection film on its surface, applying a lubricant made of an aqueous solution containing a total of 5 to 30% mass % of one or more of boron oxide, boric acid, and amine borate to the protection film on the plug surface, and using this plug for piercing-rolling makes it possible to realize the increase of the life of plug for piecing-rolling without reducing the efficiency of piercing-rolling. The plug can be cooled after the piecing-rolling, the application of the above described lubricant is performed when the surface temperature of the front edge of plug decreases to 100° C. or less, and the plug is reused for the piercing-rolling. In this occasion, the protection film on the plug . surface can be formed by arc spraying iron wire material onto the surface of the base metal of plug, and comprises oxides and Fe.
    Type: Application
    Filed: December 20, 2011
    Publication date: October 17, 2013
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Yosuke Tatebayashi, Yasuto Higashida, Sumio Iida