Patents by Inventor Junichi Akama

Junichi Akama 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).

  • Publication number: 20040029410
    Abstract: A connector includes multiple pairs of signal contacts arranged in a housing, and facilitates the wiring design and the wiring operation for substrates. The two signal contacts in each of the multiple pairs are arranged at a distance in the longitudinal direction of the housing. With this arrangement, excellent coupling can be established between the two signal contacts, and signals can be balanced-transmitted without causing a phase difference. Also, the lengths of each pair of wires of a wiring substrate to be connected to the multiple pairs of signal contacts can be easily made uniform. Accordingly, there is no need to prepare excessive wiring areas, and the substrate wiring design and the wiring operation can be simplified.
    Type: Application
    Filed: July 7, 2003
    Publication date: February 12, 2004
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Junichi Akama, Masahiro Hamazaki, Tadashi Kumamoto, Manabu Shimizu, Hideo Miyazawa, Fumio Kurotori, Moriyuki Ueno
  • Patent number: 6685511
    Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: February 3, 2004
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Junichi Akama, Hirofumi Yanagisawa
  • Patent number: 6638089
    Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: October 28, 2003
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
  • Patent number: 6619987
    Abstract: A balanced transmission connector, includes a relay board, a plug body for balanced transmission provided on an end part of the relay board, a cable for balanced transmission connected with another end part of the relay board, and a shield cover assembly covering the relay board, the plug body for balanced transmission, and a part of the cable and including a first half shield cover having slide wall parts, an edge of which has a step-shaped surface including a base flat surface and a raised flat surface extending in parallel and in a longitudinal direction of the edge.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: September 16, 2003
    Assignee: Fujitsu Component Limited
    Inventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Yoshinori Sata, Hideo Miyazawa
  • Publication number: 20030073351
    Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.
    Type: Application
    Filed: November 22, 2002
    Publication date: April 17, 2003
    Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITED
    Inventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
  • Publication number: 20030060083
    Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.
    Type: Application
    Filed: July 3, 2002
    Publication date: March 27, 2003
    Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITED
    Inventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
  • Patent number: 6533614
    Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: March 18, 2003
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
  • Publication number: 20030036310
    Abstract: A balanced transmission connector, includes a relay board, a plug body for balanced transmission provided on an end part of the relay board, a cable for balanced transmission connected with another end part of the relay board, and a shield cover assembly covering the relay board, the plug body for balanced transmission, and a part of the cable and including a first half shield cover having side wall parts, and edge of which has a step-shaped surface including a base flat surface and a raised flat surface extending in parallel and in a longitudinal direction of the edge, the base flat surface positioned on an interior side of the side walls, and a second half shield cover having side wall parts, an edge of which has a step-shaped surface including a base flat surface and a raised flat surface extending in parallel and in a longitudinal direction of the edge, the base flat surface of the side walls of the second half shield cover positioned on an exterior side of the side walls, wherein the raised flat surface
    Type: Application
    Filed: November 16, 2001
    Publication date: February 20, 2003
    Inventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Yoshinori Sata, Hideo Miyazawa
  • Patent number: 6508657
    Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: January 21, 2003
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
  • Publication number: 20020177334
    Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.
    Type: Application
    Filed: July 3, 2002
    Publication date: November 28, 2002
    Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITED
    Inventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
  • Patent number: 6482028
    Abstract: A cable connector includes a cable including a conductor, a contact connected to a tip part of the conductor, and a connector connected to the cable. The connector includes a terminal part including an insulator having a hole formed therein. The contact is pressed into the hole.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: November 19, 2002
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Hideo Miyazawa, Moriyuki Ueno
  • Patent number: 6439928
    Abstract: A connector assembly including a jack connector and a plug connector. Each of the jack and plug connectors includes plural pairs of signal contact elements, the pairs being arranged parallel with each other in an array, and the signal contact elements of each of the pairs being arranged opposite to each other; plural ground contact elements, each of which is used as a shield to reduce crosstalk between two parallel the pairs of signal contact elements arranged side by side, the plural pairs of signal contact elements and the plural ground contact elements being alternately arranged in a row; and an electro-insulating body for supporting the signal contact elements and the ground contact elements in a mutually insulated arrangement. It is advantageous that each pair of signal contact elements is used for a balanced transmission line.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: August 27, 2002
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Junichi Akama, Hideo Miyazawa, Masahiro Hamazaki
  • Publication number: 20020081874
    Abstract: A cable connector includes a cable including a conductor, a contact connected to a tip part of the conductor, and a connector connected to the cable. The connector includes a terminal part including an insulator having a hole formed therein. The contact is pressed into the hole.
