Patents by Inventor Sadateru Nakamatsu

Sadateru Nakamatsu 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).

  • Abrasive tool
    Patent number: 11819979
    Abstract: An abrasive tool has an abrasive grain layer comprising a plurality of hard abrasive grains bonded by a binder, with a plurality of the hard abrasive grains each having a working surface formed to contact a workpiece, a ratio of a total area of a plurality of such working surfaces to an area of an imaginary plane smoothly connecting the plurality of working surfaces being 5% or more and 30% or less.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: November 21, 2023
    Assignee: A.L.M.T. Corp.
    Inventor: Sadateru Nakamatsu
  • ABRASIVE TOOL
    Publication number: 20190054592
    Abstract: An abrasive tool has an abrasive grain layer comprising a plurality of hard abrasive grains bonded by a binder, with a plurality of the hard abrasive grains each having a working surface formed to contact a workpiece, a ratio of a total area of a plurality of such working surfaces to an area of an imaginary plane smoothly connecting the plurality of working surfaces being 5% or more and 30% or less.
    Type: Application
    Filed: December 7, 2016
    Publication date: February 21, 2019
    Inventor: Sadateru Nakamatsu