Patents by Inventor Shigetoshi YAMAGISHI

Shigetoshi YAMAGISHI 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).

  • POLYSILICON ROD AND METHOD FOR MANUFACTURING POLYSILICON ROD
    Publication number: 20240150934
    Abstract: A polysilicon rod has a diameter of 120 mm or more, the polysilicon rod having a lowest resistivity of 3300 ?cm or more and an RRG of 100% or less. A polysilicon rod has a diameter of 140 mm or more, the polysilicon rod having a lowest resistivity of 3300 ?cm or more and an RRG of 150% or less.
    Type: Application
    Filed: November 3, 2023
    Publication date: May 9, 2024
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Atsushi YOSHIDA, Naruhiro HOSHINO, Masahiko ISHIDA, Takeshi AOYAMA, Shigetoshi YAMAGISHI, Yoshio KANEKO
  • QUALITY EVALUATION METHOD, MANUFACTURING SYSTEM OF SILICON FOR EVALUATION, MANUFACTURING METHOD OF SILICON FOR EVALUATION, AND SILICON FOR EVALUATION
    Publication number: 20230236165
    Abstract: A quality evaluation method has a step of producing a silicon for evaluation in which a single crystal silicon is grown to extend radially from a core wire 9 while polycrystalline silicon is grown in a reactor 20; and a step of performing an evaluation using the single crystal silicon.
    Type: Application
    Filed: December 23, 2022
    Publication date: July 27, 2023
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Naruhiro HOSHINO, Shigetoshi YAMAGISHI, Atsushi YOSHIDA, Masahiko ISHIDA