Patents by Inventor Katsuo Ishihara

Katsuo Ishihara 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).

  • Electromagnetically anechoic chamber and shield structures therefor
    Patent number: 5134405
    Abstract: The present invention relates to an electromagnetically anechoic chamber for EMC (Electromagnetic Compatibility) tests of electronic devices. The floor, ceiling and side wall of the anechoic chamber have panels of electromagnetic wave absorber having many ferrite tiles, and shield members comprising double layered shield members of copper sheets and iron sheets for absorbing and reflecting the foreign electromagnetic wave.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: July 28, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuo Ishihara, Yoshio Tomiyama