TREA

Kotaro Yonenaga

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Color image forming apparatus
    • Patent number 4,916,547
    • Issue date Apr 10, 1990
    • Ricoh Company, Ltd.
    • Akio Katsumata
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Paper feeder usable with a copier and others
    • Patent number 4,770,403
    • Issue date Sep 13, 1988
    • Ricoh Company, Ltd.
    • Akio Katsumata
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL