Patents by Inventor Tomohiro YAMAMATO

Tomohiro YAMAMATO 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).

  • Boron structure and boron powder of high purity
    Patent number: 11091371
    Abstract: A boron structure body includes boron having each concentration of Ti, Al, Fe, Cr, Ni, Co, Cu, W, Ta, Mo and Nb being 0.1 ppmw or less and having a thickness of 0.8 to 5 mm. The boron structure body may have a tubular shape, and when used as a doping agent, a ratio of 11B that is an isotope may be 95 mass % or more. The boron structure body can be easily crushed, and a high-purity boron powder having an average particle diameter of 0.5 to 3 mm and having each metal impurity concentration of 0.3 ppmw or less can be obtained.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 17, 2021
    Assignee: Tokuyama Corporation
    Inventors: Junya Sakai, Tomohiro Yamamato, Yuuki Yoshioka, Shouji Fujii
  • Boron Structure and Boron Powder
    Publication number: 20200317531
    Abstract: A boron structure body includes boron having each concentration of Ti, Al, Fe, Cr, Ni, Co, Cu, W, Ta, Mo and Nb being 0.1 ppmw or less and having a thickness of 0.8 to 5 mm. The boron structure body may have a tubular shape, and when used as a doping agent, a ratio of 11B that is an isotope may be 95 mass % or more. The boron structure body can be easily crushed, and a high-purity boron powder having an average particle diameter of 0.5 to 3 mm and having each metal impurity concentration of 0.3 ppmw or less can be obtained.
    Type: Application
    Filed: October 12, 2018
    Publication date: October 8, 2020
    Applicant: Tokuyama Corporation
    Inventors: Junya SAKAI, Tomohiro YAMAMATO, Yuuki YOSHIOKA, Shouji FUJII