Patents by Inventor Kouji Oikawa

Kouji Oikawa 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).

  • Radio network controller and method for handover of mobile terminal
    Patent number: 7664502
    Abstract: In a radio network controller (100), a buffer (161) for buffering data received from a mobile terminal (MT) via different base stations (BS1 and BSX) is expanded in accordance with the magnitude of the difference between the data transmission time from the base station (BS1) to the radio network controller (100) and the data transmission time from the base station (BSX) to the radio network controller (100).
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: February 16, 2010
    Assignee: Fujitsu Limited
    Inventor: Kouji Oikawa
  • Radio network controller and method for handover of mobile terminal
    Publication number: 20080008146
    Abstract: In a radio network controller (100), a buffer (161) for buffering data received from a mobile terminal (MT) via different base stations (BS1 and BSX) is expanded in accordance with the magnitude of the difference between the data transmission time from the base station (BS1) to the radio network controller (100) and the data transmission time from the base station (BSX) to the radio network controller (100).
    Type: Application
    Filed: November 1, 2006
    Publication date: January 10, 2008
    Inventor: Kouji Oikawa
  • Insulating coating composition, solderable insulated wires, production process of the insulated wires and flyback transformers using the insulated wires
    Patent number: 5254659
    Abstract: This invention relates to insulated wires having good heat resistance and solderability. In particular, wires coated with a polyimide resin or an imide-modified polyurethane resin are provided. They can each be produced by coating a conductor with an insulating coating composition which contains a polyamic acid represented by the following formula: ##STR1## wherein R.sup.1 means a particular tetravalent organic group, R.sup.2 denotes a specific divalent organic group, X is an alkylene or alkylenephenylene group, and n stands for a positive integer.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: October 19, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuo Tajima, Ryoichi Sudo, Makoto Kobata, Fusaji Shoji, Masayoshi Kitadani, Kouji Oikawa