Patents by Inventor Kazuharu Fujii

Kazuharu Fujii 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).

  • Welding torch having improved gas jetting capability
    Patent number: 5084605
    Abstract: There is disclosed a welding torch provided with orifice plate. The orifice plate is screwed to an outer circumference of a gas diffuser and has a plurality of apertures staggered in the peripheral surface thereof in the axial direction thereof.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: January 28, 1992
    Assignee: Obara Corporation
    Inventors: Katuji Tanabe, Kazuharu Fujii