Patents by Inventor Yoshiteru Fukuoka

Yoshiteru Fukuoka 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).

  • Low carbon resulfurized free-machining steel having high machinability
    Patent number: 8052925
    Abstract: A low carbon resulfurized free-machining steel having a high machinability is provided. This steel comprises 0.02 to 0.15% by mass of C, up to 0.004% by mass (more than 0% by mass) of Si, 0.6 to 3% by mass of Mn, 0.02 to 0.2% by mass of P, 0.2 to 1% by mass of S, up to 0.005% by mass (more than 0%) of Al, 0.008 to 0.04% by mass of O, and 0.002 to 0.03% by mass of N; and the average oxygen concentration in the MnS in the steel is at least 0.4% by mass.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: November 8, 2011
    Assignee: Kobe Steel, Ltd.
    Inventors: Koichi Sakamoto, Hiroshi Yaguchi, Atsuhiko Yoshida, Goro Anan, Yoshiteru Fukuoka
  • LOW-CARBON SULFUR-CONTAINING FREE-CUTTING STEEL WITH EXCELLENT CUTTABILITY
    Publication number: 20100104468
    Abstract: A low-carbon sulfur-containing free-cutting steel having excellent cuttability which contains 0.02-0.15 mass % C, NT up to 0.004 mass % Si (excluding 0 mass %), 0.6-3 mass % Mn, 0.02-0.2 mass % P, 0.2-1 mass % S, up to 0.005 mass % Al (excluding 0 mass %), 0.008-0.04 mass % 0, and 0.002-0.03 mass % N and in which the average oxygen concentration in the MnS is 0.4 mass % or higher.
    Type: Application
    Filed: September 7, 2006
    Publication date: April 29, 2010
    Applicant: KAB KAISHA KOBE SEIKO SHO(Kobe Steel, Ltd.)
    Inventors: Koichi Sakamoto, Hiroshi Yaguchi, Atsuhiko Yoshida, Goro Anan, Yoshiteru Fukuoka