Patents by Inventor Kotaro Ishita

Kotaro Ishita 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).

  • SiC single crystal manufacturing apparatus
    Patent number: 11761113
    Abstract: The present invention provides a SiC single crystal manufacturing apparatus, including a crystal growth vessel which has a source loading portion to hold a SiC source, and a lid which is provided with a seed crystal support to hold a seed crystal; an insulating material which has at least one through-hole and covers the crystal growth vessel; a heater which is configured to heat the crystal growth vessel; and a temperature measuring instrument which is configured to measure the temperature of the crystal growth vessel through the through-hole, wherein the inner wall surface of the through-hole of the insulating material is coated with a coating material which contains a heat-resistant metal carbide or a heat-resistant metal nitride.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: September 19, 2023
    Assignee: Resonac Corporation
    Inventor: Kotaro Ishita
  • SiC SINGLE CRYSTAL MANUFACTURING APPARATUS
    Publication number: 20200080227
    Abstract: The present invention provides a SiC single crystal manufacturing apparatus, including a crystal growth vessel which has a source loading portion to hold a SiC source, and a lid which is provided with a seed crystal support to hold a seed crystal; an insulating material which has at least one through-hole and covers the crystal growth vessel; a heater which is configured to heat the crystal growth vessel; and a temperature measuring instrument which is configured to measure the temperature of the crystal growth vessel through the through-hole, wherein the inner wall surface of the through-hole of the insulating material is coated with a coating material which contains a heat-resistant metal carbide or a heat-resistant metal nitride.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 12, 2020
    Applicant: SHOWA DENKO K.K.
    Inventor: Kotaro Ishita