Patents by Inventor Munetosi Nagasaka

Munetosi Nagasaka 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: 5521522
    Abstract: There is provided a probe apparatus with a stage for holding a wafer on which a plurality of chips are regularly arranged such that the chips are arranged substantially in an XY plane, a large number of contactors facing the wafer held on the stage, provided to corresponding to respective pads of the chips such as to be brought into contact collectively with the pads of all the device circuits on the wafer, tester for transmitting/receiving a test signal to/from the device via the contactors, elevator device for elevating the stage in a Z-axis direction, alignment device for moving the stage in an X-axis and/or Y-axis direction, and controller for controlling the alignment device and the elevator device.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: May 28, 1996
    Assignees: Tokyo Electron Limited, Tokyo Electron Yamanashi Limited
    Inventors: Yuichi Abe, Masao Yamaguchi, Munetosi Nagasaka