TREA

Kenji Uematu

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Patents Grantslast 30 patents

  • Information Patent Grant

    Thermosensitive recording material
    • Patent number 5,137,864
    • Issue date Aug 11, 1992
    • Ricoh Company, Ltd.
    • Hiroshi Yaguchi
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Thermosensitive recording material
    • Patent number 4,916,111
    • Issue date Apr 10, 1990
    • Ricoh Company, Ltd.
    • Hiroshi Yaguchi
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS