TREA

Yoichi Umezawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wire dot print head with print wires fixed to tip portions of armat...
    • Patent number 5,651,621
    • Issue date Jul 29, 1997
    • Oki Electric Industry Co., Ltd.
    • Hideaki Ishimizu
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Print gap setting in an impact printer
    • Patent number 5,474,391
    • Issue date Dec 12, 1995
    • Oki Electric Industry Co., Ltd.
    • Hirokazu Andou
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Self-adjusting controller for dot impact printer
    • Patent number 5,439,302
    • Issue date Aug 8, 1995
    • Oki Electric Industry Co., Ltd.
    • Hirokazu Andou
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Wire dot printing head
    • Patent number 5,290,113
    • Issue date Mar 1, 1994
    • Oki Electric Industry Co., Ltd.
    • Hirokazu Andoo
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Wire-dot print head
    • Patent number 5,137,380
    • Issue date Aug 11, 1992
    • Oki Electric Industry Co., Ltd.
    • Hirokazu Andou
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS