Patents by Inventor Sho Yokoshi

Sho Yokoshi 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: 20250026688
    Abstract: A cubic boron nitride sintered body including cubic boron nitride and a binder phase, wherein content ratios of the cubic boron nitride and the binder phase are each in a specific range, the binder phase contains a Ti compound phase, an Al compound phase, and a W element-containing phase, content ratios of the Ti compound phase, the Al compound phase, and the W element-containing phase are each in a specific range, the W element-containing phase contains at least one selected from the group consisting of W2B and WB, and I2/I1, which is a ratio between an X-ray diffraction peak intensity of a (111) plane of the cubic boron nitride, I1, and a sum of X-ray diffraction peak intensities of a (211) plane of W2B and a (110) plane of WB in the binder phase, I2, is in a specific range.
    Type: Application
    Filed: July 9, 2024
    Publication date: January 23, 2025
    Applicant: TUNGALOY CORPORATION
    Inventors: Takeru SAKAMOTO, Sho YOKOSHI
  • Patent number: 8814965
    Abstract: A cubic boron nitride sintered body is excellent in wear resistance. The cubic boron nitride sintered body has about 30 to about 70% by volume of cubic boron nitride; and as the reminder, a binder phase having at least one selected from an oxide, carbide, nitride and boride of Ti, Al, Zr, Y, Ce, Mg or Ca and mutual solid solutions thereof; and inevitable impurities, wherein the cubic boron nitride sintered body contains ?-type Al2O3, ZrB2, ZrO2 and ZrO, and when an X-ray diffraction intensity of a (110) plane of ?-type Al2O3 is represented by Ia, an X-ray diffraction intensity of a (101) plane of ZrB2 is represented by Izb, and an X-ray diffraction intensity of a (111) plane of ZrO is represented by Izo, (Izb/Ia) which shows a ratio of Izb based on Ia satisfies 0.13?(Izb/Ia)?0.30, and (Izo/Ia) which shows a ratio of Izo based on Ia satisfies 0.05?(Izo/Ia)?0.20.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: August 26, 2014
    Assignee: Tungaloy Corporation
    Inventor: Sho Yokoshi
  • Publication number: 20120304544
    Abstract: A cubic boron nitride sintered body is excellent in wear resistance. The cubic boron nitride sintered body has about 30 to about 70% by volume of cubic boron nitride; and as the reminder, a binder phase having at least one selected from an oxide, carbide, nitride and boride of Ti, Al, Zr, Y, Ce, Mg or Ca and mutual solid solutions thereof; and inevitable impurities, wherein the cubic boron nitride sintered body contains ?-type Al2O3, ZrB2, ZrO2 and ZrO, and when an X-ray diffraction intensity of a (110) plane of ?-type Al2O3 is represented by Ia, an X-ray diffraction intensity of a (101) plane of ZrB2 is represented by Izb, and an X-ray diffraction intensity of a (111) plane of ZrO is represented by Izo, (Izb/Ia) which shows a ratio of Izb based on Ia satisfies 0.13?(Izb/Ia)?0.30, and (Izo/Ia) which shows a ratio of Izo based on Ia satisfies 0.05?(Izo/Ia)?0.20.
    Type: Application
    Filed: November 11, 2010
    Publication date: December 6, 2012
    Applicant: Tungaloy Corporation
    Inventor: Sho Yokoshi