Patents by Inventor Tatsuo Ishijima

Tatsuo Ishijima 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).

  • Plasma cutting machine and cutting method
    Patent number: 9516737
    Abstract: A plasma torch is provided with an electrode for generating a plasma arc, a nozzle having an opening through which the plasma arc passes, and a cover member. The cover member is arranged to cover the nozzle in the jetting direction of the plasma arc from the nozzle. The cover member has an opening through which the plasma arc passes. The cover member is made from a magnetic material.
    Type: Grant
    Filed: December 25, 2013
    Date of Patent: December 6, 2016
    Assignee: KOMATSU INDUSTRIES CORPORATION
    Inventors: Yoshihiro Yamaguchi, Yoshihiko Uesugi, Yasunori Tanaka, Tatsuo Ishijima
  • PLASMA CUTTING MACHINE AND CUTTING METHOD
    Publication number: 20150296605
    Abstract: A plasma torch is provided with an electrode for generating a plasma arc, a nozzle having an opening through which the plasma arc passes, and a cover member. The cover member is arranged to cover the nozzle in the jetting direction of the plasma arc from the nozzle. The cover member has an opening through which the plasma arc passes. The cover member is made from a magnetic material.
    Type: Application
    Filed: December 25, 2013
    Publication date: October 15, 2015
    Applicant: KOMATSU INDUSTRIES CORPORATION
    Inventors: Yoshihiro Yamaguchi, Yoshihiko Uesugi, Yasunori Tanaka, Tatsuo Ishijima