TREA

Toshitaka Hirata

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of driving ink jet printing head
    • Patent number 5,359,350
    • Issue date Oct 25, 1994
    • Ricoh Company, Ltd.
    • Tomoaki Nakano
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ink jet head
    • Patent number 5,270,740
    • Issue date Dec 14, 1993
    • Ricoh Company, Ltd.
    • Osamu Naruse
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Method of driving ink jet type printing head
    • Patent number 5,266,965
    • Issue date Nov 30, 1993
    • Ricoh Company, Ltd.
    • Hiromichi Komai
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ink jet printer
    • Patent number 4,661,822
    • Issue date Apr 28, 1987
    • Ricoh Company, Ltd.
    • Tetsuro Hirota
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Ink jet printing apparatus
    • Patent number 4,437,101
    • Issue date Mar 13, 1984
    • Ricoh Company, Ltd.
    • Yutaka Ebi
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS