Patents by Inventor Teruyuki Kumazawa

Teruyuki Kumazawa 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).

  • Super abrasive wheel with dispensing capability, method of manufacturing wafer using the same, and wafer
    Patent number: 9011206
    Abstract: The super abrasive wheel includes a core rotating around a rotation axis and a super abrasive layer bonded to the core. The core has a first surface and a second surface located opposite to the first surface. An annular first protrusion portion protruding in the direction away from the first surface is provided at a portion of the second surface that is surrounded with the super abrasive layer. A reference surface is provided in the second surface on the inside of the first protrusion portion. The height from the reference surface to the first protrusion portion is denoted as A. A top portion having the height B from the reference surface is provided at a portion of the second surface between the first protrusion portion and the super abrasive layer. The height B is greater than the height A.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 21, 2015
    Assignee: A.L.M.T. Corp.
    Inventors: Tomohiro Ishizu, Yukio Okanishi, Teruyuki Kumazawa
  • SUPER ABRASIVE WHEEL, METHOD OF MANUFACTURING WAFER USING THE SAME, AND WAFER
    Publication number: 20120288677
    Abstract: The super abrasive wheel includes a core rotating around a rotation axis and a super abrasive layer bonded to the core. The core has a first surface and a second surface located opposite to the first surface. An annular first protrusion portion protruding in the direction away from the first surface is provided at a portion of the second surface that is surrounded with the super abrasive layer. A reference surface is provided in the second surface on the inside of the first protrusion portion. The height from the reference surface to the first protrusion portion is denoted as A. A top portion having the height B from the reference surface is provided at a portion of the second surface between the first protrusion portion and the super abrasive layer. The height B is greater than the height A.
    Type: Application
    Filed: June 9, 2010
    Publication date: November 15, 2012
    Inventors: Tomohiro Ishizu, Yukio Okanishi, Teruyuki Kumazawa