TREA

KAZUO MARUYAMA

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  • Nagaizumi-cho, Sunto-gun, Shizuoka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lighting device
    • Patent number 11,665,805
    • Issue date May 30, 2023
    • Koito Electric Industries, Ltd.
    • Tadashi Fujii
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Power supply adjustment system and lighting apparatus
    • Patent number 10,932,338
    • Issue date Feb 23, 2021
    • Koito Electric Industries, Ltd.
    • Takayuki Izumi
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power supply system and railroad car
    • Patent number 10,668,811
    • Issue date Jun 2, 2020
    • KOITO ELECTRIC INDUSTRIES, LTD.
    • Akitaka Samejima
    • B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    LIGHTING DEVICE
    • Publication number 20200398744
    • Publication date Dec 24, 2020
    • KOITO ELECTRIC INDUSTRIES, LTD.
    • Tadashi FUJII
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    POWER SUPPLY ADJUSTMENT SYSTEM AND LIGHTING APPARATUS
    • Publication number 20200178364
    • Publication date Jun 4, 2020
    • KOITO ELECTRIC INDUSTRIES, LTD.
    • Takayuki IZUMI
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    POWER SUPPLY SYSTEM AND RAILROAD CAR
    • Publication number 20190031029
    • Publication date Jan 31, 2019
    • KOITO ELECTRIC INDUSTRIES, LTD.
    • AKITAKA SAMEJIMA
    • B60 - VEHICLES IN GENERAL