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Tokushi Yamauchi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Socket for electronic component
    • Patent number 7,553,162
    • Issue date Jun 30, 2009
    • Panasonic Electric Works Co., Ltd.
    • Masaaki Isoda
    • F21 - LIGHTING
  • Information Patent Grant

    Electronic ballast for a high-pressure discharge lamp
    • Patent number 6,914,395
    • Issue date Jul 5, 2005
    • Matsushita Electric Works, Ltd.
    • Tokushi Yamauchi
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Discharge lamp lighting device
    • Patent number 6,118,224
    • Issue date Sep 12, 2000
    • Matsushita Electric Works, Ltd.
    • Yoshinobu Murakami
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power supply device
    • Patent number 5,995,398
    • Issue date Nov 30, 1999
    • Matsushita Electric Works, Ltd.
    • Tokushi Yamauchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Discharge lamp driving circuit having resonant circuit defining two...
    • Patent number 5,914,572
    • Issue date Jun 22, 1999
    • Matsushita Electric Works, Ltd.
    • Jinrong Qian
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power source device
    • Patent number 5,644,480
    • Issue date Jul 1, 1997
    • Matsushita Electric Works, Ltd.
    • Hiroyuki Sako
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply having a chopper with an improved power factor
    • Patent number 5,517,399
    • Issue date May 14, 1996
    • Matsushita Electric Works, Ltd.
    • Tokushi Yamauchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Discharge lamp lighting device
    • Patent number 5,502,423
    • Issue date Mar 26, 1996
    • Matsushita Electric Works, Ltd.
    • Akio Okude
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents