Patents by Inventor Teruaki Tsukamoto

Teruaki Tsukamoto 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).

  • Patent number: 6154040
    Abstract: In an apparatus for testing an electronic device, a life of a measurement board is significantly extended by interposing a plate member between the measurement board and a device mounting member for accommodating the electronic device. The plate member has a plurality of rear pads to be brought into contact with each of the pads of the measurement board on a back surface thereof and a plurality of front pads electrically connected to each of the rear pads through via holes on a front surface thereof. The plate member is places between the measurement board and the device mounting member on testing the electronic device and can be readily replaced by a new one when it is worn away.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: November 28, 2000
    Assignees: NEC Corporation, Agilent Technologies
    Inventors: Teruaki Tsukamoto, Minoru Doi
  • Patent number: 5930269
    Abstract: A testing system selectively activates products of a semiconductor integrated circuit device mounted on a burn-in board, supplies test data signals to the products to see whether or not a defective product is mixed into the products, and a power distributor incorporated in the testing system supplies electric power only to the activated products so that non-activated products do not affect the test data signals.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: July 27, 1999
    Assignee: NEC Corporation
    Inventors: Teruaki Tsukamoto, Atsushi Nigorikawa