    Type: Application
    Filed: July 27, 2001
    Publication date: June 27, 2002
    Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITED
    Inventors: Tadashi Kumamoto, Manabu Shimizu, Junichi Akama, Hideo Miyazawa, Moriyuki Ueno
  • Patent number: 6371812
    Abstract: A plug connector includes an electrically insulating body including a housing and a pair of arms; a plurality of pairs of first and second right-angled signal contact elements supported by the housing such that the first right-angled signal contact element is arranged above the second right-angled signal contact element, each of the right-angled signal contact elements having a substantially right-angled contact portion protruding backward from the housing and a leading portion inserted into the housing, the contact portion having a horizontal part and a vertical part; a plurality of ground contact elements supported by the housing and disposed alternately with the plurality of pairs of first and second right-angled plug signal contacts, each of the ground contact elements provided with two ground terminals; and upper and lower electrically insulating brackets assembled to the housing.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: April 16, 2002
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Osamu Daikuhara, Junichi Akama
  • Patent number: 6368121
    Abstract: A connector assembly for balanced transmission includes a plug connector wherein a plurality of plug-type contact element arrays extend parallel to each other and a plug-type ground plate is disposed between neighboring plug-type contact element arrays, and a jack connector wherein a plurality of jack-type contact element arrays extend parallel to each other and a jack-type ground contact elements for the plug-type ground plate are disposed between neighboring jack-type contact element arrays.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: April 9, 2002
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Moriyuki Ueno, Hirofumi Yanagisawa, Yasuyuki Miki, Akira Okada, Satoshi Katoh, Junichi Akama
  • Patent number: 6361367
    Abstract: A plug connector includes an electrically insulating body including a housing and a pair of arms; a plurality of pairs of first and second right-angled signal contact elements supported by the housing such that the first right-angled signal contact element is arranged above the second right-angled signal contact element, each of the right-angled signal contact elements having a substantially right-angled contact portion protruding backward from the housing and a leading portion inserted into the housing, the contact portion having a horizontal part and a vertical part; a plurality of ground contact elements supported by the housing and disposed alternately with the plurality of pairs of first and second right-angled plug signal contacts, each of the ground contact elements provided with two ground terminals; and upper and lower electrically insulating brackets assembled to the housing.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: March 26, 2002
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Osamu Daikuhara, Junichi Akama
  • Publication number: 20020031932
    Abstract: A connector is electrically connected to a substrate in which a conductor pattern and electrodes at ends of the conductor pattern are provided on a surface of the substrate. The connector includes a plurality of contacts that are resiliently connectable to the electrodes of the substrate inserted in the connector. An insulator member contains the contacts arrayed therein. A slider unit is movably attached to the insulator member, the slider unit including a plurality of lugs that are connectable to respective edges of the contacts contained in the insulator member.
    Type: Application
    Filed: July 6, 2001
    Publication date: March 14, 2002
    Applicant: FUJITSU TAKAMISAWA COMPONENT LIMITED
    Inventors: Yutaka Fukumoto, Manabu Shimizu, Takahiro Kondou, Hideo Miyazawa, Junichi Akama, Moriyuki Ueno
  • Publication number: 20020009906
    Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.
    Type: Application
    Filed: September 26, 2001
    Publication date: January 24, 2002
    Applicant: Fujitsu Takamisawa Component Limited
    Inventors: Junichi Akama, Hirofumi Yanagisawa
  • Patent number: 6336827
    Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: January 8, 2002
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Junichi Akama, Hirofumi Yanagisawa
  • Publication number: 20020002004
    Abstract: A balanced-transmission cable-and-connector unit includes a junction substrate, a plug for balanced transmission connected to one end of the junction substrate, a cable for balanced transmission connected to the other end of the junction substrate, and a shielding cover covering the junction substrate, a portion of the plug at which the plug is connected to the junction substrate and a portion of the cable at which the cable is connected to the junction substrate. The plug includes a pair of first and second signal contacts, and the length of a first signal transmitting path from the first signal contact to the cable via the junction substrate is substantially equal to the length of a second signal transmitting path from the second signal contact to the cable via the junction substrate.
    Type: Application
    Filed: November 9, 1998
    Publication date: January 3, 2002
    Inventors: JUNICHI AKAMA, HIROFUMI YANAGISAWA