Patents by Inventor Takumi Kumatabara

Takumi Kumatabara 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).

  • Contactor and test method using contactor
    Patent number: 7825676
    Abstract: A contact terminal formed of an electrically conductive material is arranged in each of a plurality of holed of a contactor substrate. An electrically conductive part is formed on an inner surface of each hole. The contact terminal has a first contact part that contacts a terminal of an electronic part and a second contact part that contacts the electrically conductive part in a middle portion. When the contact terminal bends by the first contact part being pressed, the second contact part contacts the electrically conductive part of the contactor substrate and an appropriate degree of contact pressure is obtained.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: November 2, 2010
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Daisuke Koizumi, Naohito Kohashi, Kazuhiro Tashiro, Takumi Kumatabara
  • Contactor for electronic components and test method using the same
    Patent number: 7518388
    Abstract: A contactor configured to be electrically connected to the terminals of an electronic component is disclosed. The connector includes multiple contact electrodes contacting the terminals of the electronic component and multiple elastic electrodes each composed of an electrically conductive elastic body. The elastic electrodes generate a pressing force for pressing the contact electrodes against the terminals of the electronic component. The contact electrodes are separable from the elastic electrodes.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: April 14, 2009
    Assignee: Fujitsu Microelectronics Limited
    Inventors: Kazuhiro Tashiro, Shigeyuki Maruyama, Daisuke Koizumi, Takumi Kumatabara, Keisuke Fukuda
  • Contactor for electronic components and test method using the same
    Publication number: 20080136433
    Abstract: A contactor configured to be electrically connected to the terminals of an electronic component is disclosed. The connector includes multiple contact electrodes contacting the terminals of the electronic component and multiple elastic electrodes each composed of an electrically conductive elastic body. The elastic electrodes generate a pressing force for pressing the contact electrodes against the terminals of the electronic component. The contact electrodes are separable from the elastic electrodes.
    Type: Application
    Filed: November 1, 2007
    Publication date: June 12, 2008
    Applicant: Fujitsu Limited
    Inventors: Kazuhiro Tashiro, Shigeyuki Maruyama, Daisuki Koizumi, Takumi Kumatabara, Keisuke Fukuda
  • Contactor for electronic components and test method using the same
    Patent number: 7309996
    Abstract: A contactor configured to be electrically connected to the terminals of an electronic component is disclosed. The connector includes multiple contact electrodes contacting the terminals of the electronic component and multiple elastic electrodes each composed of an electrically conductive elastic body. The elastic electrodes generate a pressing force for pressing the contact electrodes against the terminals of the electronic component. The contact electrodes are separable from the elastic electrodes.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: December 18, 2007
    Assignee: Fujitsu Limited
    Inventors: Kazuhiro Tashiro, Shigeyuki Maruyama, Daisuke Koizumi, Takumi Kumatabara, Keisuke Fukuda
  • Contactor and test method using contactor
    Publication number: 20070252608
    Abstract: A contact terminal formed of an electrically conductive material is arranged in each of a plurality of holed of a contactor substrate. An electrically conductive part is formed on an inner surface of each hole. The contact terminal has a first contact part that contacts a terminal of an electronic part and a second contact part that contacts the electrically conductive part in a middle portion. When the contact terminal bends by the first contact part being pressed, the second contact part contacts the electrically conductive part of the contactor substrate and an appropriate degree of contact pressure is obtained.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 1, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Daisuke Koizumi, Naohito Kohashi, Kazuhiro Tashiro, Takumi Kumatabara
  • Contactor for electronic components and test method using the same
    Publication number: 20040239357
    Abstract: A contactor configured to be electrically connected to the terminals of an electronic component is disclosed. The connector includes multiple contact electrodes contacting the terminals of the electronic component and multiple elastic electrodes each composed of an electrically conductive elastic body. The elastic electrodes generate a pressing force for pressing the contact electrodes against the terminals of the electronic component. The contact electrodes are separable from the elastic electrodes.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Kazuhiro Tashiro, Shigeyuki Maruyama, Daisuke Koizumi, Takumi Kumatabara, Keisuke Fukuda
  • Contactor having contact electrodes formed by laser processing
    Patent number: 6806723
    Abstract: Contact electrodes having a predetermined shape are formed by irradiating a laser beam onto the contact electrodes that are formed of a conductive material. The laser beam can be irradiated, after joining an end of each contact electrode opposite to a contact end to a contact board, so as to deform the contact electrode so that the contact end is located at a predetermined position. The laser beam may be irradiated while heating or cooling a portion of the contact electrode opposite to a portion onto which the laser beam is irradiated.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: October 19, 2004
    Assignee: Fujitsu Limited
    Inventors: Shigeyuki Maruyama, Keisuke Fukuda, Naoyuki Watanabe, Takumi Kumatabara, Naohisa Matsushita, Masayuki Imakado, Kyohei Tamaki, Hiroshi Nozawa
  • Contactor having contact electrodes formed by laser processing
    Publication number: 20040032272
    Abstract: Contact electrodes having a predetermined shape are formed by irradiating a laser beam onto the contact electrodes that are formed of a conductive material. The laser beam can be irradiated, after joining an end of each contact electrode opposite to a contact end to a contact board, so as to deform the contact electrode so that the contract end is located at a predetermined position. The laser beam may be irradiated while heating or cooling a portion of the contact electrode opposite to a portion onto which the laser beam is irradiated.
    Type: Application
    Filed: February 21, 2003
    Publication date: February 19, 2004
    Applicant: FUJITSU LIMITED
    Inventors: Shigeyuki Maruyama, Keisuke Fukuda, Naoyuki Watanabe, Takumi Kumatabara, Naohisa Matsushita, Masayuki Imakado, Kyohei Tamaki, Hiroshi Nozawa