Patents by Inventor Kazutoshi SHIRATSUCHI

Kazutoshi SHIRATSUCHI 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: 20230373843
    Abstract: An apparatus for manufacturing an optical fiber preform, the apparatus including: a reaction vessel in which an initial substrate is arranged; a burner that can be inserted from an opening of the reaction vessel to spray a glass soot on the initial substrate in the reaction vessel; and a sealing member that has an internal space for accommodating the burner, and is extendable in accordance with a position of the burner and airtightly connects the opening and the internal space.
    Type: Application
    Filed: August 4, 2023
    Publication date: November 23, 2023
    Inventor: Kazutoshi SHIRATSUCHI