Patents by Inventor Hiroaki Maedono

Hiroaki Maedono 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).

  • Copper alloy water supply member
    Patent number: 7819992
    Abstract: A member for water works is proposed in which the content of lead is limited to a very small values while maintaining its mechanical properties, castability, machinability, pressure resistance, etc. to levels equivalent to those of conventional copper alloys containing lead. A copper alloy is produced which contains not less than 2.0% by weight and not more than 5.9% by weight of tin, not less than 1.5% by weight and not more than 5.0% by weight of nickel, not less than 5.0% by weight and not more than 12.1% by weight of zinc, not less than 0.4% by weight and not more than 3.3% by weight of bismuth, and not less than 0.009% by weight and not more than 0.15% by weight of phosphorus, the balance being copper and impurities.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: October 26, 2010
    Assignee: Kurimoto, Ltd.
    Inventors: Masaaki Yamamoto, Yoshimasa Hirai, Hiroaki Maedono, Chizuko Maedono, legal representative
  • Copper Alloy Water Supply Member
    Publication number: 20080286142
    Abstract: A member for water works is proposed in which the content of lead is limited to a very small values while maintaining its mechanical properties, castability, machinability, pressure resistance, etc. to levels equivalent to those of conventional copper alloys containing lead. A copper alloy is produced which contains not less than 2.0% by weight and not more than 5.9% by weight of tin, not less than 1.5% by weight and not more than 5.0% by weight of nickel, not less than 5.0% by weight and not more than 12.1% by weight of zinc, not less than 0.4% by weight and not more than 3.3% by weight of bismuth, and not less than 0.009% by weight and not more than 0.15% by weight of phosphorus, the balance being copper and impurities.
    Type: Application
    Filed: June 20, 2006
    Publication date: November 20, 2008
    Applicant: KURIMOTO, LTD.
    Inventors: Masaaki Yamamoto, Yoshimasa Hirai, Hiroaki Maedono, Chizuko Maedono