Patents by Inventor Hajime Imano

Hajime Imano 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 wiring device with base layer having a grid pattern
    Patent number: 6184478
    Abstract: A printed wiring device includes an insulation layer, a base layer, i.e. grounding layer or power supply layer, disposed on the insulation layer, and a signal line disposed on the insulation layer at the opposite side of the base layer. A plurality of holes is formed in the base layer opposite to the signal line, so that an average capacitance value between the signal line and the base layer is decreased. Thus, even if the insulation layer is thinned without narrowing the width of the signal line, characteristic impedance of the signal line can be controlled at a desired value.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: February 6, 2001
    Assignee: Adtec Corporation
    Inventors: Hajime Imano, Yoshikazu Kato