TREA

Takeshi Hara

Follow

Person

  • Kanagawa, JP
People

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    HEADPHONE DRIVER, LOUDSPEAKER, AND METHOD OF MANUFACTURING HEADPHON...
    • Publication number 20140363013
    • Publication date Dec 11, 2014
    • SONY CORPORATION
    • Koji Nageno
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    EAR SPEAKER DEVICE
    • Publication number 20120177206
    • Publication date Jul 12, 2012
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    EARPHONE AND ACOUSTIC TRANSDUCER
    • Publication number 20120087533
    • Publication date Apr 12, 2012
    • SONY CORPORATION
    • Koji Nageno
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ACOUSTIC CONVERSION DEVICE AND ACOUSTIC CONVERSION DEVICE ASSEMBLY...
    • Publication number 20110311088
    • Publication date Dec 22, 2011
    • SONY CORPORATION
    • Tsutomu Nagumo
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ACOUSTIC CONVERSION DEVICE
    • Publication number 20110311091
    • Publication date Dec 22, 2011
    • SONY CORPORATION
    • Tsutomu Nagumo
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ACOUSTIC CONVERSION DEVICE
    • Publication number 20110311090
    • Publication date Dec 22, 2011
    • SONY CORPORATION
    • Tsutomu Nagumo
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ACOUSTIC CONVERSION DEVICE AND ACOUSTIC CONVERSION DEVICE ASSEMBLY...
    • Publication number 20110311089
    • Publication date Dec 22, 2011
    • SONY CORPORATION
    • Tsutomu Nagumo
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Ear speaker device
    • Publication number 20080253604
    • Publication date Oct 16, 2008
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Loudspeaker device
    • Publication number 20070297640
    • Publication date Dec 27, 2007
    • Sony Corporation
    • Yoshio Ohashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker device
    • Publication number 20060088184
    • Publication date Apr 27, 2006
    • Yoshio Ohashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE