Patents by Inventor Mitsuho Tanaka

Mitsuho Tanaka 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: 5507651
    Abstract: A film circuit connector in which respective conductive tracks in film contact areas on front, mating faces are pressed together into electrical connection between side walls of a metal channel-section receptacle spring and a compressible elastomeric plug spring which engage respective rear faces of the films, the compressible plug spring providing a counter-force to the receptacle spring force, accommodating any variations in receptacle spring force arising longitudinally thereof, ensuring constant contact force between all tracks. Tabs for anchoring and grounding the receptacle spring to the circuit board are struck out and bent down from opposite walls of the receptacle spring, enabling electrical shielding of contact areas. Linking portions of conductive tracks connecting the mating contact portions on the front face of the film to board connecting portions, are formed on the rear face of the film for electrical and mechanical protection and may be insulated on all sides.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: April 16, 1996
    Assignee: Kel Corporation
    Inventors: Mitsuho Tanaka, Akira Katsumata, Hiroshi Arisaka
  • Patent number: 5316486
    Abstract: A film circuit connector in which respective conductive tracks in film contact areas on front, mating faces are pressed together into electrical connection between side walls of a metal channel-section receptacle spring and a compressible elastomeric plug spring which engage respective rear faces of the films, the compressible plug spring providing a counter-force to the receptacle spring force, accommodating any variations in receptacle spring force arising longitudinally thereof, ensuring constant contact force between all tracks. Tabs for anchoring and grounding the receptacle spring to the circuit board are struck out and bent down from opposite walls of the receptacle spring, enabling electrical shielding of contact areas. Linking portions of conductive tracks connecting the mating contact portions on the front face of the film to board connecting portions, are formed on the rear face of the film for electrical and mechanical protection and may be insulated on all sides.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: May 31, 1994
    Assignee: KEL Corporation
    Inventors: Mitsuho Tanaka, Akira Katsumata, Hiroshi Arisaka
  • Patent number: 5249977
    Abstract: A disk-shape portion of a surface mount connector housing or a separate cap member provides an upwardly facing surface adherable by suction to a suction nozzle of a conventional, automatic, vacuum type pick-and- place assembly tool and are, respectively, either integrally joined to the connector at the mating face, by a frangible or severable portion, or releasably attached to the connector housing by resilient legs which grip the housing between them, enabling the connector to be carried into position on a circuit board by the tool.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: October 5, 1993
    Assignee: KEL Corporation
    Inventors: Mitsuho Tanaka, Masakazu Koiso, Koichi Asai, Mitsuo Morishita, Kazuhiko Yokomae
  • Patent number: 5151040
    Abstract: A connector for an LGA IC device or a PGA IC device comprises an array of terminals in a housing each with a receptacle portion receiving a contact member mounted on the upper end of an axially extending compression spring for tilting movement into engagement with the receptacle wall at two, axially spaced locations by engagement with a pin or land depressing the spring. The contact member may be retained within the receptacle providing a socket for a pin of a PGA IC device or formed as a pin protruding from the free end of the receptacle for engagement with a land of an LGA IC device, in both cases providing a force assisting disconnection of the device.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: September 29, 1992
    Assignee: Kel Corporation
    Inventor: Mitsuho Tanaka
  • Patent number: D490778
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: June 1, 2004
    Assignees: NTT Advanced Technology Corporation, Nippon Telegraph and Telephone Corporation
    Inventors: Shuichiro Inagaki, Teruhisa Tabuchi, Nobuyuki Tanaka, Yoshimitsu Arai, Yukio Komine, Nobuo Ishimine, Mitsuho Tanaka