TREA

Kenji Sakai

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wafer grinder and method of detecting grinding amount
    • Patent number 6,402,589
    • Issue date Jun 11, 2002
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Wafer polishing apparatus
    • Patent number 6,354,914
    • Issue date Mar 12, 2002
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Wafer polishing machine
    • Patent number 6,346,037
    • Issue date Feb 12, 2002
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Wafer polishing apparatus
    • Patent number 6,302,762
    • Issue date Oct 16, 2001
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Polishing apparatus
    • Patent number 6,203,414
    • Issue date Mar 20, 2001
    • Tokyo Seimitsu Co., Ltd.
    • Minoru Numoto
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Wafer polishing apparatus
    • Patent number 6,059,636
    • Issue date May 9, 2000
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Wafer polishing apparatus
    • Patent number 6,027,398
    • Issue date Feb 22, 2000
    • Tokyo Seimitsu Co., Ltd.
    • Minoru Numoto
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Wafer polishing machine
    • Patent number 5,931,725
    • Issue date Aug 3, 1999
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Semiconductor wafer polishing machine
    • Patent number 5,876,272
    • Issue date Mar 2, 1999
    • Tokyo Seimitsu Co., Ltd.
    • Takao Inaba
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Cap for writing equipment
    • Patent number 4,844,642
    • Issue date Jul 4, 1989
    • Pilot Ink Co., Ltd.
    • Takao Inaba
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Writing instrument with movable closure
    • Patent number 4,533,272
    • Issue date Aug 6, 1985
    • Pilot Ink Company
    • Kenji Sakai
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES