Patents by Inventor Akeo Katahira

Akeo Katahira 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: 7119438
    Abstract: A method of arranging microspheres with liquid, a microsphere arranging device, and a semiconductor device are provided. The method comprising the steps of placing the semiconductor device with a large number of pads with holes, on a loading table with a variable tilt angle, and pouring microspheres together with conductive liquid held in a holding container onto the semiconductor device. The microspheres are storably placed in the holes on the pads of the semiconductor device. The non-stored microspheres and conductive liquid are accumulated in a receiving tank, and the conductive liquid including the accumulated microspheres are transferred to the holding container by a pump.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: October 10, 2006
    Assignees: NEC Corporation, Japan E M Co., Ltd.
    Inventors: Ichiro Hazeyama, Masahiro Kubo, Sakae Kitajo, Kazuhiko Futakami, Shinichi Ishiduka, Susumu Nanko, Hitoshi Anma, Tosiji Yamada, Akeo Katahira
  • Patent number: 6926188
    Abstract: Conductive balls are transferred from a pallet onto an array of conductive pads on a semiconductor chip by means of a transfer apparatus; the transfer apparatus includes a pallet formed with an array of recesses same in pattern as the array of conductive pads, a movable head formed with an array of vacuum holes and a driving mechanism for moving the head from an idle position onto the pallet and from the pallet to the semiconductor chip; when the head is moved to the pallet, the vacuum holes are connected to the recesses so as to confine the conductive balls in the narrow spaces; the vacuum is developed; then the conductive balls are traveled through the closed spaces to the vacuum holes; even if the conductive balls have been charged, the conductive balls are never attracted to the adjacent balls, and are surely captured by the vacuum holes.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: August 9, 2005
    Assignees: NEC Corporation, Japan E.M. Co., Ltd.
    Inventors: Ichiro Hazeyama, Sakae Kitajo, Yuzo Shimada, Akeo Katahira, Jun Ishida, Masaru Terashima, Kazuhiko Futakami
  • Patent number: 6889886
    Abstract: Conductive balls are transferred from a pallet onto an array of conductive pads on a semiconductor chip by means of a transfer apparatus; the transfer apparatus includes a pallet formed with an array of recesses same in pattern as the array of conductive pads, a movable head formed with an array of vacuum holes and a driving mechanism for moving the head from an idle position onto the pallet and from the pallet to the semiconductor chip; when the head is moved to the pallet, the vacuum holes are connected to the recesses so as to confine the conductive balls in the narrow spaces; the vacuum is developed; then the conductive balls are traveled through the closed spaces to the vacuum holes; even if the conductive balls have been charged, the conductive balls are never attracted to the adjacent balls, and are surely captured by the vacuum holes.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: May 10, 2005
    Assignees: NEC Corporation, Japan E.M. Co., LTD.
    Inventors: Ichiro Hazeyama, Sakae Kitajo, Yuzo Shimada, Akeo Katahira, Jun Ishida, Masaru Terashima, Kazuhiko Futakami
  • Publication number: 20050040528
    Abstract: A method of arranging micro spheres with liquid, a micro sphere arranging device and a semiconductor device, the method comprising the steps of placing the semiconductor device (2) with holes placed, through a large number of pads, on a loading table (3) with variable tilt angle, flowing macro spheres together with conductive liquid held in a holding container (6) down to the semiconductor device (2) to storably place the micro spheres on the pad storably in the holes of the semiconductor device (2), receiving and accumulating the non-stored micro spheres and conductive liquid by a receiving tank (1), and carrying the conductive liquid including the accumulated micro spheres to the holding container (6) by a pump (11)
    Type: Application
    Filed: January 10, 2003
    Publication date: February 24, 2005
    Inventors: Ichiro Hazeyama, Masahiro Kubo, Sakae Kitajo, Kazuhiko Futakami, Shinichi Ishiduka, Susumu Nanko, Hitoshi Anma, Tosiji Yamada, Akeo Katahira
  • Publication number: 20040094601
    Abstract: Conductive balls are transferred from a pallet onto an array of conductive pads on a semiconductor chip by means of a transfer apparatus; the transfer apparatus includes a pallet formed with an array of recesses same in pattern as the array of conductive pads, a movable head formed with an array of vacuum holes and a driving mechanism for moving the head from an idle position onto the pallet and from the pallet to the semiconductor chip; when the head is moved to the pallet, the vacuum holes are connected to the recesses so as to confine the conductive balls in the narrow spaces; the vacuum is developed; then the conductive balls are traveled through the closed spaces to the vacuum holes; even if the conductive balls have been charged, the conductive balls are never attracted to the adjacent balls, and are surely captured by the vacuum holes.
    Type: Application
    Filed: November 4, 2003
    Publication date: May 20, 2004
    Inventors: Ichiro Hazeyama, Sakae Kitajo, Yuzo Shimada, Akeo Katahira, Jun Ishida, Masaru Terashima, Kazuhiko Futakami
  • Publication number: 20020135064
    Abstract: Conductive balls are transferred from a pallet onto an array of conductive pads on a semiconductor chip by means of a transfer apparatus; the transfer apparatus includes a pallet formed with an array of recesses same in pattern as the array of conductive pads, a movable head formed with an array of vacuum holes and a driving mechanism for moving the head from an idle position onto the pallet and from the pallet to the semiconductor chip; when the head is moved to the pallet, the vacuum holes are connected to the recesses so as to confine the conductive balls in the narrow spaces; the vacuum is developed; then the conductive balls are traveled through the closed spaces to the vacuum holes; even if the conductive balls have been charged, the conductive balls are never attracted to the adjacent balls, and are surely captured by the vacuum holes.
    Type: Application
    Filed: March 25, 2002
    Publication date: September 26, 2002
    Applicant: NEC Corporation
    Inventors: Ichiro Hazeyama, Sakae Kitajo, Yuzo Shimada, Akeo Katahira, Jun Ishida, Masaru Terashima, Kazuhiko Futakami