Patents by Inventor Hajime Nakashima

Hajime Nakashima 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: 6531770
    Abstract: An electronic part unit comprises an electronic part body which has a semiconductor chip and a plurality of external connection electrodes electrically connected to the semiconductor chip and in which the semiconductor chip is encapsulated such that the external connection electrodes remain exposed in a bottom surface of the electronic part body serving as a mounting surface opposed to the printed circuit board, and a cover member covering the electronic part body except for the mounting surface. The cover member has a shape defining a space which receives an adhesive around a side surface of the electronic part body to bond the electronic part body and the cover member to the printed circuit board.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: March 11, 2003
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Hajime Nakashima
  • Publication number: 20020063326
    Abstract: An electronic part unit comprises an electronic part body which has a semiconductor chip and a plurality of external connection electrodes electrically connected to the semiconductor chip and in which the semiconductor chip is encapsulated such that the external connection electrodes remain exposed in a bottom surface of the electronic part body serving as a mounting surface opposed to the printed circuit board, and a cover member covering the electronic part body except for the mounting surface. The cover member has a shape defining a space which receives an adhesive around a side surface of the electronic part body to bond the electronic part body and the cover member to the printed circuit board.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 30, 2002
    Inventor: Hajime Nakashima
  • Patent number: 4636932
    Abstract: A dv/dt protection circuit device for an AC-DC converter apparatus including control board switching arrangement having a current cut-off function which conducts an interrupts current from a power source to a load and refluxes the load current while the current is uninterrupted by a full-wave bridge rectifier circuit having a plurality of arms. Each arm of the bridge rectifier circuit connects a reactor for suppressing a rate of change of a power source line voltage of the bridge rectifier circuit at the switching time of the switching arrangement and a condenser is provided for absorbing an overvoltage generated at an inductance on the side of the power source, the condenser being connected on the side of the power source connected to the bridge rectifier circuit.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: January 13, 1987
    Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.
    Inventors: Toshiaki Kurosawa, Seiya Shima, Takeki Ando, Hiromi Inaba, Hajime Nakashima, Toshisuke Mine
  • Patent number: 4629034
    Abstract: In an elevator wherein an elevator cage is repeatedly run among a plurality of floors by controlling a cage driving motor in accordance with a velocity command; a floor arrival error involved when the elevator cage has arrived at the floor is detected, and the velocity command for the subsequent operation is corrected in accordance with the floor arrival error, thereby to enhance the floor arrival precision.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: December 16, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Hiromi Inaba, Hajime Nakashima, Hisakatsu Kiwaki, Akiteru Ueda, Takeki Ando, Toshiaki Kurosawa, Yoshio Sakai