Patents by Inventor Shunji Iwago

Shunji Iwago 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).

  • Patent number: 6386427
    Abstract: In the present invention, by the method using a backing material such as copper, which is not melted by a welding heat source, in an end face of a member without using a backing metal or consumable backing material at a joint welding time, overlay welding is performed to increase a plate thickness and a plate width. Thereafter, edge preparation including a member of a designed joint weld location and an overlay weld is performed, and the groove processed portion is placed to an opponent member to provide joint welding in order to obtain an effective throat depth more than a plate thickness and a plate width of the member.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: May 14, 2002
    Assignee: Machida Steel Structure Corporation
    Inventors: Shunji Iwago, Masayoshi Uchida
  • Publication number: 20010007331
    Abstract: In the present invention, by the method using a backing material such as copper, which is not melted by a welding heat source, in an end face of a member without using a backing metal or consumable backing material at a joint welding time, overlay welding is performed to increase a plate thickness and a plate width. Thereafter, edge preparation including a member of a designed joint weld location and an overlay weld is performed, and the groove processed portion is placed to an opponent member to provide joint welding in order to obtain an effective throat depth more than a plate thickness and a plate width of the member.
    Type: Application
    Filed: January 8, 2001
    Publication date: July 12, 2001
    Applicant: MACHIDA STEEL STRUCTURE CORPORATION
    Inventors: Shunji Iwago, Masayoshi Uchida