Patents by Inventor Kunio Shamoto

Kunio Shamoto 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).

  • Arc welding process
    Patent number: 4421971
    Abstract: An arc welding process for welding a circumferential surface of a fixed pipe etc. by shielding a work part with a shield gas is provided. It is welded by a flat arc formed in a flat sectional view by simultaneously ejecting a gas from nozzles (19) to the arc formed between a welding torch (10) and a product for welding by placing a pair of the gas nozzle (19) for ejecting the gas at the end of the welding torch (10).
    Type: Grant
    Filed: September 16, 1980
    Date of Patent: December 20, 1983
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Jun Ukai, Toyozo Tetsu, Kunio Shamoto