Patents by Inventor Rihei Takashima

Rihei Takashima 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).

  • Printed circuit having twisted conductor lines printed thereon
    Patent number: 5039824
    Abstract: A printed conductor including two twisted conductor lines each have a plurality of segments disposed alternately on opposite surfaces of a circuit board, the successive segments of each line being connected by electrically conductive elements passing through through-holes in the circuit board. The use of such printed conductor improves the transmission characteristics of the printed circuit in the high-frequency range.
    Type: Grant
    Filed: May 18, 1990
    Date of Patent: August 13, 1991
    Assignee: Graphico Co., Ltd.
    Inventors: Tokuhei Takashima, Rihei Takashima