Patents by Inventor Keita Hishikawa

Keita Hishikawa 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).

  • Ink composition for plasma processing detection, and indicator for plasma processing detection using said ink composition
    Patent number: 10180413
    Abstract: The present invention provides an ink composition for forming a color-changing layer that changes color by plasma treatment, the ink composition exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by plasma treatment being suppressed to the extent that electronic device properties are not affected. The invention provides an ink composition for forming a color-changing layer that changes color by plasma treatment, the ink composition comprising metal oxide particles containing at least one element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi, and a binder resin.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: January 15, 2019
    Assignee: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Keita Hishikawa, Kazuhiro Uneyama
  • Plasma processing detection indicator using inorganic substance as a color-change layer
    Patent number: 10180392
    Abstract: The present invention provides a plasma treatment detection indicator including a color-changing layer that changes color by plasma treatment, exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by the plasma treatment being suppressed to such a degree as to not affect the electronic device properties. Specifically, the present invention provides a plasma treatment detection indicator including a color-changing layer that changes color by plasma treatment, the color-changing layer containing at least one metal element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi in the form of a simple substance and/or an inorganic compound containing at least one metal element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: January 15, 2019
    Assignee: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Yu Yamakawa, Kazuhiro Uneyama, Keita Hishikawa, Masayuki Nishi, Masahiro Shimizu
  • PLASMA-PROCESSING DETECTION INDICATOR IN WHICH METAL OXIDE FINE PARTICLES ARE USED AS COLOR-CHANGE LAYER
    Publication number: 20170330777
    Abstract: The present invention provides a plasma treatment detection indicator including a color-changing layer that changes color by plasma treatment, exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by the plasma treatment being suppressed to the extent that electronic device properties are not affected. Specifically, the present invention provides a plasma treatment detection indicator comprising a color-changing layer that changes color by plasma treatment, the color-changing layer comprising metal oxide fine particles containing at least one element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi, the metal oxide fine particles having a mean particle size of 50 ?m or less.
    Type: Application
    Filed: November 24, 2015
    Publication date: November 16, 2017
    Applicant: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Keita Hishikawa, Kazuhiro Uneyama
  • INK COMPOSITION FOR PLASMA PROCESSING DETECTION, AND INDICATOR FOR PLASMA PROCESSING DETECTION USING SAID INK COMPOSITION
    Publication number: 20170261476
    Abstract: The present invention provides an ink composition for forming a color-changing layer that changes color by plasma treatment, the ink composition exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by plasma treatment being suppressed to the extent that electronic device properties are not affected. The invention provides an ink composition for forming a color-changing layer that changes color by plasma treatment, the ink composition comprising metal oxide particles containing at least one element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi, and a binder resin.
    Type: Application
    Filed: November 24, 2015
    Publication date: September 14, 2017
    Applicant: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Keita Hishikawa, Kazuhiro Uneyama
  • PLASMA PROCESSING DETECTION INDICATOR USING INORGANIC SUBSTANCE AS A COLOR-CHANGE LAYER
    Publication number: 20170153174
    Abstract: The present invention provides a plasma treatment detection indicator including a color-changing layer that changes color by plasma treatment, exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by the plasma treatment being suppressed to such a degree as to not affect the electronic device properties. Specifically, the present invention provides a plasma treatment detection indicator including a color-changing layer that changes color by plasma treatment, the color-changing layer containing at least one metal element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi in the form of a simple substance and/or an inorganic compound containing at least one metal element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi.
    Type: Application
    Filed: April 22, 2015
    Publication date: June 1, 2017
    Applicant: SAKURA COLOR PRODUCTS CORPORATION
    Inventors: Yu Yamakawa, Kazuhiro Uneyama, Keita Hishikawa, Masayuki Nishi, Masahiro Shimizu