Patents by Inventor Ryuichi Oshima

Ryuichi Oshima 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).

  • Piezoelectric cable and wire harness using the same
    Patent number: 5907213
    Abstract: The present invention provides a low-cost piezoelectric cable and wire harness using the same, which offer a high connection reliability without picking up interference signals in areas where the cable acts as a sensor. Coaxial piezoelectric cable 10 has a piezoelectric material layer 14 disposed between a core conductor 12 and an outer conductor 16. Piezoelectric material layer 14 is polarized and shows piezoelectric properties in a region 20 which extends along a window frame 2 of an automobile, but is not polarized, and therefore shows no piezoelectric properties, in a region 22 in which it is not desired that the cable act as a sensor. Accordingly, there is no pick-up of false signals in the region 22.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: May 25, 1999
    Assignee: Measurement Specialties, Inc.
    Inventors: Ryuichi Oshima, Takaki Naito, Kyung Tae Park