TREA

Tsutomu Yokota

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  • Iruma-gun, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Light-emitting device
    • Patent number 6,774,405
    • Issue date Aug 10, 2004
    • Toyoda Gosei Co., Ltd.
    • Takemasa Yasukawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Light-emitting device
    • Patent number 6,680,490
    • Issue date Jan 20, 2004
    • Toyoda Gosei Co., Ltd.
    • Takemasa Yasukawa
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Light-emitting device
    • Publication number 20030006421
    • Publication date Jan 9, 2003
    • Takemasa Yasukawa
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Light-emitting device
    • Publication number 20020121645
    • Publication date Sep 5, 2002
    • Takemasa Yasukawa
    • H01 - BASIC ELECTRIC ELEMENTS