Patents by Inventor Masaki Minabe

Masaki Minabe 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).

  • Compressor scroll made of silicon containing aluminum alloy
    Patent number: 5478220
    Abstract: The present invention provides an Al--Si based sintered alloy of high strength and high ductility, a method for production thereof and use thereof. The alloy comprises 1-45% of Si, 0.1-20% of an element of Group IIIa, 0.01-5% of at least one element of Groups IVa and Va, the balance of substantially Al. This alloy can further contain at least one of 0.01-5% of Cu, 0.01-5% of Mg, 2.0% or less of Fe, 1.5% or less of Mn and 1.5% or less of Co and the oxygen content is reduced to 0.15% or less by sintering under vacuum. The present invention is applied to automobile parts such as a piston and scroll compressors. The alloy has a tensile strength of about 40 kg/mm.sup.2 or higher and an elongation of 1.5% or more at 150.degree. C.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: December 26, 1995
    Assignees: Hitachi, Ltd., Hitachi Powdered Metals Co., Ltd.
    Inventors: Yasuo Kamitsuma, Yusaku Nakagawa, Mitsuo Chigasaki, Tadashi Iizuka, Kooichi Inaba, Keiichi Nakamura, Masaki Minabe, Tsuyoshi Kagaya
  • Highly ductile sintered aluminum alloy, method for production thereof and use thereof
    Patent number: 5387272
    Abstract: The present invention provides an Al-Si based sintered alloy of high strength and high ductility, a method for production thereof and use thereof. The alloy comprises 1-45% of Si, 0.1-20% of an element of Group IIIa, 0.01-5% of at least one element of Groups IVa and Va, the balance of substantially Al. This alloy can further contain at least one of 0.01-5% of Cu, 0.01-5% of Mg, 2.0% or less of Fe, 1.5% or less of Mn and 1.5% or less of Co and the oxygen content is reduced to 0.15% or less by sintering under vacuum. The present invention is applied to automobile parts such as a piston and scroll compressors. The alloy has a tensile strength of about 40 kg/mm.sup.2 or higher and an elongation of 1.5% or more at 150.degree. C.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: February 7, 1995
    Assignees: Hitachi, Ltd., Hitachi Powdered Metals Company, Limited
    Inventors: Yasuo Kamitsuma, Yusaku Nakagawa, Mitsuo Chigasaki, Tadashi Iizuka, Kooichi Inaba, Keiichi Nakamura, Masaki Minabe, Tsuyoshi Kagaya