Patents by Inventor Masakazu Hamaji

Masakazu Hamaji 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).

  • Publication number: 20240145212
    Abstract: An electron beam lithography apparatus-includes: a density set storage unit that stores, for each of pieces of figure information, a set of pieces of first density information corresponding to areas occupied by a figure in first small regions divided from a figure region specified by the piece of figure information; a density set acquisition unit that acquires first density sets respectively corresponding to the pieces of figure information from the density set storage unit; a correction amount acquisition unit that acquires correction amounts corresponding to the first density sets for each of the pieces of figure information, and are for the second small regions; an emission amount acquisition unit that acquires, for the second small regions, emission amounts of an electron beam with intensities corresponding to the correction amounts for the second small regions; and a drawing unit that emits an electron beam according to the emission amounts.
    Type: Application
    Filed: December 24, 2021
    Publication date: May 2, 2024
    Inventors: Masakazu HAMAJI, Issei MASUMOTO, Natsuki SUZUKI
  • Patent number: 9430607
    Abstract: An electron beam drawing apparatus includes: an accepting unit that accepts input graphic information, which is information representing at least one graphic; a graphic width acquiring unit that acquires a width of each of the at least one graphic represented by the input graphic information; a generating unit that generates approximate graphic information representing at least one approximate graphic, which is a graphic configured by at least one rectangle matching the width of the graphic, and is a graphic that approximates each of the at least one graphic represented by the input graphic information; and a drawing unit that draws the at least one approximate graphic represented by the approximate graphic information generated by the generating unit.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: August 30, 2016
    Assignee: NIPPON CONTROL SYSTEM CORPORATION
    Inventors: Takuya Tao, Masakazu Hamaji
  • Publication number: 20150178439
    Abstract: An electron beam drawing apparatus includes: an accepting unit that accepts input graphic information, which is information representing at least one graphic; a graphic width acquiring unit that acquires a width of each of the at least one graphic represented by the input graphic information; a generating unit that generates approximate graphic information representing at least one approximate graphic, which is a graphic configured by at least one rectangle matching the width of the graphic, and is a graphic that approximates each of the at least one graphic represented by the input graphic information; and a drawing unit that draws the at least one approximate graphic represented by the approximate graphic information generated by the generating unit.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 25, 2015
    Inventors: Takuya Tao, Masakazu Hamaji