Patents by Inventor Hironori ATSUMI

Hironori ATSUMI 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: 20210217648
    Abstract: A susceptor which is used in a chemical vapor deposition apparatus for growing an epitaxial layer on a principal plane of a wafer by a chemical vapor deposition method, and which includes a base; and three protrusion parts that are disposed on an outer circumferential part of the base and support an outer circumferential part of the wafer, is provided.
    Type: Application
    Filed: March 24, 2021
    Publication date: July 15, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Jia Yu, Naoto Ishibashi, Keisuke Fukada, Yoshikazu Umeta, Hironori Atsumi
  • Publication number: 20210066113
    Abstract: A susceptor (1) of the present invention is a susceptor that is configured to hold a wafer in a CVD apparatus that forms a layer on a wafer through chemical vapor deposition, and includes an external susceptor (2) and an internal susceptor (1). The external susceptor (2) has an opening (2c) that accommodates the internal susceptor (1) in a coupling manner and has a wafer placement surface (2a) on which an outer peripheral portion (Ws) of a wafer is placed. The internal susceptor (1) includes a projection portion (1a) on a surface (1b) facing the wafer (W), and a height (h) of the projection portion (1a) is a height at which the projection portion does not come into contact with the wafer (W) when the wafer (W) is placed on the susceptor.
    Type: Application
    Filed: June 22, 2018
    Publication date: March 4, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoshikazu UMETA, Keisuke FUKADA, Naoto ISHIBASHI, Hironori ATSUMI
  • Publication number: 20200173023
    Abstract: A SiC chemical vapor deposition apparatus is provided, including: a furnace body inside of which a growth space is formed; and a mounting table which is positioned on a lower portion of the growth space and has a mounting surface on which a SiC wafer is mounted, in which the furnace body is separated into a plurality of members in a vertical direction substantially orthogonal to the mounting table, the plurality of members includes a first portion and a second portion, the first portion includes a protruding part that protrudes in an outer peripheral direction, the second portion includes a hook part on which the protruding part is hung, and the first portion and the second portion are connected to each other by hanging the hook part on the protruding part.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 4, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoshikazu UMETA, Hironori ATSUMI
  • Publication number: 20200173053
    Abstract: A SiC epitaxial growth apparatus according to an embodiment includes a mounting stand on which a SiC wafer is mounted, and a furnace body which is configured to cover the mounting stand, and the furnace body includes a raw material gas supply port which is positioned so as to face the mounting stand and is configured to supply a raw material gas to the growth space, a first purge gas supply port which surrounds a vicinity of the raw material gas supply port and is configured to supply a purge gas to the growth space, and a second purge gas supply port which surrounds a vicinity of the first purge gas supply port and is configured to supply a purge gas to the growth space.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 4, 2020
    Applicant: SHOWA DENKO K.K
    Inventors: Yoshikazu Umeta, Hironori Atsumi
  • Publication number: 20200118849
    Abstract: According to an aspect of the present invention, there is provided a deposition apparatus including: a reaction space which is a reaction chamber; a front chamber for deposition; a raw material supply port that is configured to supply a raw material to the reaction space; an opening for measuring a temperature of a wafer mounted on a wafer mounting surface of a mounting stage disposed in the reaction space; and a partition plate that partitions the reaction space and the front chamber for deposition, in which the raw material supply port is positioned on the same plane as the partition plate or on the reaction space side from the partition plate, and the opening is positioned in the front chamber for deposition side from the partition plate.
    Type: Application
    Filed: May 9, 2018
    Publication date: April 16, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Keisuke FUKADA, Naoto ISHIBASHI, Hironori ATSUMI
  • Publication number: 20200083085
    Abstract: A susceptor which is used in a chemical vapor deposition apparatus for growing an epitaxial layer on a principal plane of a wafer by a chemical vapor deposition method, and which includes a base; and three protrusion parts that are disposed on an outer circumferential part of the base and support an outer circumferential part of the wafer, is provided.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 12, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Jia YU, Naoto ISHIBASHI, Keisuke FUKADA, Yoshikazu UMETA, Hironori ATSUMI
  • Publication number: 20180371640
    Abstract: A wafer supporting mechanism including: a wafer supporting table; and a movable part supported by the wafer supporting table, wherein the wafer supporting table includes a wafer supporting portion for transfer that stands up from a first surface opposing a back surface of a wafer to be placed and is provided further toward an inner side than an outer peripheral edge of the wafer to be placed, and the movable part includes a wafer supporting portion for film formation that is positioned further toward an outer peripheral side of the wafer to be placed than the wafer supporting portion for transfer and is relatively movable with respect to the wafer supporting table in a standing direction of the wafer supporting portion for transfer.
    Type: Application
    Filed: December 12, 2016
    Publication date: December 27, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Jia YU, Naoto ISHIBASHI, Keisuke FUKADA, Tomoya UTASHIRO, Hironori ATSUMI