Patents by Inventor Syoji Nishimon

Syoji Nishimon 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).

  • Lead-free steel for machine structural use with excellent machinability and low strength anisotropy
    Patent number: 7445680
    Abstract: A lead-free steel for machine structural use with excellent machinability and low strength an isotropy, which does not contain Pb and is equal to or higher than a conventional D Pb-containing free cutting steel in properties, is provided. This steel includes, on the weight basis, C: 0.10 to 0.65%; Si: 0.03 to 1.00%; Mn: 0.30 to 2.50%; S: 0.03 to 0.35%; Cr: 0.1 to 2.0%; Al: less than 0.010%; Ca: 0.0005 to 0.020%; Mg: 0.0003 to 0.020%; 0: less than 20 ppm; and the balance being Fe and inevitable impurities.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: November 4, 2008
    Assignee: Sanyo Special Steel Co., Ltd.
    Inventors: Naoki Iwama, Susumu Owaki, Masao Uchiyama, Isao Fujii, Syoji Nishimon, Norimasa Tsunekage, Kazuhiro Kobayashi, Motohide Mori, Kazutaka Ogo, Kunio Naito
  • Lead-free steel for machine structural use with excellent machinability and low strength anisotropy
    Patent number: 7195736
    Abstract: A lead-free steel for machine structural use with excellent machinability and low strength anisotropy, which does not contain Pb and is equal to or higher than a conventional Pb-containing free cutting steel in properties, is provided. This steel includes, on the weight basis, C: 0.10 to 0.65%; Si: 0.03 to 1.00%; Mn: 0.30 to 2.50%; S: 0.03 to 0.35%; Cr: 0.1 to 2.0%; Al: less than 0.010%; Ca: 0.0005 to 0.020%; Mg: 0.0003 to 0.020%; O: less than 20 ppm; and the balance being Fe and inevitable impurities.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: March 27, 2007
    Assignee: Sanyo Special Steel Co., Ltd.
    Inventors: Naoki Iwama, Susumu Owaki, Masao Uchiyama, Isao Fujii, Syoji Nishimon, Norimasa Tsunekage, Kazuhiro Kobayashi, Motohide Mori, Kazutaka Ogo, Kunio Naito
  • Lead-free steel for machine structural use with excellent machinability low strength anisotropy
    Publication number: 20050058567
    Abstract: A lead-free steel for machine structural use with excellent machinability and low strength an isotropy, which does not contain Pb and is equal to or higher than a conventional D Pb-containing free cutting steel in properties, is provided. This steel includes, on the weight basis, C: 0.10 to 0.65%; Si: 0.03 to 1.00%; Mn: 0.30 to 2.50%; S: 0.03 to 0.35%; Cr: 0.1 to 2.0%; Al: less than 0.010%; Ca: 0.0005 to 0.020%; Mg: 0.0003 to 0.020%; 0: less than 20 ppm; and the balance being Fe and inevitable impurities.
    Type: Application
    Filed: August 6, 2004
    Publication date: March 17, 2005
    Applicant: SANYO SPECIAL STEEL CO., LTD.
    Inventors: Naoki Iwama, Susumu Owaki, Masao Uchiyama, Isao Fujii, Syoji Nishimon, Norimasa Tsunekage, Kazuhiro Kobayashi, Motohide Mori, Kazutaka Ogo, Kunio Naito