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Hiroyuki Akamatsu

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  • Sagamihara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Eraser turn-on control for a copier
    • Patent number 4,978,996
    • Issue date Dec 18, 1990
    • Ricoh Company, Ltd.
    • Hiroyuki Akamatsu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Dry process developing apparatus
    • Patent number 4,592,653
    • Issue date Jun 3, 1986
    • Ricoh Company, Ltd.
    • Takashi Ikeda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY