Patents by Inventor Masamitsu Tochino

Masamitsu Tochino 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 power source
    Patent number: 5611950
    Abstract: An arc welding power source comprises a pair of rectifiers connected in parallel with each of double star connection three phase rectifying circuits and a capacitor connected in parallel with the entire rectifying circuit without a DC reactor. As a result, the arc welding power source can supply stable welding current having a smooth waveform and enough short circuit current.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: March 18, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masamitsu Tochino, Norikazu Osaki