Patents by Inventor Shinzoh Mitomi

Shinzoh Mitomi 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).

  • Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices
    Patent number: 9293154
    Abstract: An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The Al2O3—TiC based substrate for a thin-film magnetic head including an Al2O3 phase and a TiC phase, wherein a c-axis lattice constant of the Al2O3 phase is 12.992 ? or more and 12.998 ? or less, and a lattice constant of the TiC phase is 4.297 ? or more and 4.315 ? or less.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 22, 2016
    Assignees: NIPPON TUNGSTEN CO., LTD., HITACHI METALS, LTD.
    Inventors: Yusuke Hara, Shinzoh Mitomi, Shigeru Matsuo, Hidetaka Sakumichi
  • Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices
    Patent number: 9293156
    Abstract: An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The Al2O3—TiC based substrate for a thin-film magnetic head including an Al2O3 phase and a TiC phase, wherein a c-axis lattice constant of the Al2O3 phase is 12.992 ? or more and 12.998 ? or less, and a lattice constant of the TiC phase is 4.317 ? or more and 4.325 ? or less.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 22, 2016
    Assignees: NIPPON TUNGSTEN CO., LTD., HITACHI METALS, LTD.
    Inventors: Yusuke Hara, Shinzoh Mitomi, Shigeru Matsuo, Hidetaka Sakumichi
  • Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices
    Patent number: 9293155
    Abstract: An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The Al2O3—TiC based substrate for a thin-film magnetic head including an Al2O3 phase and a TiC phase, wherein a c-axis lattice constant of the Al2O3 phase is 12.985 ? or more and 12.992 ? or less, and a lattice constant of the TiC phase is 4.297 ? or more and 4.325 ? or less.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 22, 2016
    Assignees: NIPPON TUNGSTEN CO., LTD., HITACHI METALS, LTD.
    Inventors: Yusuke Hara, Shinzoh Mitomi, Shigeru Matsuo, Hidetaka Sakumichi
  • SUBSTRATES FOR THIN-FILM MAGNETIC HEADS, MAGNETIC HEAD SLIDERS, AND HARD DISK DRIVE DEVICES
    Publication number: 20150380025
    Abstract: An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The Al2O3—TiC based substrate for a thin-film magnetic head including an Al2O3 phase and a TiC phase, wherein a c-axis lattice constant of the Al2O3 phase is 12.992 ? or more and 12.998 ? or less, and a lattice constant of the TiC phase is 4.317 ? or more and 4.325 ? or less.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Yusuke HARA, Shinzoh Mitomi, Shigeru Matsuo, Hidetaka Sakumichi
  • SUBSTRATES FOR THIN-FILM MAGNETIC HEADS, MAGNETIC HEAD SLIDERS, AND HARD DISK DRIVE DEVICES
    Publication number: 20150380023
    Abstract: An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The Al2O3—TiC based substrate for a thin-film magnetic head including an Al2O3 phase and a TiC phase, wherein a c-axis lattice constant of the Al2O3 phase is 12.992 ? or more and 12.998 ? or less, and a lattice constant of the TiC phase is 4.297 ? or more and 4.315 ? or less.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Yusuke HARA, Shinzoh MITOMI, Shigeru MATSUO, Hidetaka SAKUMICHI
  • SUBSTRATES FOR THIN-FILM MAGNETIC HEADS, MAGNETIC HEAD SLIDERS, AND HARD DISK DRIVE DEVICES
    Publication number: 20150380024
    Abstract: An AlTiC-based substrate suitable for a thin-film magnetic head is provided. The Al2O3-TiC based substrate for a thin-film magnetic head including an Al2O3 phase and a TiC phase, wherein a c-axis lattice constant of the Al2O3 phase is 12.985 ? or more and 12.992 ? or less, and a lattice constant of the TiC phase is 4.297 ? or more and 4.325 ? or less.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Yusuke HARA, Shinzoh MITOMI, Shigeru MATSUO, Hidetaka SAKUMICHI
  • MATERIAL OF CERAMIC SUBSTRATE FOR THIN-FILM MAGNETIC HEAD
    Publication number: 20090068498
    Abstract: A ceramic substrate material has good thermal conductivity and machinability, which are high enough to apply it to thin-film magnetic heads, and low particle generation. A ceramic substrate material for a thin-film magnetic head includes 25 vol % to 70 vol % of WC and the balance consisting essentially of Al2O3. The WC includes at most 0.1 mass % of a metal, at most 0.5 mass % of oxygen and at most 0.5 mass % of nitrogen. And the WC has a mean particle size of 0.6 ?m or less.
    Type: Application
    Filed: April 7, 2006
    Publication date: March 12, 2009
    Applicants: HITACHI METALS, LTD., NIPPON TUNGSTEN CO., LTD.
    Inventors: Hidetaka Sakumichi, Shinzoh Mitomi