Patents by Inventor Setuo Matubara

Setuo Matubara 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).

  • Laser welding method
    Patent number: 5831239
    Abstract: A laser welding method which provides improved welding quality, allowing excellent products to be produced. The mixture of inactive gas or nitrogen gas and 5% to 35% of oxygen gas in terms of volume ratio and that of inactive gas or nitrogen gas and not less than 25% of dried air in terms of volume ratio are employed as an assist gas in the lap and butt weldings and filler wire-inserted welding of metal materials filmed with low melting point substance.
    Type: Grant
    Filed: June 24, 1996
    Date of Patent: November 3, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Setuo Matubara, Masaru Kanaoka
  • Method and apparatus for laser welding with an assist gas including dried air and the assist gas composition
    Patent number: 5618452
    Abstract: A laser welding method which provides improved welding quality, allowing excellent products to be produced. The mixture of inactive gas or nitrogen gas and 5% to 35% of oxygen gas in terms of volume ratio and that of inactive gas or nitrogen gas and not less than 25% of dried air in terms of volume ratio are employed as an assist gas in the lap and butt weldings and filler wire-inserted welding of metal materials filmed with low melting point substance.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 8, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Setuo Matubara, Masaru Kanaoka