TREA

Yasumi Umetsu

Follow

Person

  • Yamagata, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker system for mobile object
    • Patent number 10,486,614
    • Issue date Nov 26, 2019
    • Pioneer Corporation
    • Takayuki Negishi
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Speaker device
    • Patent number 9,241,220
    • Issue date Jan 19, 2016
    • Pioneer Corporation
    • Yasumi Umetsu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    SPEAKER SYSTEM FOR MOBILE OBJECT
    • Publication number 20180251079
    • Publication date Sep 6, 2018
    • Pioneer Corporation
    • Takayuki NEGISHI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SPEAKER SYSTEM FOR MOBILE OBJECT
    • Publication number 20180244212
    • Publication date Aug 30, 2018
    • Pioneer Corporation
    • Takayuki NEGISHI
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20110116650
    • Publication date May 19, 2011
    • Pioneer Corporation
    • Yasumi Umetsu
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE