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Isao Sugawara

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  • Saitama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    AC voltage regulator
    • Patent number 6,236,192
    • Issue date May 22, 2001
    • I-Hits Laboratory
    • Yasunobu Suzuki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    AC-AC/DC converter
    • Patent number 6,067,243
    • Issue date May 23, 2000
    • I-Hits Laboratory Corporation
    • Yasunobu Suzuki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Uninterruptible power supply method
    • Patent number 5,856,712
    • Issue date Jan 5, 1999
    • I-Hits Laboratory
    • Yasunobu Suzuki
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Input waveform follow-up AC power source system
    • Patent number 5,635,826
    • Issue date Jun 3, 1997
    • Chiyoda Corporation
    • Isao Sugawara
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Electric power source device
    • Patent number 4,390,939
    • Issue date Jun 28, 1983
    • Kabushiki Kaisha Chiyoda
    • Isao Sugawara
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER