Patents by Inventor Ken'ichi Nobuta

Ken'ichi Nobuta 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).

  • Testing apparatus for dielectric breakdown caused by tracking phenomena
    Patent number: 4339708
    Abstract: A pair of opposed electrodes is disposed on each of a plurality of electrically insulating specimens, and specified voltage is applied to each pair of electrodes. In this state, the specimens are brought to a position below a single dripping nozzle intermittently one after another to apply a drop of test solution to each specimen between the electrodes. The apparatus repeats this step cyclically.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: July 13, 1982
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mitsuru Saito, Yuji Karatani, Wataru Sakurai, Ken'ichi Nobuta