Patents by Inventor Hisataka Toyoshima

Hisataka Toyoshima 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).

  • Raw or granulated powder for sintering, and their sintered compacts
    Patent number: 7163569
    Abstract: An object of the present invention is to provide a low-alloyed steel powder for sintering that can yield a sintered compact with high density and uniform characteristics, and to provide a sintered compact having such characteristics. The present invention is a raw powder for sintering, comprising Fe as its primary component and also comprising 0.8 wt % or less of C, 0.05 to 1.0 wt % of Si, 1.0 wt % or less of Mn, and 1.0 to 10.0 wt % or less of Ni, wherein the mean grain size of the raw powder for sintering is 8.5 ?m or less; and is also a granulated powder for sintering obtained by granulating the raw powder for sintering by means of a binder.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: January 16, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hisataka Toyoshima, Atsushi Watanabe
  • Raw or granulated powder for sintering, and their sintered compacts
    Publication number: 20050109157
    Abstract: An object of the present invention is to provide a low-alloyed steel powder for sintering that can yield a sintered compact with high density and uniform characteristics, and to provide a sintered compact having such characteristics. The present invention is a raw powder for sintering, comprising Fe as its primary component and also comprising 0.8 wt % or less of C, 0.05 to 1.0 wt % of Si, 1.0 wt % or less of Mn, and 1.0 to 10.0 wt % or less of Ni, wherein the mean grain size of the raw powder for sintering is 8.5 ?m or less; and is also a granulated powder for sintering obtained by granulating the raw powder for sintering by means of a binder.
    Type: Application
    Filed: February 27, 2004
    Publication date: May 26, 2005
    Inventors: Hisataka Toyoshima, Atsushi Watanabe