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Tomohiro Oikawa

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Scanning optical apparatus
    • Patent number 5,054,866
    • Issue date Oct 8, 1991
    • Ricoh Company, Ltd.
    • Kan Tomita
    • G02 - OPTICS
  • Information Patent Grant

    Polygonal mirror for scanning light beam
    • Patent number 5,024,496
    • Issue date Jun 18, 1991
    • Ricoh Company, Ltd.
    • Tomohiro Oikawa
    • G02 - OPTICS
  • Information Patent Grant

    Copying method for bookbinding
    • Patent number 4,640,611
    • Issue date Feb 3, 1987
    • Ricoh Company, Ltd.
    • Eishu Ohdake
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Copier with bookbinding function
    • Patent number 4,592,651
    • Issue date Jun 3, 1986
    • Ricoh Company, Ltd.
    • Tomohiro Oikawa
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER