Patents by Inventor Masazumi Nagareda

Masazumi Nagareda 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).

  • Process and apparatus for exhausting fumes produced by arc welding
    Patent number: 4287405
    Abstract: During arc welding, optical radiation emitted from an arc is detected by means of a photoelectric device, and an electric detection signal from the photoelectric device is used for controlling the travel of a suction hood along a weld line so that the weld fumes may be exhausted through the suction hood and to insure that the weld metal zone is always covered by the suction hood.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: September 1, 1981
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Takashi Ohmae, Yasuhiro Fukaya, Yasuyuki Yoshida, Tamotu Oka, Masahiko Sato, Masazumi Nagareda