Patents by Inventor Yoko Yokoyama

Yoko Yokoyama 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).

  • Patent number: 9786556
    Abstract: According to an embodiment, a manufacturing method of a semiconductor device includes forming, on a film to be processed, a plurality of first core material patterns and a plurality of second core material patterns. Each of the second core material patterns is drawn from an end portion of the corresponding first core material pattern. The manufacturing method includes forming an opening pattern having one or a plurality of openings in the second core material pattern so that a first distance and a second distance are less than a predetermined distance. The first distance is a distance between an edge of the second core material pattern at a side of an adjacent first core material pattern and the opening pattern. The second distance is a distance between an edge of the second core material pattern at a side of an adjacent second core material pattern and the opening pattern.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: October 10, 2017
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Weiting Wang, Fumiharu Nakajima, Yoko Yokoyama, Sadatoshi Murakami
  • Publication number: 20170133267
    Abstract: According to an embodiment, a manufacturing method of a semiconductor device includes forming, on a film to be processed, a plurality of first core material patterns and a plurality of second core material patterns. Each of the second core material patterns is drawn from an end portion of the corresponding first core material pattern. The manufacturing method includes forming an opening pattern having one or a plurality of openings in the second core material pattern so that a first distance and a second distance are less than a predetermined distance. The first distance is a distance between an edge of the second core material pattern at a side of an adjacent first core material pattern and the opening pattern. The second distance is a distance between an edge of the second core material pattern at a side of an adjacent second core material pattern and the opening pattern.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Weiting Wang, Fumiharu Nakajima, Yoko Yokoyama, Sadatoshi Murakami
  • Patent number: 9646982
    Abstract: According to an embodiment, a manufacturing method of a semiconductor device includes forming, on a film to be processed, a plurality of first core material patterns and a plurality of second core material patterns. Each of the second core material patterns is drawn from an end portion of the corresponding first core material pattern. The manufacturing method includes forming an opening pattern having one or a plurality of openings in the second core material pattern so that a first distance and a second distance are less than a predetermined distance. The first distance is a distance between an edge of the second core material pattern at a side of an adjacent first core material pattern and the opening pattern. The second distance is a distance between an edge of the second core material pattern at a side of an adjacent second core material pattern and the opening pattern.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: May 9, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Weiting Wang, Fumiharu Nakajima, Yoko Yokoyama, Sadatoshi Murakami
  • Publication number: 20160071859
    Abstract: According to an embodiment, a manufacturing method of a semiconductor device includes forming, on a film to be processed, a plurality of first core material patterns and a plurality of second core material patterns. Each of the second core material patterns is drawn from an end portion of the corresponding first core material pattern. The manufacturing method includes forming an opening pattern having one or a plurality of openings in the second core material pattern so that a first distance and a second distance are less than a predetermined distance. The first distance is a distance between an edge of the second core material pattern at a side of an adjacent first core material pattern and the opening pattern. The second distance is a distance between an edge of the second core material pattern at a side of an adjacent second core material pattern and the opening pattern.
    Type: Application
    Filed: February 26, 2015
    Publication date: March 10, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Weiting WANG, Fumiharu Nakajima, Yoko Yokoyama, Sadatoshi Murakami
  • Publication number: 20150074618
    Abstract: In a design layout correcting method of an embodiment, a design layout of a circuit pattern is divided to a first mask pattern and a second mask pattern. The mask pattern of the pattern defect area of the first or second mask pattern is set as the correcting target pattern. A correcting target region and a verifying region are set within the first or second mask pattern. The correcting target pattern is corrected within the correcting target region, and the first and second mask patterns are verified within the verifying region.
    Type: Application
    Filed: February 27, 2014
    Publication date: March 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoko Yokoyama, Keishi Sakanushi, Chikaaki Kodama
  • Patent number: 8972907
    Abstract: In a design layout correcting method of an embodiment, a design layout of a circuit pattern is divided to a first mask pattern and a second mask pattern. The mask pattern of the pattern defect area of the first or second mask pattern is set as the correcting target pattern. A correcting target region and a verifying region are set within the first or second mask pattern. The correcting target pattern is corrected within the correcting target region, and the first and second mask patterns are verified within the verifying region.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: March 3, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoko Yokoyama, Keishi Sakanushi, Chikaaki Kodama
  • Patent number: D1030999
    Type: Grant
    Filed: January 27, 2023
    Date of Patent: June 11, 2024
    Assignee: SARAYA CO., LTD.
    Inventor: Yoko Yokoyama