TREA

Tsutomu Yokoyama

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Planar speaker
    • Patent number 7,283,636
    • Issue date Oct 16, 2007
    • The Furukawa Electric Co., Ltd.
    • Takeshi Nishimura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Planar speaker
    • Publication number 20050152577
    • Publication date Jul 14, 2005
    • THE FURUKAWA ELECTRIC CO., LTD.
    • Takeshi Nishimura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE