TREA

Shigeru Okamoto

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  • Hirakata, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Operating mode switching unit for bicycle
    • Patent number 6,031,190
    • Issue date Feb 29, 2000
    • Shimano Inc.
    • Toshihide Tokuda
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Consumable electrode DC arc welder
    • Patent number 5,942,139
    • Issue date Aug 24, 1999
    • Sansha Electric Manufacturing Company Limited
    • Haruo Moriguchi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Waterproofed power supply apparatus
    • Patent number 5,943,220
    • Issue date Aug 24, 1999
    • Sansha Electric Manufacturing Company, Limited
    • Kunio Shikata
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power supply apparatus with initial arcing sustaining circuit
    • Patent number 5,877,952
    • Issue date Mar 2, 1999
    • Sansha Electric Manufacturing Co., Limited
    • Haruo Moriguchi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power supply apparatus
    • Patent number 5,831,240
    • Issue date Nov 3, 1998
    • Sansha Electric Manufacturing Company, Limited
    • Masao Katooka
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    AC-DC converter apparatus
    • Patent number 5,771,163
    • Issue date Jun 23, 1998
    • Sansha Electric Manufacturing Company, Limited
    • Haruo Moriguchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Arc welder
    • Patent number 5,760,372
    • Issue date Jun 2, 1998
    • Sansha Electric Manufacturing Company, Limited
    • Kunio Karino
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Power supply apparatus
    • Patent number 5,757,638
    • Issue date May 26, 1998
    • Sansha Electric Manufacturing Company, Limited
    • Masao Katooka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power supply apparatus for arc-utilizing equipment
    • Patent number 5,751,568
    • Issue date May 12, 1998
    • Sansha Electric Manufacturing Company, Limited
    • Kenzo Danjo
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Portable power supply unit with AC-DC converter
    • Patent number D386148
    • Issue date Nov 11, 1997
    • Sansaha Electric Manufacturing Co., Ltd.
    • Masao Katooka
    • D13 - Equipment for production, distribution, or transformation of energy
  • Information Patent Grant

    Portable power supply unit with AC-DC converter
    • Patent number D377335
    • Issue date Jan 14, 1997
    • Sansha Electric Manufacturing Company, Limited
    • Masao Katooka
    • D13 - Equipment for production, distribution, or transformation of energy