Patents by Inventor Atsuyoshi Katayama

Atsuyoshi Katayama 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).

  • Annular grinding stone
    Patent number: 10836014
    Abstract: An annular grinding stone is provided which includes a cutting edge with a plurality of V-shaped slits defined in an outer circumferential portion thereof is provided. Each of the V-shaped slits is defined by a first surface and a second surface of the annular cutting edge. The first surface is positioned rearwardly of the second surface with respect to a direction along which the annular grinding stone rotates, and the second surface is positioned forwardly of the first surface with respect to the direction along which the annular grinding stone rotates. The first surface lies perpendicularly to the direction along which the annular grinding stone rotates at a radially outer end thereof and parallel to thicknesswise directions of the annular cutting edge. The second surface is inclined with respect to the first surface at an angle ranging from 30° to 60°.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: November 17, 2020
    Assignee: DISCO CORPORATION
    Inventors: Atsuyoshi Katayama, Takeshi Onodera, Yoshinori Yaguchi
  • ANNULAR GRINDING STONE
    Publication number: 20190001466
    Abstract: An annular grinding stone is provided which includes a cutting edge with a plurality of V-shaped slits defined in an outer circumferential portion thereof is provided. Each of the V-shaped slits is defined by a first surface and a second surface of the annular cutting edge. The first surface is positioned rearwardly of the second surface with respect to a direction along which the annular grinding stone rotates, and the second surface is positioned forwardly of the first surface with respect to the direction along which the annular grinding stone rotates. The first surface lies perpendicularly to the direction along which the annular grinding stone rotates at a radially outer end thereof and parallel to thicknesswise directions of the annular cutting edge. The second surface is inclined with respect to the first surface at an angle ranging from 30° to 60°.
    Type: Application
    Filed: June 22, 2018
    Publication date: January 3, 2019
    Inventors: Atsuyoshi Katayama, Takeshi Onodera, Yoshinori Yaguchi