Patents by Inventor Motoshi Shirai

Motoshi Shirai 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).

  • Pin mirror cutter
    Patent number: 8388269
    Abstract: A throw-away tip is mounted on a first tip mounting seat of a pin mirror cutter. In the throw-away tip, cutting edges are formed at intersecting ridgeline parts between a pair of oppositely disposed long side faces of a substantially trapezoidal flat-plate-shaped tip body, and upper and lower faces of the tip body. A thickness direction of the tip body is approximately aligned with a radial direction of the cutter body to provide curved edges formed in acute corner parts of the tip body for cutting. The tip is mounted on a second tip mounting seat of the pin mirror cutter such that the thickness direction of the tip body is approximately aligned with an axial direction of the cutter body to provide curved edges formed in obtuse corner parts of the tip body for cutting.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: March 5, 2013
    Assignee: Mitsubishi Materials Corporation
    Inventors: Syoji Takiguchi, Motoshi Shirai, Toshiyoshi Watanabe
  • PIN MIRROR CUTTER
    Publication number: 20110129308
    Abstract: A throw-away tip is mounted on a first tip mounting seat of a pin mirror cutter. In the throw-away tip, cutting edges are formed at intersecting ridgeline parts between a pair of oppositely disposed long side faces of a substantially trapezoidal flat-plate-shaped tip body, and upper and lower faces of the tip body. A thickness direction of the tip body is approximately aligned with a radial direction of the cutter body to provide curved edges formed in acute corner parts of the tip body for cutting. The tip is mounted on a second tip mounting seat of the pin mirror cutter such that the thickness direction of the tip body is approximately aligned with an axial direction of the cutter body to provide curved edges formed in obtuse corner parts of the tip body for cutting.
    Type: Application
    Filed: January 11, 2011
    Publication date: June 2, 2011
    Applicant: Mitsubishi Materials Corporation
    Inventors: Syoji Takiguchi, Motoshi Shirai, Toshiyoshi Watanabe
  • Pin mirror cutter, and throw-away tip mounted on the pin mirror cutter
    Patent number: 7938599
    Abstract: A throw-away tip is mounted on a first tip mounting seat of a pin mirror cutter. In the throw-away tip, cutting edges are formed at intersecting ridgeline parts between a pair of oppositely disposed long side faces of a substantially trapezoidal flat-plate-shaped tip body, and upper and lower faces of the tip body. A thickness direction of the tip body is approximately aligned with a radial direction of the cutter body to provide curved edges formed in acute corner parts of the tip body for cutting. The tip is mounted on a second tip mounting seat of the pin mirror cutter such that the thickness direction of the tip body is approximately aligned with an axial direction of the cutter body to provide curved edges formed in obtuse corner parts of the tip body for cutting.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: May 10, 2011
    Assignee: Mitsubishi Materials Corporation
    Inventors: Syoji Takiguchi, Motoshi Shirai, Toshiyoshi Watanabe
  • Pin mirror cutter, and throw-away tip mounted on the pin mirror cutter
    Publication number: 20070175303
    Abstract: A throw-away tip is mounted on a first tip mounting seat of a pin mirror cutter. In the throw-away tip, cutting edges are formed at intersecting ridgeline parts between a pair of oppositely disposed long side faces of a substantially trapezoidal flat-plate-shaped tip body, and upper and lower faces of the tip body. A thickness direction of the tip body is approximately aligned with a radial direction of the cutter body to provide curved edges formed in acute corner parts of the tip body for cutting. The tip is mounted on a second tip mounting seat of the pin mirror cutter such that the thickness direction of the tip body is approximately aligned with an axial direction of the cutter body to provide curved edges formed in obtuse corner parts of the tip body for cutting.
    Type: Application
    Filed: October 26, 2004
    Publication date: August 2, 2007
    Applicant: Mitsubishi Materials Corporation
    Inventors: Syoji Takiguchi, Motoshi Shirai, Toshiyoshi Watanabe